LC72709E 查看數據表（PDF） - SANYO -> Panasonic

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LC72709E

FM Multiplex Reception IC for Mobile Systems

SANYO -> Panasonic 

Continued from preceding page.

Pin No.

LC72709E LC72709W Pin Name

LC72709E, 72709W

Function

I/O

35

51

VREF

Reference voltage output (Vdda/2)

Output

Circuit type

37

54

VDDA

Analog system power supply

—

34

50

VSSA

Analog system ground

—

2, 10, 24 3, 14, 35, VDDD

Digital system power supply (4.5 to 5.5 V)

—

11,23, 43 15, 34, 62 VSSD

Digital system ground

—

1, 4, 8,

12, 16,

17, 21,

25, 28,

–

32, 33,

37, 41,

45, 48,

49, 53,

56, 60,

64

NC

Not connection

Note: A capacitor of at least 2000 pF must be inserted between VDDD and VSSD when using this IC.

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.

Address

I/O mode

B0 B1 B2 B3 A0 A1 A2 A3

Function

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

• Data Input Timing

• Data Output Timing

Internal data latching

A10595

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.

No. 5876-5/16

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