CE2746 查看數據表（PDF） - Unspecified
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CE2746 Datasheet PDF : 18 Pages
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CONTROL REGISTERS DESCRIPTION
CE2746
Control Register 0(ADRS=hex00, default=hex81)
ADDR[3:0]
Hex 00
Default Value
R/W
BIT 7
LF
1
R/W
BIT 6
I2S
0
R/W
CREG0[7:0]
BIT 5
BIT 4
FMT[1:0]
0
0
R/W
R/W
BIT 3
AMUTE
0
R/W
BIT 2
DEEMP
0
R/W
BIT 1
BIT 0
FSMPL[1:0]
0
1
R/W
R/W
[LF, I2S] Digital Serial Bus Format Select
00: - Normal or Right Justified Format.
01: - I2S Format.
10: - Left Justified Format. (default)
11: - Not allowed.
FMT[1:0]: - These two bits define the serial audio input resolution
00: - 24-bit resolution. (default)
01: - 20-bit resolution.
10: - 18-bit resolution.
11: - 16-bit resolution.
AMUTE: - Auto-mute detection enable.
0: - Auto-mute enabled. (default)
1: - No auto-mute.
DEEMP: - Enable de-emphasis (active only when FSMPL is 2’b00).
0: - Normal. (default)
1: - enable de-emphasis when FSMPL is 0.
FSMPL: - Sampling rate:
00: - 44.1 K sampling.
01: - 48K sampling. (default)
10: - 96K sampling.
11: - 192K sampling.
Control Register 1 (ADRS=hex01, default=hex80)
ADDR[3:0]
Hex 01
Default Value
R/W
BIT 7
AUTODET
1
R/W
BIT 6
FS384
0
R/W
CREG1[7:0]
BIT 5
CKDIV4
0
R/W
BIT 4
CKDIV2
0
R/W
BIT 3
spare
0
R/W
BIT 2
MUTE56
0
R/W
BIT 1
MUTE34
0
R/W
BIT 0
MUTE12
0
R/W
10-18
March 24, 2004
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