T48C862-R4 datasheet(76/107 Pages) ATMEL

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T48C862-R4 [Preliminary]

4551C–4BMCU–01/04

Serial Interface Control

Auxiliary register address: "A"hex

Table 25.

Serial Mode Control Bits

Note:

SDD controls port directional control and defines the reset function for the SRDY-flag

Bit 3Bit 2Bit 1Bit 0

MSM

SM1

SM0

SDD

Reset value: 1111b

MSM

odular Stop Mode

MSM = 1, modulator stop mode disabled (output masking off)

MSM = 0, modulator stop mode enabled (output masking on) - used in

modulation modes for generating bit streams which are not sub-multiples of 8

bits.

SM1

erial Mode control bit 1

SM0

erial Mode control bit 0

Mode

SM1

SM0

SSI Mode

8-bit NRZ-Data changes with the rising edge of SC

8-bit NRZ-Data changes with the falling edge of SC

9-bit two-wire MCL mode

8-bit two-wire MCL mode (no acknowledge)

SDD

erial Data Direction

SDD = 1, transmit mode - SD line used as output (transmit data). SRDY is set

by a transmit buffer write access.

SDD = 0, receive mode

– SD line used as input (receive data). SRDY is set

by a receive buffer read access

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