bh7779k ROHM Co. Ltd., bh7779k Datasheet - Page 4

• Manufacturer Part Number: bh7779k
• Description: Audio Signal Processing System
• Manufacturer: ROHM Co. Ltd.

•
Pin function - 1 / 3
4
Pin No.
Video ICs
2, 1, 3
13, 11
14, 12
15, 34
16, 33
17, 32
18, 31
19, 30
20, 29
Pin descriptions
All numerical values are standardized values.
I / O circuit; EF: emitter follower, P-P: push pull, B: base, and C: collector.
5, 4
10
21
22
6
7
8
9
INPUTSWOUT L, R
TUNER IN L, R, M
GND (GNM) L, R
VCO f
NR EMPH L, R
MUTE CTRL
PNR IN L, R
WTNG L, G
GND (GNB)
ENVE OUT
NR TC L, R
DC FB L, R
BS IN L, R
CLOCK IN
Pin name
FM PB IN
DATA IN
GNDD
0
ADJ L, R
TUNER input (L, R, and M).
BS input (L and R).
Line output mute control input.
Serial control GND.
Serial control data input.
Serial control clock input.
FM input Lch signal component envelope output.
Input SW output.
PNR audio input.
PNR attack and recovery time setting.
Attack R: 530 , recovery R: 6.5k .
Waiting characteristic high-frequency time constant setting.
NR emphasis time constant setting.
(external C = 0.01 F, R = 18k , 5.6k )
PNR operating reference potential.
VCO control current setting terminal.
PNR and MODEM GND. Both L and R unconnected.
Playback FM input. 660mV
No input coupling capacitor (GND to V
FM BPF GND.
Function
P-P
Typ.
CC
).
Pin voltage
EE: 0.8V
PB: 1.0V
– 5.0V
0.0V
0.0V
0.0V
0.0V
0.0V
0.0V
0.0V
2.5V
0.0V
0.0V
0.0V
—
—
—
—
3k (more 2.5V)
PB: EF (NPN)
BH7779K
I / O circuit
EF: (P - P)
EE: 50k
EF(NPN)
B (PNP)
B (PNP)
32.7k
93.5k
11.5k
50k
33k
—
—
—
—
—
—