Yamaha CD-S300 Service Manual page 25

IC7: LC87F1HC8A (MAIN P.C.B.)
CMOS LSI
Timer 0
Timer 1
Timer 4
Timer 5
Timer 6
Timer 7
Base timer
USB host
Interrupt control
Standby control
CF USB PLL
RC
Clock
generator
X'tal
SIO0
Bus interface
SIO1
SIO4
SIO9
INT0 to INT7
Noise filter
Audio interface
Infrared remote
control receiver circuit
PWM0
PWM1
37
UHD-
UHD+ 38
V DD 3
39
V SS 3
40
P34/UFILT 41
P33/AFILT 42
P32 43
P31/URX1 44
P30/UTX1
45
P70/INT0/T0LCP/AN8 46
P71/INT1/T0HCP/AN9 47
P72/INT2/T0IN 48
IR
Port 0
Port 1
Port 2
Port 3
Port 7
UART1
Stack pointer
ADC
Watchdog timer
Onchip debugger
24
P03/AN3/DBGP1
23 P02/AN2/DBGP0
22 P01/AN1
21 P00/AN0
V SS 2
20
V DD 2
19
18 PWM0/MCLKO
17 PWM1/MCLKI
P17/T1PWMH/BUZ
16
15 P16/T1PWML
14 P15/SCK1
13 P14/SI1/SB1
CD-S300
PLA
FROM
PC
ACC
B register
C register
ALU
PSW
RAR
RAM
25