Rainbow-electronics DS26504 User Manual

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REV: 070105
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata
.
GENERAL DESCRIPTION
The DS26504 is a building-integrated timing-supply
(BITS) clock-recovery element. It also functions as a
basic T1/E1 transceiver. The receiver portion can
recover a clock from T1, E1, 64kHz composite clock
(64KCC), and 6312kHz synchronization timing
interfaces. In T1 and E1 modes, the Synchronization
Status Message (SSM) can also be recovered. The
transmit portion can directly interface to T1, E1, or
64KCC synchronization interfaces as well as source
the SSM in T1 and E1 modes. The DS26504 can
translate between any of the supported inbound
synchronization clock rates to any supported
outbound rate. The DS26504 can also accept an 8kHz
as well as a 19.44MHz reference clock. A separate
output is provided to source a 6312kHz clock. The
device is controlled through a parallel, serial, or
hardware controller port.
APPLICATIONS
BITS Timing
Rate Conversion
FEATURES
§ Accepts 8kHz and 19.44MHz References in
Addition to T1, E1, and 64kHz Composite Clock
§ GR378 Composite Clock Compliant
§ G.703 2048kHz Synchronization Interface
Compliant
§ G.703 64kHz Option A & B Centralized Clock
Synchronization Interface Compliant
§ G.703 64kHz Japanese Composite Clock
Synchronization Interface Compliant
§ G.703 6312kHz Japanese Synchronization
Interface Compliant
§ Interfaces to Standard T1/J1 (1.544MHz) and E1
(2.048MHz)
§ Interface to CMI-Coded T1/J1 and E1
§ T1/E1 Transmit Payload Clock Output
§ Short- and Long-Haul Line Interface
§ Transmit and Receive T1 BOC SSM Messages
with Receive Message Change of State and
Validation Indication
§ Transmit and Receive E1 Sa(n) Bit SSM
Messages with Receive Message Change of State
Indication
§ Crystal-Less Jitter Attenuator with Bypass Mode
for T1 and E1 Operation
§ Fully Independent Transmit and Receive
Functionality
§ Internal Software-Selectable Receive and
Transmit Side Termination for
75/100/110/120/133
§ Monitor Mode for Bridging Applications
§ Accepts 16.384MHz, 12.8MHz, 8.192MHz,
4.096MHz, 2.048MHz, or 1.544MHz Master
Clock
§ 64kHz, 8kHz, and 400Hz Outputs in Composite
Clock Mode
§ 8-Bit Parallel Control Port, Multiplexed or
Nonmultiplexed, Intel or Motorola
§ Serial (SPI) Control Port and Hardware Control
Mode
§ Provides LOS, AIS, and LOF Indications through
Hardware Output Pins
§ Fast Transmitter Output Disable through Device
Pin for Protection Switching
§ IEEE 1149.1 JTAG Boundary Scan
§ 3.3V Supply with 5V Tolerant Inputs and
Outputs
§ Pin and Software Compatible with the DS26502
and DS26503
ORDERING INFORMATION
PART TEMP RANGE PIN-PACKAGE
DS26504L 0°C to +70°C 64 LQFP
DS26504LN -40°C to +85°C 64 LQFP
DS26504
T1/E1/J1/64KCC BITS Element
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Summary of Contents

Page 1 - T1/E1/J1/64KCC BITS Element

1 of 128 REV: 070105 Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple

Page 2

DS26504 T1/E1/J1/64KCC BITS Element 10 of 128 Table 2-2. E1-Related Telecommunications Specifications ITUT G.703 Physical/Electrical Characteristics

Page 3

DS26504 T1/E1/J1/64KCC BITS Element 100 of 128 15.2 Transmit 64kHz Synchronization Interface Operation In the transmit path, the framer generateS t

Page 4

DS26504 T1/E1/J1/64KCC BITS Element 101 of 128 16. 6312kHz SYNCHRONIZATION INTERFACE The DS26504 has a 6312kHz Synchronization Interface mode of op

