Sony MEX-BT5000 Service Manual page 48

MEX-BT5000
IC506 XR16L2550IM-F
48 47 46 45 44 43
D5 1
D6 2
D7 3
RXB 4
RXA 5
TXRDYB# 6
TXA 7
TXB 8
OP2B# 9
CSA# 10
CSB# 11
NC 12
13 14 15 16 17 18 19
IC513 S-1170B19UC-OTETFG
ON/OFF
ON/OFF 1
CIRCUIT
REFERENCE
VOLTAGE
CIRCUIT
THERMAL
SHUTDOWN CIRCUIT
VSS 2
NC 3
IC515, 517 S-80930CLNB-G60T2G
VSS 1
VREF
+
DELAY
CIRCUIT
–
VDD 2
48
TRANSMIT
SHIFT RESISTER
(THR/FIFO)
RECEIVER
SHIFT RESISTER
(RHR/FIFO)
8-bit DATA
BUS
INTERFACE
GENERAL
PURPOSE
CONTROL
CRYSTAL
OSC/BUFFER
5 VOUT
–
+
4 VIN
OVERCURRENT
PROTECTOR
4 OUT
3 CD
42 41 40 39 38 37
MODEM
LOGIC
20 21 22 23 24
IC516 TC7WBL126AFK
OE1
A1
B2
GND
36 RESET
35 DTRB#
34 DTRA#
33 RTSA#
32 OP2A#
31 RXRDYA#
30 INTA
29 INTB
28 A0
27 A1
26 A2
25 NC
1 8 VCC
7 OE2
2 6 B1
SWITCH
3
4
SWITCH
5 A2