HA12155 データシートの表示（PDF） - Hitachi -> Renesas Electronics

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HA12155

Audio Signal Processor for Cassette Deck (Dolby B/C-type NR with Recording System)

Hitachi -> Renesas Electronics 

Table 4 Serial Data Formatting

Bit Control

No. register

0 TAPE

SELECT 1

Volume register

H

L

TS1

TS2

H

L

H

TAPE IV TAPE I

L

TAPE II TAPE I

HA12155NT/HA12157NT

DAC0

bit No.

5 4 3 2 1 0 gain

L L L L L L increase

LLLLLH

LL LLHL

L L L LHH

1 TAPE

H

DAC1

SELECT 2 L

2 TAPE

H High (double) speed selection DAC2

SPEED

L Normal speed selection

3 METER

H Meter sensitivity 20 dB up

DAC3

SENSITIVITY L Meter sensitivity normal

4 INPUT

H

DAC4

SELECT 1

L

IS1

IS2

H

L

H PB I VR I

HHHHL H

H H H H H L decrese

H H H H H H mute

*mute is implemented when all

bits are high.

L RP I VR I

5 INPUT

H

DAC 5

SELECT 2 L

6 REC/PB

H PB mode selection

R/L SELECT H Rch register selection

L REC mode selection

L Lch register selection

7 REGISTER H Control register selection

SELECT

REGISTER L Volume register selection

SELECT

Note: TAPE I: Normal tape, TAPE II: Chrome tape, TAPE IV: Metal tape

Rev.4, Jun. 1997, page 17 of 57

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