Page 5 - LIST OF FIGURES

DS26504 T1/E1/J1/64KCC BITS Element 102 of 128 17. JTAG BOUNDARY SCAN ARCHITECTURE AND TEST ACCESS PORT The DS26504 supports the standard IEEE 1149

Page 6 - LIST OF TABLES

DS26504 T1/E1/J1/64KCC BITS Element 103 of 128 TAP Controller State Machine The TAP controller is a finite state machine that responds to the logic

Page 7 - 1.2 Line Interface

DS26504 T1/E1/J1/64KCC BITS Element 104 of 128 Select-IR-Scan All test registers retain their previous state. The instruction register remains uncha

Page 8 - 1.6 Control Port

DS26504 T1/E1/J1/64KCC BITS Element 105 of 128 Figure 17-2. TAP Controller State Diagram 1001111111111110000010000

Page 9 - 2. SPECIFICATIONS COMPLIANCE

DS26504 T1/E1/J1/64KCC BITS Element 106 of 128 17.1 Instruction Register The instruction register contains a shift register as well as a latched par

Page 10 - 10 of 128

DS26504 T1/E1/J1/64KCC BITS Element 107 of 128 IDCODE When the IDCODE instruction is latched into the parallel instruction register, the identificat

Page 11 - Figure 3-1. Block Diagram

DS26504 T1/E1/J1/64KCC BITS Element 108 of 128 Table 17-4. Boundary Scan Control Bits CELL # NAME TYPE CONTROL CELL 0 AD1 Output3 1 1 AD1_7_CTRL C

Page 12 - 12 of 128

DS26504 T1/E1/J1/64KCC BITS Element 109 of 128 CELL # NAME TYPE CONTROL CELL 29 TNEGO observe_only 30 TCLKO observe_only 31 TCLK observe_only 3

Page 13 - RECEIVE LIU

DS26504 T1/E1/J1/64KCC BITS Element 11 of 128 3. BLOCK DIAGRAMS Figure 3-1. Block Diagram RX LIURX LIUT1/E1 SSM FRAMER64KCC DECODERCLOCK- DATATX L

Page 14 - 4.2 Transmit Side

DS26504 T1/E1/J1/64KCC BITS Element 110 of 128 18. FUNCTIONAL TIMING DIAGRAMS 18.1 Processor Interface 18.1.1 Parallel Port Mode See the AC Timing

Page 15 - 4.3 Receive Side

DS26504 T1/E1/J1/64KCC BITS Element 111 of 128 Figure 18-4. SPI Serial Port Access, Read Mode, CPOL = 1, CPHA = 1 Figure 18-5. SPI Seria

Page 16 - 4.4 Controller Interface

DS26504 T1/E1/J1/64KCC BITS Element 112 of 128 Figure 18-7. SPI Serial Port Access, Write Mode, CPOL = 0, CPHA = 1 Figure 18-8. SPI Ser

Page 17 - 17 of 128

DS26504 T1/E1/J1/64KCC BITS Element 113 of 128 19. OPERATING PARAMETERS ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground……………………

Page 18 - 18 of 128

DS26504 T1/E1/J1/64KCC BITS Element 114 of 128 Table 19-5. DC Characteristics (VDD = 3.3V ±5%, TA = 0°C to +70°C for DS26504L; VDD = 3.3V ±5%, TA =

Page 19 - 19 of 128

DS26504 T1/E1/J1/64KCC BITS Element 115 of 128 20. AC TIMING PARAMETERS AND DIAGRAMS Capacitive test loads are 40pF for bus signals and 20pF for al

Page 20 - 4.5 JTAG

DS26504 T1/E1/J1/64KCC BITS Element 116 of 128 Figure 20-1. Intel Bus Read Timing (BTS = 0 / BIS[1:0] = 00) Figure 20-2. Intel Bu

Page 21 - 4.7 Power

DS26504 T1/E1/J1/64KCC BITS Element 117 of 128 Figure 20-3. Motorola Bus Timing (BTS = 1 / BIS[1:0] = 00) t ASD ASHPW t t ASL AHLtCSt ASL ttt DSWDH

