參數(shù)資料
型號： CDB42428
廠商： Cirrus Logic, Inc.
元件分類： Codec
英文描述： 114 dB, 192kHz 8-Ch CODEC WITH PLL
中文描述： 114分貝，192kHz的8通道編解碼器與鎖相環(huán)
文件頁數(shù)： 26/67頁
文件大小： 1433K
代理商： CDB42428
CS42428
26
3.6
The control port is used to access the registers, allowing the CS42428 to be configured for the desired op-
erational modes and formats. The operation of the control port may be completely asynchronous with re-
spect to the audio sample rates. However, to avoid potential interference problems, the control port pins
should remain static if no operation is required.
The control port has 2 modes: SPI and I
2
C, with the CS42428 acting as a slave device. SPI mode is selected
if there is a high to low transition on the AD0/CS pin, after the RST pin has been brought high. I
2
C mode
is selected by connecting the AD0/CS pin through a resistor to VLC or DGND, thereby permanently se-
lecting the desired AD0 bit address state.
Control Port Description and Timing
3.6.1
SPI Mode
In SPI mode, CS is the CS42428 chip select signal, CCLK is the control port bit clock (input into the
CS42428 from the microcontroller), CDIN is the input data line from the microcontroller, CDOUT is the
output data line to the microcontroller. Data is clocked in on the rising edge of CCLK and out on the falling
edge.
Figure 17 shows the operation of the control port in SPI mode. To write to a register, bring CS low. The
first seven bits on CDIN form the chip address and must be 1001111. The eighth bit is a read/write indi-
cator (R/W), which should be low to write. The next eight bits form the Memory Address Pointer (MAP),
which is set to the address of the register that is to be updated. The next eight bits are the data which will
be placed into the register designated by the MAP. During writes, the CDOUT output stays in the Hi-Z
state. It may be externally pulled high or low with a 47 k
resistor, if desired.
There is a MAP auto increment capability, enabled by the INCR bit in the MAP register. If INCR is a zero,
the MAP will stay constant for successive read or writes. If INCR is set to a 1, the MAP will autoincrement
after each byte is read or written, allowing block reads or writes of successive registers.
To read a register, the MAP has to be set to the correct address by executing a partial write cycle which
finishes (CS high) immediately after the MAP byte. The MAP auto increment bit (INCR) may be set or
M AP
MSB
LSB
DATA
byte 1
byte n
R/W
R/W
AD D R ESS
CH IP
ADDRESS
1001111
C H IP
C D IN
C C LK
CS
C D OU T
MSB
LSB MSB
LSB
1001111
MAP = Memory Address Pointer, 8 bits, MSB first
High Impedance
Figure 17. Control Port Timing in SPI Mode
相關(guān)PDF資料
PDF描述
CDB42438 108 dB, 192 kHz 4-in, 6-out TDM CODEC
CDB42448 108 dB, 192 kHz 6-in, 8-out CODEC
CDB4245 105 dB, 24-Bit, 192 kHz Streo Sudio CODEC
CDB42518 110 dB, 192 kHz 6-Ch Codec with S/PDIF Receiver
CDB42528 114 dB, 192 kHz 6-Ch Codec with S/PDIF Receiver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CDB42438 功能描述:音頻 IC 開發(fā)工具 Eval Bd 108dB 6&8-Ch Mult-Ch CODEC RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
CDB4244 制造商:Cirrus Logic 功能描述:EVAL BD 4 INPUT/ 4 OUTPUT CODEC - Boxed Product (Development Kits) 制造商:Cirrus Logic 功能描述:Eval Board
CDB42448 功能描述:音頻 IC 開發(fā)工具 Eval Bd 108dB 8-Ch Mult-Ch CODEC RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
CDB4245 功能描述:音頻 IC 開發(fā)工具 Eval Bd 192kHz CODEC w/PGA & Input Mux RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
CDB42518 功能描述:音頻 IC 開發(fā)工具 Eval Bd RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
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