Rainbow-electronics ATAR862-8 User Manual download pdf (Page 62)

ATAR862-8

4589B–4BMCU–02/03

Timer 3 Registers

Timer 3 Mode Register (T3M) Address: "B"hex - Subaddress: "0"hex

Note: 1. In this mode, the SSI can be used only as demodulator (8-bit NRZ rising edge). All

other SSI modes are not allowed.

Bit 3Bit 2Bit 1Bit 0

T3M3 T3M2 T3M1 T3M0 Reset value: 1111b

T3M3 Timer 3 Mode select bit 3

T3M2 Timer 3 Mode select bit 2

T3M1 Timer 3 Mode select bit 1

T3M0 Timer 3 Mode select bit 0

Mode T3M3 T3M2 T3M1 T3M0 Timer 3 Modes

11111Timer/counter with a read access

21110Timer/counter, external capture and external

trigger restart mode (T3I)

31101Timer/counter, internal capture and internal

trigger restart mode (TOG2)

41100Timer/counter mode 1 without output (T2O ->

T3O)

51011Timer/counter mode 2 without output (T2O ->

T3O)

61010Burst modulation with Timer 2 (M2)

71001Burst modulation with shift register (SO)

81000FSK modulation with shift register (SO)

90111Pulse-width modulation with shift register (SO)

and Timer 2 (TOG2), internal trigger restart

(SCO) -> counter reset

100110Manchester demodulation/pulse-width

demodulation

(1)

(T2O -> T3O)

110101Biphase demodulation (T2O -> T3O)

120100Timer/counter with external capture mode (T3I)

130011Not allowed

140010Not allowed

150001Not allowed

160000Not allowed

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Rainbow-electronics ATAR862-8 User Manual Page 62