Page 22 - Table 5-1. LQFP Pinout

DS26504 T1/E1/J1/64KCC BITS Element 118 of 128 20.2 Nonmultiplexed Bus Table 20-2. AC Characteristics, Nonmultiplexed Parallel Port (VDD = 3.3V ±5%

Page 23 - INT INT JACKS

DS26504 T1/E1/J1/64KCC BITS Element 119 of 128 Figure 20-4. Intel Bus Read Timing (BTS = 0 / BIS[1:0] = 01) Figure 20-5. Intel Bus

Page 24 - WR (R/W) — TMODE3

DS26504 T1/E1/J1/64KCC BITS Element 12 of 128 Figure 3-2. Loopback Mux Diagram (T1/E1 Modes Only) Figure 3-3. Transmit PLL C

Page 25 - 6.2 Internal Termination

DS26504 T1/E1/J1/64KCC BITS Element 120 of 128 Figure 20-6. Motorola Bus Read Timing (BTS = 1 / BIS[1:0] = 01) Figure 20-7. Moto

Page 26 - Table 6-4. T1 Line Build-Out

DS26504 T1/E1/J1/64KCC BITS Element 121 of 128 20.3 Serial Bus Table 20-3. AC Characteristics, Serial Bus (VDD = 3.3V ±5%, TA = 0°C to +70°C for D

Page 27 - 6.4 Receiver Operating Modes

DS26504 T1/E1/J1/64KCC BITS Element 122 of 128 Figure 20-8. SPI Interface Timing Diagram, CPHA = 0, BIS[1:0] = 10 Figure 20-9.

Page 28 - 6.7 Payload Clock Output

DS26504 T1/E1/J1/64KCC BITS Element 123 of 128 20.4 Receive Side AC Characteristics Table 20-4. Receive Side AC Characteristics (VDD = 3.3V ±5%, T

Page 29 - 29 of 128

DS26504 T1/E1/J1/64KCC BITS Element 124 of 128 Figure 20-10. Receive Timing—T1, E1, 64KCC Mode tD1tD2RSERRS_8K1RCLKE1 = MSB of Channel 1T1 = F-BittD

Page 30 - Table 7-1. Port Mode Select

DS26504 T1/E1/J1/64KCC BITS Element 125 of 128 20.5 Transmit Side AC Characteristics Table 20-5. Transmit Side AC Characteristics (VDD = 3.3V ±5%,

Page 31 - 31 of 128

DS26504 T1/E1/J1/64KCC BITS Element 126 of 128 Figure 20-11. Transmit Timing—T1, E1, 64KCC Mode TSERTS_8K_41tD2tHDtSUTS_8K_42tSUtFtRTCLKttCLtCHCPT

Page 32 - 7.3 Register Map

DS26504 T1/E1/J1/64KCC BITS Element 127 of 128 21. REVISION HISTORY REVISION DESCRIPTION 070105 New product release.

Page 33 - 33 of 128

DS26504 T1/E1/J1/64KCC BITS Element 128 of 128 Maxim/Dallas Semiconductor cannot assume responsibility for use of any circuitry other than circuitry

Page 34

DS26504 T1/E1/J1/64KCC BITS Element 13 of 128 Figure 3-4. Master Clock PLL Diagram PRE-SCALERDIVIDE BY 1, 2, 4,OR 8MCLK PIN2.048MHz to1.544MHz PLL

Page 35

DS26504 T1/E1/J1/64KCC BITS Element 14 of 128 4. PIN FUNCTION DESCRIPTION 4.1 Transmit PLL NAME TYPE FUNCTION PLL_OUT O Transmit PLL Output. This

Page 36

DS26504 T1/E1/J1/64KCC BITS Element 15 of 128 4.3 Receive Side NAME TYPE FUNCTION RCLK O Receive Clock. Recovered 1.544MHz (T1), 2.048MHz (E1), 631

Page 37 - 7.5 Status Registers

DS26504 T1/E1/J1/64KCC BITS Element 16 of 128 NAME TYPE FUNCTION RAIS O Receive Alarm Indication Signal T1 Mode: Toggles high when the receive Blue

