Serial Data I/O Scheme

1. CCB Format

The figure shows the Sanyo audio LSI serial bus format. Data is input and output over a CCB (computer control

bus). This LSI uses an 8-bit address CCB format.

2. Serial Data Input Timing

3. Serial Data Output Timing

Note: * The DO pin is normally open.

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

of the pull-up resistor used.

No. 4870-5/14

LC72700E, LC72700G

I/O mode

Address

Function

B0

B1

B2

B3

A0

A1

A2

A3

Input

Output

0

1

0

1

1

1

1

1

1

1

0

1

1

1

1

1

16-bit control data input

Data output

Internal data

I/O mode is set.