No. 6871-6/29

LC72714W

Continued from preceding page.

Pin No.

Pin

Function

I/O

Pin circuit

Subcarrier input (comparator input)

56

CIN

Vref

–

+

Input

Reference voltage output (Vdda/2)

52

VREF

Vssa

Vdda

Output

CCB serial interface data output

36

DO

Output

—

—

—

—

This pin must be left open

37

50

57

NC

Analog system power supply

Analog system ground

Digital system power supply (+2.7 V to +3.6 V)

Digital system ground

54

51

2, 15, 34

14, 35, 63

Control Registers

This IC includes both registers that can be read and registers that can be written. These registers can be accessed using

either the serial interface (CCB) or the parallel interface. The SP pin switches between these interfaces.

The initial values of the write registers are the data loaded into internal registers when a reset signal (RST) is received.

These values are recommended values that do not need to be changed during normal operation.

If the parallel interface is used, applications must hold the address fixed at 00H when reading out data to which error

correction has been applied. If the CCB interface is used, the application needs only to specify the CCB address (#FB).

The address 00H is an invalid address for writing.

The addresses other than those specified below are control addresses particular to the IC. Applications must not specify

those addresses.

Address

Register

Function

R/W

Address

Register

Function

R/W

1

BIC

Number of allowable BIC errors

W

1

STAT

Status register

R

2

SYNCB

Block synchronization: error protection count

W

2

BLNO

Block number register

R

3

SYNCF

Frame synchronization: error protection count

W

4

CTL1

Control register 1

W

5

CTL2

Control register 2

W

6

CRC4

Layer 4 CRC register

W