Page 38 - 7.6 Information Registers

DS26504 T1/E1/J1/64KCC BITS Element 17 of 128 NAME TYPE FUNCTION AD[6]/ TITD I/O Data Bus D[6] or Address/Data Bus AD[6]/Transmit Internal Terminat

Page 39 - 8.1 T1 Control Registers

DS26504 T1/E1/J1/64KCC BITS Element 18 of 128 NAME TYPE FUNCTION AD[1]/ RMODE3/MOSI I/O Data Bus D[1] or Address/Data Bus AD[1]/Receive Mode Select

Page 40

DS26504 T1/E1/J1/64KCC BITS Element 19 of 128 NAME TYPE FUNCTION A4/CPHA/ L2 I Address Bus Bit A[4]/Serial Port Clock Phase Select/Line Build-Out

Page 41

DS26502 T1/E1/J1/64KCC BITS Element 2 of 128 TABLE OF CONTENTS 1. FEATURES ...

Page 42

DS26504 T1/E1/J1/64KCC BITS Element 20 of 128 NAME TYPE FUNCTION RD(DS)/ RMODE2 I Active-Low Read Input-Data Strobe/Receive Mode Select Bit 2 RD (D

Page 43

DS26504 T1/E1/J1/64KCC BITS Element 21 of 128 4.6 Line Interface NAME TYPE FUNCTION MCLK I Master Clock Input. A (50ppm) clock source. This clock i

Page 44 - (T1RCR2.0 = 0)

DS26504 T1/E1/J1/64KCC BITS Element 22 of 128 5. PINOUT Table 5-1. LQFP Pinout MODE PIN TYPE PARALLEL PORT SERIAL PORT HARDWARE FUNCTION 1 I/O AD

Page 45 - 9.1 E1 Control Registers

DS26504 T1/E1/J1/64KCC BITS Element 23 of 128 MODE PIN TYPE PARALLEL PORT SERIAL PORT HARDWARE FUNCTION 18 O TCLKO TCLKO TCLKO Transmit Clock Outpu

Page 46

DS26504 T1/E1/J1/64KCC BITS Element 24 of 128 MODE PIN TYPE PARALLEL PORT SERIAL PORT HARDWARE FUNCTION 59 I BIS1 BIS1 BIS1 Bus Interface Sele

Page 47

DS26504 T1/E1/J1/64KCC BITS Element 25 of 128 6. HARDWARE CONTROLLER INTERFACE In Hardware Controller mode, the parallel and serial port pins are

Page 48

DS26504 T1/E1/J1/64KCC BITS Element 26 of 128 6.3 Line Build-Out Table 6-3. E1 Line Build-Out L2 PIN 13 L1 PIN 12 L0 PIN 11 APPLICATION N (Note 1)

Page 49

DS26504 T1/E1/J1/64KCC BITS Element 27 of 128 6.4 Receiver Operating Modes Table 6-5. Receive Path Operating Mode RMODE3 PIN 64 RMODE2 PIN 61 RMODE1

Page 50

DS26504 T1/E1/J1/64KCC BITS Element 28 of 128 6.6 MCLK Pre-Scaler Table 6-7. MCLK Pre-Scaler for T1 Mode MPS1 PIN 16 MPS0 PIN 15 JACKS PIN 46 MCLK (

Page 51

DS26504 T1/E1/J1/64KCC BITS Element 29 of 128 6.8 Other Hardware Controller Mode Features Table 6-9. Other Operational Modes PIN DESCRIPTION RSM

Page 52 - CSM_TSDW

DS26504 T1/E1/J1/64KCC BITS Element 3 of 128 8. T1 FRAMER/FORMATTER CONTROL REGISTERS... 39 8.1 T1 CONTROL R

Page 53

DS26504 T1/E1/J1/64KCC BITS Element 30 of 128 7. PROCESSOR INTERFACE The DS26504 is controlled via a nonmultiplexed (BIS[1:0] = 01) or a multiplexed

Page 54 - TS_8K_4INV — — TPCOE RPCOE

DS26504 T1/E1/J1/64KCC BITS Element 31 of 128 are terminated when CS is removed. If CS is removed before all 8 bits of the data are read, the remain

