LC72720N データシートの表示（PDF） - SANYO -> Panasonic

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LC72720N

Single-Chip RDS Signal-Processing System LSI

SANYO -> Panasonic 

CCB Input Data Format

[1] CCB address 6A

LC72720N, 72720NM

IN1 data, first bit

[2] CCB address 6B

IN2 data, first bit

(11) Circuit control

(5) Error correction method setting

(4) RAM write control

(3) Synchronization and RAM address reset

(2) Synchronization detection method setting

(1) Synchronization protection method setting

Note: The bits labeled with an asterisk must be set to 0.

(10) Test mode settings

(9) Output pin settings

(8) RDS/RBDS selection

(7) Demodulation circuit phase control

(6) Crystal oscillator frequency selection

(11) Circuit control

1. Synchronization protection (forward protection) method setting (4 bits): FS0 to FS3

FS3 = 0: If offset words in the correct order could not be detected continuously during the number of blocks specified

by FS0 to FS2, take that to be a lost synchronization state.

FS3 = 1: If blocks with uncorrectable errors were received consecutively during the number of blocks specified by

FS0 to FS2, take that to be a lost synchronization state.

FFF

SSS

012

Condition for detecting lost synchronization

0 0 0 If 3 consecutive blocks matching the FS3 condition are received.

1 0 0 If 4 consecutive blocks matching the FS3 condition are received.

0 1 0 If 5 consecutive blocks matching the FS3 condition are received.

1 1 0 If 6 consecutive blocks matching the FS3 condition are received.

0 0 1 If 8 consecutive blocks matching the FS3 condition are received.

1 0 1 If 10 consecutive blocks matching the FS3 condition are received.

0 1 1 If 12 consecutive blocks matching the FS3 condition are received.

1 1 1 If 16 consecutive blocks matching the FS3 condition are received.

Initial value: FS0 = 0, FS1 = 1, FS2 = 0, FS3 = 0

2. Synchronization detection method setting (1 bit): BS

BS

Synchronization detection conditions

0 If, during 3 blocks, 2 blocks of offset words were detected in the correct order.

1 If the offset words were detected in the correct order in 2 consecutive blocks.

Initial value: BS = 0

No. 5877-7/14

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