Ic Data - Yamaha HTR-5920 Service Manual

HTR-5920
I IC DATA
IC81: TMP87PS71AF (FRONT P.C.B.)
Microprocessor
(CIN5/KEY6) P46
(CIN4/KEY7) P47
(PWM/PDO) P55
VDD
Power Supply
VSS
VFT Power
VKK
Supply
Reset I/O RESET
TEST
Test Pin
XIN
Resonator
XOUT
connecting
Pins
20
64 63 62 61 60 59
(SIS) P97
65
VKK
66
(KEY0) P40
67
(KEY1) P41
68
(KEY2) P42 69
(KEY3) P43
70
(KEY4) P44
71
(KEY5) P45
72
73
74
(CIN3) P50 75
(CIN2) P51 76
(CIN1) P52 77
(CIN0) P53
78
P54 79
80
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
I/O Ports Output Ports
P97 P87
to to
P90 P80
P9 P8
VFT drive circuit (automatic display)
P S W
Flags RBS
ALU
System Controller
Standby Controller
Timing Generator Time Base
Timer
High
frequ.
Clock
Generator
Low Watchdog
frequ. Timer
P2 P0
P22 P07
to to
P20 P00
58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
I/O Ports
P77 P67
to to
P70 P60
P7 P6
Stack Pointer
Data Memory
(RAM)
Register banks
Interrupt Controller
16-bit 8-bit
Timer/Counters Timer/Counters
TC1 TC2 TC3 TC4
P1
P17
to
P10
I/O Ports
P66 (G9)
40
P65 (G10)
39
P64 (G11)
38
P63 (G12)
37
36 P62 (G13)
P61 (G14)
35
P60 (G15)
34
VDD
33
32 P07
31
P06
30 P05
29 P04
28 P03
P02
27
26 P01
25 P00
Key scan
control
Program counter
Program Memory
(ROM)
Inst.
Register
Inst.
Serial
Decoder
Interfaces
SIO HSO
6-bit
Comparator
P3 P5 P4
P37 P55 P47
to to to
P30 P50 P40