Page 55 - 11.2 Transmit BOC

DS26504 T1/E1/J1/64KCC BITS Element 32 of 128 7.3 Register Map Table 7-2. Register Map Sorted By Address ADDRESS TYPE REGISTER NAME REGISTER ABBREV

Page 56 - 11.3 Receive BOC

DS26504 T1/E1/J1/64KCC BITS Element 33 of 128 ADDRESS TYPE REGISTER NAME REGISTER ABBREVIATION 42 R/W Transmit Si Align Frame TSiAF 43 R/W Tra

Page 57

DS26504 T1/E1/J1/64KCC BITS Element 34 of 128 7.3.1 Power-Up Sequence The DS26504 contains an on-chip power-up reset function that automatically cl

Page 58

DS26504 T1/E1/J1/64KCC BITS Element 35 of 128 7.3.3 Mode Configuration Register Register Name: MCREG Register Description: Mode Configuration Regi

Page 59

DS26504 T1/E1/J1/64KCC BITS Element 36 of 128 Register Name: TPCR1 Register Description: Transmit PLL Control Register 1 Register Address: 09h Bit

Page 60

DS26504 T1/E1/J1/64KCC BITS Element 37 of 128 Register Name: TPCR2 Register Description: Transmit PLL Control Register 2 Register Address: 0Ah Bit

Page 61

DS26504 T1/E1/J1/64KCC BITS Element 38 of 128 individually poll certain bits without disturbing the other bits in the register. This operation is ke

Page 62

DS26504 T1/E1/J1/64KCC BITS Element 39 of 128 8. T1 FRAMER/FORMATTER CONTROL REGISTERS The T1 framer portion of the DS26504 is configured via a set

Page 63

DS26504 T1/E1/J1/64KCC BITS Element 4 of 128 17.5 IDENTIFICATION REGISTER ...

Page 64 - Table 12-1. E1 SSM Messages

DS26504 T1/E1/J1/64KCC BITS Element 40 of 128 Register Name: T1RCR2 Register Description: T1 Receive Control Register 2 Register Address: 04h Bit

Page 65

DS26504 T1/E1/J1/64KCC BITS Element 41 of 128 Register Name: T1TCR1 Register Description: T1 Transmit Control Register 1 Register Address: 05h Bit

Page 66

DS26504 T1/E1/J1/64KCC BITS Element 42 of 128 Register Name: T1TCR2 Register Description: T1 Transmit Control Register 2 Register Address: 06h Bit

Page 67

DS26504 T1/E1/J1/64KCC BITS Element 43 of 128 Register Name: T1CCR Register Description: T1 Common Control Register Register Address: 07h Bit # 7

Page 68

DS26504 T1/E1/J1/64KCC BITS Element 44 of 128 Table 8-1. T1 Alarm Criterion ALARM SET CRITERION CLEAR CRITERION Blue Alarm (AIS) (Note 1) Over a 3

Page 69

DS26504 T1/E1/J1/64KCC BITS Element 45 of 128 9. E1 FRAMER/FORMATTER CONTROL REGISTERS The E1 framer portion of the DS26504 is configured via a set

Page 70

DS26504 T1/E1/J1/64KCC BITS Element 46 of 128 Table 9-1. E1 Sync/Resync Criterion FRAME OR MULTIFRAME LEVEL SYNC CRITERION RESYNC CRITERION ITU S

Page 71

DS26504 T1/E1/J1/64KCC BITS Element 47 of 128 Register Name: E1TCR Register Description: E1 Transmit Control Register Register Address: 1Eh Bit #

Page 72

DS26504 T1/E1/J1/64KCC BITS Element 48 of 128 9.2 E1 Information Registers Register Name: INFO2 Register Description: Information Register 2 Regis

Page 73

DS26504 T1/E1/J1/64KCC BITS Element 49 of 128 Table 9-2. E1 Alarm Criterion ALARM SET CRITERION CLEAR CRITERION ITU SPEC. RLOF An RLOF condition e

Page 74

DS26504 T1/E1/J1/64KCC BITS Element 5 of 128 LIST OF FIGURES Figure 3-1. Block Diagram ...

