JVC KD-SX925R - Page 15

KD-SX979R/KD-SX925R
KD-SX924R/KD-SX909R
2-12
~
~
114
28 15
LA6557-X(IC501):Driver
1.Terminal layout
2.Block diagram
VCC2 1
2
3
4
5
6
7
8
9
10
11
12
13
14
V05-
V05+
V04+
V04-
V03+
V03-
FR FR
28
27
26
25
24
23
22
21
20
19
18
17
16
15
FR
V02+
V02-
V01+
V01-
VCC1
VIN1+
VIN1-
REV
FWD
S-GND
MUTE
VIN+
VIN4-
VCC-S
FR
VREF-IN
REG-OUT
REG-IN
VIN3-
VIN3+
VIN2-
VIN2+
INPUT
MUTE
Thermal shutdown
Output control
Level Shift Level Shift Level Shift Level Shift
CH3,4,5
POWER
CH5
CH4
CH3
CH2
CH1
MUTE is as follows:
High : Output ON
Low : Output OFF
22K 11K
Signal System Power
CH1,2
Power
22K
22K
22K
11K
11K
11K
SVREG (External PNPTr)