R01UH0823EJ0100 Rev.1.00
Page 1304 of 1823
Jul 31, 2019
RX23W Group
37. Serial Sound Interface (SSI)
37.2
Register Descriptions
37.2.1
Control Register (SSICR)
Address(es): SSI0.SSICR 0008 A500h
b31
b30
b29
b28
b27
b26
b25
b24
b23
b22
b21
b20
b19
b18
b17
b16
—
CKS
TUIEN TOIEN RUIEN ROIEN
IIEN
—
CHNL[1:0]
DWL[2:0]
SWL[2:0]
Value after reset:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
b15
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
SCKD SWSD SCKP SWSP SPDP
SDTA
PDTA
DEL
CKDV[3:0]
MUEN
—
TEN
REN
Value after reset:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b0
Receive Enable
0: Disables receive operation.
1: Enables receive operation.
R/W
b1
Transmit Enable
0: Disables transmit operation.
1: Enables transmit operation.
R/W
b2
—
Reserved
This bit is read as 0. The write value should be 0.
R/W
b3
Mute Enable*
0: Not muted.
1: Muted.
R/W
b7 to b4
Serial Bit Clock Frequency
Setting*
b7
b4
0 0 0 0: MCLK
0 0 0 1: MCLK/2
0 0 1 0: MCLK/4
0 0 1 1: MCLK/8
0 1 0 0: MCLK/16
0 1 0 1: MCLK/32
0 1 1 0: MCLK/64
0 1 1 1: MCLK/128
1 0 0 0: MCLK/6
1 0 0 1: MCLK/12
1 0 1 0: MCLK/24
1 0 1 1: MCLK/48
1 1 0 0: MCLK/96
Settings other than above are prohibited.
R/W
b8
Serial Data Delay*
0: I
2
S format compatibility
One clock cycle delay between SSIWS0 and SSITXD0/
SSIRXD0
1: MSB-first left-justified/right-justified format compatibility
No delay between SSIWS0 and SSITXD0/SSIRXD0
R/W
b9
Parallel Data Allocation*
When data word length is 8 or 16 bits:
0: The lower bits of parallel data (SSIFTDR, SSIFRDR) are
transferred prior to the upper bits.
1: The upper bits of parallel data (SSIFTDR, SSIFRDR) are
transferred prior to the lower bits.
When data word length is 18, 20, 22, or 24 bits:
0: Parallel data (SSIFTDR, SSIFRDR) is left-justified.
1: Parallel data (SSIFTDR, SSIFRDR) is right-justified.
R/W
b10
Serial Data Alignment*
0: Transmitting and receiving in the order of serial data and
padding bits
1: Transmitting and receiving in the order of padding bits and
serial data
R/W
b11
Serial Padding Polarity*
0: Padding data is 0.
1: Padding data is 1.
R/W