Page 75

DS26504 T1/E1/J1/64KCC BITS Element 50 of 128 Register Name: SR2 Register Description: Status Register 2 Register Address: 16h Bit # 7 6 5 4 3 2

Page 76

DS26504 T1/E1/J1/64KCC BITS Element 51 of 128 Register Name: IMR2 Register Description: Interrupt Mask Register 2 Register Address: 17h Bit # 7 6

Page 77

DS26504 T1/E1/J1/64KCC BITS Element 52 of 128 10. I/O PIN CONFIGURATION OPTIONS Register Name: IOCR1 Register Description: I/O Configuration Regis

Page 78

DS26504 T1/E1/J1/64KCC BITS Element 53 of 128 Table 10-1. TS_8K_4 Pin Functions TRANSMIT MODE IOCR1.3 IOCR1.2 IOCR1.1 TS_8K_4 FUNCTION T1/E1 0 0

Page 79

DS26504 T1/E1/J1/64KCC BITS Element 54 of 128 Register Name: IOCR2 Register Description: I/O Configuration Register 2 Register Address: 02h Bit #

Page 80 - 13.2 LIU Receiver

DS26502 T1/E1/J1/64KCC BITS Element 55 of 128 11. T1 SYNCHRONIZATION STATUS MESSAGE The DS26504 has a BOC controller to handle SSM services in T1 m

Page 81 - 13.3 LIU Transmitter

DS26504 T1/E1/J1/64KCC BITS Element 56 of 128 11.3 Receive BOC The receive BOC function is enabled by setting BOCC.4 = 1. The RFDL register will now

Page 82 - 13.5 Jitter Attenuator

DS26504 T1/E1/J1/64KCC BITS Element 57 of 128 Register Name: BOCC Register Description: BOC Control Register Register Address: 1Fh Bit # 7 6 5 4

Page 83 - Figure 13-3. CMI Coding

DS26504 T1/E1/J1/64KCC BITS Element 58 of 128 Register Name: RFDL (RFDL register bit usage when BOCC.4 = 1) Register Description: Receive FDL Regi

Page 84 - 13.7 LIU Control Registers

DS26504 T1/E1/J1/64KCC BITS Element 59 of 128 Register Name: SR3 Register Description: Status Register 3 Register Address: 18h Bit # 7 6 5 4 3

Page 85 - N.M. = Not meaningful

DS26504 T1/E1/J1/64KCC BITS Element 6 of 128 LIST OF TABLES Table 2-1. T1-Related Telecommunications Specifications ...

Page 86

DS26504 T1/E1/J1/64KCC BITS Element 60 of 128 Register Name: IMR3 Register Description: Interrupt Mask Register 3 Register Address: 19h Bit # 7 6

Page 87

DS26504 T1/E1/J1/64KCC BITS Element 61 of 128 Register Name: SR4 Register Description: Status Register 4 Register Address: 1Ah Bit # 7 6 5 4 3 2

Page 88

DS26504 T1/E1/J1/64KCC BITS Element 62 of 128 Register Name: IMR4 Register Description: Interrupt Mask Register 4 Register Address: 1Bh Bit # 7 6

Page 89

DS26504 T1/E1/J1/64KCC BITS Element 63 of 128 Register Name: TFDL Register Description: Transmit FDL Register Register Address: 51h Bit # 7 6 5 4

Page 90

DS26504 T1/E1/J1/64KCC BITS Element 64 of 128 12. E1 SYNCHRONIZATION STATUS MESSAGE The DS26504 provides access to both the transmit and receive S

Page 91

DS26504 T1/E1/J1/64KCC BITS Element 65 of 128 12.1.1 Sa Bit Change of State The DS26504 can provide an interrupt whenever one of the multiframe bas

Page 92 - Figure 13-4. Basic Interface

DS26504 T1/E1/J1/64KCC BITS Element 66 of 128 Register Name: IMR5 Register Description: Interrupt Mask Register 5 Register Address: 22h Bit # 7 6

