Serial Data Input and Output Methods

Data is input and output using the CCB (computer control bus), which is the Sanyo audio IC serial bus format. This IC

adopts an 8-bit address CCB format.

Serial data input (IN1, IN2)

CL: Normal high

CL: Normal low

No. 6488-11/14

LC72720Y, 72720YV

I/O mode

(LSB)

Address

(MSB)

Comment

B0

B1

B2

B3

A0

A1

A2

A3

1

IN1 (6A)

01010110

· Control data input mode, also referred to as “serial data input” mode.

· This is a 16-bit data input mode.

2

IN2 (6B)

11010110

· Control data input mode, also referred to as “serial data input” mode.

· This is a 16-bit data input mode.

3

OUT (6C)

00110110

· Data output mode, also referred to as “serial data output” mode.

· The data for multiple blocks can be output sequentially in this mode.

CE

CL

DI

DO

B0

B1

B2

B3

A0

A1

A2

A3

First Data IN1/2

First Data OUT

First Data OUT

A13212

1

2

1

2

tSU

tHD

tEL

tES

tEH

tLC

tCE

B0

B1

B2

B3

A0

A1

A2

A3

FS0

CT1

FS1

0

FS2

0

FS3

0

EC3

TS0

EC4

TS1

CT0

TS2

0

TS3

CE

CL

DI

A13213

tSU

tHD

tEL

tES

tEH

tLC

tCE

B0

B1

B2

B3

A0

A1

A2

A3

FS1

0

FS0

CT1

FS2

0

FS3

0

EC3

TS0

EC4

TS1

CT0

TS2

0

TS3

CE

CL

DI

A13214

I/O mode determined

➀ For the CL normal high state

➁ For the CL normal low state

Internal data

Internal data