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Preliminary
S3C2451X RISC MICROPROCESSOR
IIS MULTI AUDIO INTERFACE
26-
19
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
IIS FIFO CONTROL REGISTER (IISFIC)
Register Address
Description
Reset
Value
IISFIC
0x55000008
IIS interface FIFO control register
0x0000_0000
IISFIC Bit
R/W
Description
[31:29]
R/W
Reserved. Program to zero.
FTX2CNT
[28:24]
R
TX FIFO2 data count. (0 ~ 16)
[23:21]
R/W
Reserved. Program to zero.
FTX1CNT
[20:16]
R
TX FIFO1 data count. (0~16)
TFLUSH
[15]
R/W
TX FIFO flush command.
0: No flush, 1: Flush
[14:13]
R/W
Reserved. Program to zero.
FTX0CNT
[12:8]
R
TX FIFO0 data count. (0~16)
RFLUSH
[7]
R/W
RX FIFO flush command.
0: No flush, 1: Flush
[6:5]
R/W
Reserved. Program to zero.
FRXCNT
[4:0]
R
RX FIFO data count. (0~16)
NOTES:
Tx FIFOs, Rx FIFO has 32-bit width and 16 depth structure, so FIFO data count value ranges from 0 to 16.
IIS PRESCALER CONTROL REGISTER (IISPSR)
Register Address
Description
Reset
Value
IISPSR
0x5500000C
IIS interface clock divider control register
0x0000_0000
IISPSR Bit
R/W
Description
[31:16]
R/W
Reserved. Program to zero.
PSRAEN
[15]
R/W
Pre-scaler (Clock divider) active.
1: Active (divide I2SAudioCLK with Pre-scaler division value)
0: Inactive (bypass I2SAudioCLK)
(Refer to
Figure 26-
2)
[14]
R/W
Reserved. Program to zero.
PSVALA
[13:8]
R/W
Pre-scaler (Clock divider) division value.
N: Division factor is N+1 (1~1/64)
[7:0]
R/W
Reserved. Program to zero.