Page 93 - RECEIVE

DS26504 T1/E1/J1/64KCC BITS Element 67 of 128 Register Name: RSiAF Register Description: Receive Si Bits of the Align Frame Register Address: 58h

Page 94 - 94 of 128

DS26504 T1/E1/J1/64KCC BITS Element 68 of 128 Register Name: RRA Register Description: Receive Remote Alarm Register Address: 5Ah Bit # 7 6 5 4 3

Page 95 - 95 of 128

DS26504 T1/E1/J1/64KCC BITS Element 69 of 128 Register Name: RSa5 Register Description: Receive Sa5 Bits Register Address: 5Ch Bit # 7 6 5 4 3 2

Page 96 - 96 of 128

DS26504 T1/E1/J1/64KCC BITS Element 7 of 128 1. FEATURES 1.1 General § 64-pin, 10mm x 10mm LQFP package § 3.3V supply with 5V tolerant inputs and

Page 97 - JITTER ATTENUATION (dB)

DS26504 T1/E1/J1/64KCC BITS Element 70 of 128 Register Name: RSa7 Register Description: Receive Sa7 Bits Register Address: 5Eh Bit # 7 6 5 4 3 2

Page 98 - 14. LOOPBACK CONFIGURATION

DS26504 T1/E1/J1/64KCC BITS Element 71 of 128 Register Name: TSiAF Register Description: Transmit Si Bits of the Align Frame Register Address: 42h

Page 99 - 99 of 128

DS26504 T1/E1/J1/64KCC BITS Element 72 of 128 Register Name: TRA Register Description: Transmit Remote Alarm Register Address: 44h Bit # 7 6 5 4

Page 100 - 100 of 128

DS26504 T1/E1/J1/64KCC BITS Element 73 of 128 Register Name: TSa5 Register Description: Transmit Sa5 Bits Register Address: 46h Bit # 7 6 5 4 3 2

Page 101 - 101 of 128

DS26504 T1/E1/J1/64KCC BITS Element 74 of 128 Register Name: TSa7 Register Description: Transmit Sa7 Bits Register Address: 48h Bit # 7 6 5 4 3 2

Page 102

DS26504 T1/E1/J1/64KCC BITS Element 75 of 128 Register Name: TSACR Register Description: Transmit Sa Bit Control Register Register Address: 4Ah Bi

Page 103 - 103 of 128

DS26504 T1/E1/J1/64KCC BITS Element 76 of 128 12.2 Alternate Sa/Si Bit Access Based on Double-Frame On the receive side, the RAF and RNAF registers

Page 104 - 104 of 128

DS26504 T1/E1/J1/64KCC BITS Element 77 of 128 Register Name: RNAF Register Description: Receive Non-Align Frame Register Register Address: 57h Bit

Page 105 - 105 of 128

DS26504 T1/E1/J1/64KCC BITS Element 78 of 128 Register Name: TNAF Register Description: Transmit Non-Align Frame Register Register Address: 41h Bi

Page 106 - 17.1 Instruction Register

DS26504 T1/E1/J1/64KCC BITS Element 79 of 128 13. LINE INTERFACE UNIT (LIU) The LIU in the DS26504 contains three sections: the receiver, which han

Page 107 - 107 of 128

DS26504 T1/E1/J1/64KCC BITS Element 8 of 128 1.4 Framer/Formatter § Fully independent transmit and receive functionality § Full receive and transm

Page 108 - 108 of 128

DS26504 T1/E1/J1/64KCC BITS Element 80 of 128 13.1 LIU Operation The LIU interfaces the T1, E1, 64KCC, and 6312kHz signals to the various types of n

Page 109 - 109 of 128

DS26504 T1/E1/J1/64KCC BITS Element 81 of 128 13.2.2 Receive G.703 Section 10 Synchronization Signal The DS26504 can receive a 2.048MHz square-wave

Page 110 - 110 of 128

DS26504 T1/E1/J1/64KCC BITS Element 82 of 128 The transmit line drive has two modes of operation: fixed gain or automatic gain. In the fixed gain m

Page 111

DS26504 T1/E1/J1/64KCC BITS Element 83 of 128 DS26504 will divide the internal nominal 32.768MHz (E1) or 24.704MHz (T1) clock by either 15 or 17 ins

