DSP56857 datasheet(579/662 Pages) FREESCALE

579 / 662 page

Application:

Date:

Programmer:

Sheet

56F853/854/855/857/858 Digital Signal Controller User Manual, Rev. 4

B-77

Freescale Semiconductor

Preliminary

10 of 16

ESSI Control Register 4 (SCR4) continued

denotes Reserved Bits

Bits

Name

Description

SCD1

Serial Control Direction 1

This bit controls the direction of the SC1 pin depending on the stat of the other controls

SC1 is an input

SC1 is an output

SCD0

Serial Control Direction 0

This bit controls the direction of the SC0 pin depending on the state of other controls

SC0 is an input

SC0 is an output

OF1

Serial Output Flag 1

When SC1 is configured for Output Flag functionality the control bit determines the state of the

output pin. Changes in the OF1 bit will appear on the SC1 pin at the beginning of the next frame

in the Normal mode, or at the beginning of the next time slot in the Network mode.

OF0

Serial Output Flag 0

When SC0 is configured for Output Flag functionality, the control bit determines the state of the

output pin. Changes in the OF0 bit will appear on the SC0 pin at the beginning of the next frame

in the Normal mode, or at the beginning of the next time slot in the Network mode.

ESSI Control

Base + $7

Bits

Read

TXSFO TXSF1 TXSF2

SSC1 SCKD SCD2 SCD1 SCD0 OF1

OF0

Write

Reset

000

ESSI

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