DSP56853 Datasheet, PDF (579/662 Pages) Freescale Semiconductor, Inc – Digitial Signal Controller

Application:
ESSI
Date:
Programmer:
Sheet 10 of 16
ESSI Control Register 4 (SCR4) continued
Bits
3
2
1
0
Name
SCD1
SCD0
OF1
OF0
Description
Serial Control Direction 1
This bit controls the direction of the SC1 pin depending on the stat of the other controls
0 SC1 is an input
1 SC1 is an output
Serial Control Direction 0
This bit controls the direction of the SC0 pin depending on the state of other controls
0 SC0 is an input
1 SC0 is an output
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.
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.
Bits 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ESSI Control
Read
Register 4 (SCR4)
TXSFO TXSF1 TXSF2
SSC1 SCKD SCD2 SCD1 SCD0 OF1 OF0
Base + $7
Write
Reset 0 0 0 0 0 0
0 0 00000 0 00
C
B-77
denotes Reserved Bits
56F853/854/855/857/858 Digital Signal Controller User Manual, Rev. 4
Freescale Semiconductor
Preliminary