ATAM894 datasheet(69/97 Pages) ATMEL

69 / 97 page

4679D–4BMCU–05/05

ATAM894

6.3.4.13

Serial Interface Control Register 2 (SIC2)

Note:

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

Auxiliary register address: 'A'hex

Bit 3

Bit 2

Bit 1

Bit 0

SIC2

MSM

SM1

SM0

SDD

Reset value: 1111b

MSM

Modular 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 bit.

SM1

Serial Mode control bit 1

SM0

Serial Mode control bit 0

Table 6-17.

Serial Mode Control Bits

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 pseudo MCL mode (no acknowledge)

SDD

Serial 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

ATAM894 Datasheet(PDF) 69 Page - ATMEL Corporation

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