No. 5876-5/16

LC72709E, 72709W

Continued from preceding page.

Pin No.

Pin Name

Function

I/O

Circuit type

LC72709E LC72709W

Output

54

50

3, 14, 35,

15, 34, 62

37

34

2, 10, 24

11,23, 43

Analog system power supply

Analog system ground

Digital system power supply (4.5 to 5.5 V)

Digital system ground

—

—

—

—

NC

1, 4, 8,

12, 16,

17, 21,

25, 28,

32, 33,

37, 41,

45, 48,

49, 53,

56, 60,

64

–

Not connection

35

Reference voltage output (Vdda/2)

51

Data I/O Techniques

• CCB Technique

Sanyo audio ICs input and output data using the Sanyo CCB (computer control bus) standard, which is a serial bus

format. This IC uses an 8-bit address CCB and uses the following addresses.

• Data Input Timing

I/O mode

Address

Function

B0

B1

B2

B3

A0

A1

A2

A3

Input

0

1

0

1

1

1

1

1

16-bit control data input

Output

1

1

0

1

1

1

1

1

Data output for the input clock (CL)

Input

0

0

1

1

1

1

1

1

Data input (in 8-bit units) for the layer 4 CRC check circuit

Internal data latching

A10595

• Data Output Timing

A10596

Note:The DO pin is normally left open.

Since the DO pin is an n-channel open drain pin, the time required for the data to change from the low level to the high level depends on the value of

the pull-up resistor.