CS5376 查看數據表（PDF） - Cirrus Logic

零件编号

产品描述 (功能)

生产厂家

CS5376

Low Power Multi-Channel Decimation Filter

Cirrus Logic 

CS5376

device outputs data based on the read request, and

the CS5376 selects a serial input pin from which to

receive.

As an example, if two read-write serial devices are

to be connected to the SPI 2 port, two chip select

pins must be dedicated to them. The remaining

three chip select pins can each connect up to four

read-only serial devices, for a maximum of two

read-write and twelve read-only devices controlla-

ble through the SPI 2 port.

6.3 SPI 2 Registers

SPI 2 transactions are initiated by writing com-

mand, address, and data values to the SPI2CMD

and SPI2DAT registers, and then writing the

SPI2CTRL register with the D2SREQ bit set. Writ-

ing the D2SREQ bit initiates a transaction using the

programmed configuration.

6.3.1 SPI 2 Command Register

The SPI2CMD register (0x11) is a 16-bit register in

the decimation engine with the high byte designat-

ed as an SPI command and the low byte designated

as an address. The high byte (bits 15-8) holds the

SPI ‘write’ (0x02) or ‘read’ (0x03) command, and

the low byte (bits 7-0) holds an 8-bit destination or

source address.

During a transaction the bytes in SPI2CMD are al-

ways output first, with the SPI2DAT register writ-

ten or read following.

6.3.2 SPI 2 Data Register

The SPI2DAT register (0x12) is a 24-bit register in

the decimation engine with three bytes designated

for serial data. Data in SPI2DAT is always LSB

aligned, with 1-byte data written or received using

the low byte (bits 7-0), 2-byte data written or re-

ceived using the middle and low bytes (bits 15-0),

and 3-byte data written or received using all three

bytes (bits 23-0).

SCK2 - SPI 2 Clock Output, pin 31

Output clock from the Serial Peripheral Interface 2 port. Maximum rate is 4.096 MHz.

SO - SPI 2 Data Output, pin 30

Serial Peripheral Interface 2 data output.

SI1 - SPI 2 Data Input 1, pin 29

Serial Peripheral Interface 2 data input 1.

SI2 - SPI 2 Data Input 2, pin 28

Serial Peripheral Interface 2 data input 2.

SI3 - SPI 2 Data Input 3, pin 27

Serial Peripheral Interface 2 data input 3.

SI4 - SPI 2 Data Input 4, pin 26

Serial Peripheral Interface 2 data input 4.

Figure 22. Serial Peripheral Interface 2 Pins

DS256PP1

41

Share Link: