JVC RX-DV31SL Service Manual page 55

6.32 S-93C66AFJ-X (IC451) : Memory
• Pin layout
NC 1
Vcc 2
CS 3
SK 4
Top view
• Pin function
Pin No. Symbol Function
1 NC Not connect
2 Vcc Power supply
3 CS Chip select input
4 SK Serial clock input
5 DI Serial data input
6.33 SI-8033JF (IC191) : Switching regulator
• Block Diagram
Vin
ON/OFF
8 TEST
7 GND
6 DO
5 DI
1
PReg
5
ON/OFF
Soft-
Start
Oscillator
6 DO
7 GND
8 TEST
• Block diagram
Memory array
Data register
DI
Mode decode
logic
CS
Clock generator
SK
circuit
Over-current
protection
Latch
Reset
&
Driver
+ Heating
- protection
Comparator
Error amp
+
-
Standard
voltage
3
GND
Serial data output
Ground
TEST pin:Open
VCC
Address
decoder
GND
Output buffer
2
SW OUT
VOS
4
(No.22023)1-55
DO