CE2766 查看數據表（PDF） - Unspecified

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CE2766

6-Channel Audio DAC, 24-bit, 192kHz

Unspecified 

CE2766

INFINITE ZERO DETECTION

The CE2766 has an Infinite Zero Detection circuit which detects zero in the Audio Serial Port that lasts for approximately 0.1

sec. By default, the zero detection circuit is on.

Serial Command Port

The user can select the chip operation mode by programming the internal control registers through serial I2C port. The Chip

Address for the CE2766 is 35H. The protocol for write operation consists of sending 3 byte data to CE2766, following each

byte is the acknowledges generated by CE2766. The first byte is the 7-bit Chip Address followed by the read/write bit (read is

high, write is low). The second byte is the control register address. The third byte is the control register data.

Upon power up, all programmable registers are set to default values. Figure 2 describes the serial command port timing

relationship.

Figure 2. Serial Command Port Timing

I2C Bus Control Register Write Example:

first byte

Start CA6

SDA

11

1

SCL

CA0 R/W ACK A7

1

second byte

A0 ACK D7

third byte

D0 ACK Stop

Example

Set channel 1L volume to 30H:

first byte: [CA R/W] = 6AH

( Note: Chip adrress: CA<6:0> = 35H, R/W =0.)

second byte: register address: A<7:0> = 02H

third byte: data D<7:0> = 30H

8-19

June 25, 2005

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