Page 112 - 112 of 128

DS26504 T1/E1/J1/64KCC BITS Element 84 of 128 13.7 LIU Control Registers Register Name: LIC1 Register Description: Line Interface Control 1 Regist

Page 113 - ABSOLUTE MAXIMUM RATINGS

DS26504 T1/E1/J1/64KCC BITS Element 85 of 128 T1 Mode L2 L1 L0 APPLICATION N (Note 1) RETURN LOSS Rt (Note 1) 0 0 0 DSX-1 (0 to 133 feet)/0

Page 114 - 114 of 128

DS26504 T1/E1/J1/64KCC BITS Element 86 of 128 Register Name: LIC2 Register Description: Line Interface Control 2 Register Address: 31h Bit # 7 6

Page 115 - 20.1 Multiplexed Bus

DS26504 T1/E1/J1/64KCC BITS Element 87 of 128 Register Name: LIC3 Register Description: Line Interface Control 3 Register Address: 32h Bit # 7 6 5

Page 116 - 116 of 128

DS26504 T1/E1/J1/64KCC BITS Element 88 of 128 Register Name: LIC4 Register Description: Line Interface Control 4 Register Address: 33h Bit # 7 6

Page 117 - 117 of 128

DS26504 T1/E1/J1/64KCC BITS Element 89 of 128 Bits 6 and 7: MCLK Prescaler (MPS0 and MPS1) (E1 Mode) MCLK (MHz) MPS1 MPS0 JACKS0 (LIC2.3) JACKS1 (LI

Page 118 - 20.2 Nonmultiplexed Bus

DS26504 T1/E1/J1/64KCC BITS Element 9 of 128 2. SPECIFICATIONS COMPLIANCE The DS26504 meets all applicable sections of the latest telecommunications

Page 119

DS26504 T1/E1/J1/64KCC BITS Element 90 of 128 Register Name: SR1 Register Description: Status Register 1 Register Address: 14h Bit # 7 6 5 4 3 2

Page 120

DS26504 T1/E1/J1/64KCC BITS Element 91 of 128 Register Name: IMR1 Register Description: Interrupt Mask Register 1 Register Address: 15h Bit # 7 6

Page 121 - 20.3 Serial Bus

DS26504 T1/E1/J1/64KCC BITS Element 92 of 128 13.8 Recommended Circuits Figure 13-4. Basic Interface TTIPTRINGRTIPRRINGDVDD

Page 122 - 122 of 128

DS26504 T1/E1/J1/64KCC BITS Element 93 of 128 Figure 13-5. Protected Interface Using Internal Receive Termination TTIPTRINGRTIPRRINGDV

Page 123 - 123 of 128

DS26504 T1/E1/J1/64KCC BITS Element 94 of 128 13.9 Component Specifications Table 13-1. Transformer Specifications SPECIFICATION RECOMMENDED VALUE

Page 124 - 124 of 128

DS26504 T1/E1/J1/64KCC BITS Element 95 of 128 Figure 13-6. E1 Transmit Pulse Template Figure 13-7. T1 Transmit Pulse Template

Page 125 - 125 of 128

DS26504 T1/E1/J1/64KCC BITS Element 96 of 128 Figure 13-8. Jitter Tolerance (T1 Mode) Figure 13-9. Jitter Tolerance (E1 Mode)

Page 126 - 126 of 128

DS26504 T1/E1/J1/64KCC BITS Element 97 of 128 Figure 13-10. Jitter Attenuation (T1 Mode) Figure 13-11. Jitter Attenuation (E

Page 127 - 21. REVISION HISTORY

DS26504 T1/E1/J1/64KCC BITS Element 98 of 128 14. LOOPBACK CONFIGURATION Register Name: LBCR Register Description: Loopback Control Register Regis

Page 128 - 22. PACKAGE INFORMATION

DS26504 T1/E1/J1/64KCC BITS Element 99 of 128 15. 64kHz SYNCHRONIZATION INTERFACE The 64kHz synchronization interface conforms to Appendix II of G.

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