Renesas SH7781 - Manual (Page 1334)

26. Serial Sound Interface (SSI) Module
Rev.1.00 Jan. 10, 2008 Page 1304 of 1658
REJ09B0261-0100
Bit Bit Name
Initial
Value R/W Description
12 SWSP 0 R/W Serial WS Polarity
The function of this bit depends on whether the SSI
module is in non-compressed mode or compressed
mode.
CPEN = 0 (Non compressed mode):
0: SSI_WS is low for the first system word, high for the
second system word
1: SSI_WS is high for the first system word, low for the
second system word
CPEN = 1 (Compressed mode):
0: SSI_WS is active high flow control. WS = high means
data should be transferred, low means data should
not be transferred.
1: SSI_WS is active low flow control. WS = low means
data should be transferred, high means data should
not be transferred.
Note: Do not change this bit when EN is 1.
11 SPDP 0 R/W Serial Padding Polarity
This bit is ignored if CPEN = 1.
0: Padding bits are low
1: Padding bits are high
Note: The padding bits become low-level when the
MUEN bit is set to 1. (Mute function has the
higher priority)
10 SDTA 0 R/W Serial Data Alignment
This bit is ignored if CPEN = 1.
0: Serial data is transmitted/ received first, followed by
padding bits.
1: Padding bits are transmitted/ received first, followed
by serial data.