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參數資料
| 型號： | TLV320AIC14I |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO30 |
| 封裝： | PLASTIC, TSSOP-30 |
| 文件頁數： | 25/54頁 |
| 文件大小： | 450K |
| 代理商： | TLV320AIC14I |
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4–2
4.2
Control Register 2
D7
D6
D5
D4
D3
D2
D1
D0
TURBO
DIFBP
I2C6
I2C5
I2C4
GPO
HPC
R/W
NOTE: R = Read, W = Write
Table 4–2. Control Register 2 Bit Summary
BIT
NAME
RESET
VALUE
FUNCTION
D7
TURBO
0
Turbo mode. This bit is used to set the SCLK rate.
TURBO = 0 SCLK = (16
× FS × #Device × mode)
TURBO = 1 SCLK = MCLK/P (P is determined in register 4)
D6
DIFBP
0
Decimation/interpolation filter bypass. This bit is used to bypass both decimation and interpolation filters.
DIFBP = 0
Decimation/interpolation filters are operated.
DIFBP = 1
Decimation/interpolation filters are bypassed.
D5–D3
I2Cx
100
I2C device address. These three bits are programmable to define three MSBs of the I2C device address (reset
value is 100). These three bits are combined with the 4-bit SMARTDM device address to form 7-bit I2C device
address.
D2
GPO
0
General-purpose output
D1–D0
HPC
00
Host port control bits.
Write the following values into D1–D0 to select the appropriate configuration for two pins SDA and SCL. SDA pin
is set to be equal to D2 if D1–D0 = 10.
D1–D0
0
SDA and SCL pins are used for I2C interface
1
SDA and SCL pins are used for S2C interface
0
SDA pin = D2, input going into SCL pin is output to DOUT
1
SDA pin = Control frame flag.
4.3
Control Register 3
D7
D6
D5
D4
D3
D2
D1
D0
PWDN
SWRS
OSR-option
ASRF
R/W
NOTE: R = Read, W = Write
Table 4–3. Control Register 3 Bit Summary
BIT
NAME
RESET
VALUE
FUNCTION
D7–D6
PWDN
00
Power down
PWDN = 00 No power down
PWDN = 01 Power-down A/D
PWDN = 10 Power-down D/A
PWDN = 11 Software power down the entire device
D5
SWRS
0
Software reset. Set this bit to 1 to reset the device.
D4-D3
OSR op-
tion
00
OSR option.
D4–D3=X1 OSR for DAC Channel is 512( Max Fs=8Ksps)
D4–D3=10 OSR for DAC Channel is 256( Max Fs=16Ksps)
D4–D3=00 OSR for DAC Channel is 128(Max Fs=26Ksps)
D2-D0
ASRF
001
Asynchronous sampling rate factor. These three bits define the ratio n between FS frequency and the
desired sampling frequency fs (Applied only if different sampling rate between CODEC1 and CODEC2 is
desired)
ASRF = 001 n = FS/fs = 1
ASRF = 010 n = FS/fs = 2
ASRF = 011 n = FS/fs = 3
ASRF = 100 n = FS/fs = 4
ASRF = 101 n = FS/fs = 5
ASRF = 110 n = FS/fs = 6
ASRF = 111 n = FS/fs = 7
ASRF = 000 n = FS/fs = 8
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