TDK blu2i 用户手册

 
The module is a slave device that uses terminals SPI_MOSI, SPI_MISO, 
SPI_CLK and SPI_CSB. This interface is used for program firmware 
update. 
 
Note: The designer should be aware that no security protection is built 
into the hardware or firmware associated with this port, so the terminals 
should not be permanently connected in a PC application. 

 
Five lines of programmable bi-directional input/outputs (I/O) are 
provided. GPIO[1:5] are powered from VCC. The mode of these lines 
can be configured and the lines are accessed via S Registers 621 to 
625. 
 
Auxiliary functions available via these pins include an 8-bit ADC and an 
8-bit DAC. This function is not implemented at this time. 

 
PCM_OUT, PCM_IN, PCM_CLK and PCM_SYNC carry up to three bi-
directional channels of voice data, each at 8K samples/s. The format of 
the PCM samples can be 8-bit A-law, 8-bit µ-law, 13-bit linear or 16-bit 
linear. The PCM_CLK and PCM_SYNC terminals can be configured as 
inputs or outputs, depending on whether the module is the Master or 
Slave of the PCM interface. 
 
The blu

2i

 module is compatible with the Motorola SSI TM interface and 

interfaces directly to PCM audio devices including the following: 
 

•  Qualcomm MSM 3000 series and MSM 5000 series CDMA 

baseband devices 

•  OKI MSM7705 four channel A-law and µ-law CODEC 

•  Motorola MC145481 8-bit A-law and µ-law CODEC 

•  Motorola MC145483 13-bit linear CODEC 

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