Marantz SR7500/A1B Service Manual page 60

IC36 (DSP PCB): H8S/2505(HD64F2505)
Port
Pin I/O
mode = 7
120 P36/RxD4 I/O,I
121 P35/SCK1/ I/O,I/O,I/
SCK4/SCL0/ O,I/O,I
~IRQ5
122 P34/RxD1/SDA0 I/O,I,I/O
123 P33/TxD1/SCL1 I/O,O,I/O
124 P32/SCK0/SDA1/ I/O,I/O,I/
~IRQ4 O,I
125 P31/RxD0 I/O,I
126 P30/TxD0 I/O,O
127 P77/TxD3 I/O,O
128 P76/RxD3 I/O,I
129 P75/TMO3/SCK3 I/O,I/
O,I/O
130 P74/TMO2/ I/O,O
~MRES
131 P73/TMO1 I/O,O
132 P72/TMO0 I/O,O
133 P71/TMRI23/ I/O,O,O
TMCI23
134 P70/TMRI01/ I/O,O,O
TMCI01
135 PG4 I/O
136 PG3 I/O
137 PG2 I/O
138 PG1/~IRQ7 I/O,I
139 PG0/~IRQ6 I/O,I
140 PE0 I/O
141 PE1 I/O
142 PE2 I/O
143 PE3 I/O
144 PE4 I/O
Use STBY Name
SI I USB_CSDAI
SC I USB_CSCL
O I NC
O I NC
INT I REQ2
SI I RXD
SC I TXD
SO O OSDDATA
I I
SC I OSDCLK
O I _RSTFL
O I _CEFL
I I USB_MUTE
I I USB_PLL_
UNLOCK
O I CLK_SW
O I _SCS
O I _RSTDSP
O I _FCS
INT I IRQ7
INT I USB_CCE
O I NC
O I _CEEX
O I Y_OSD
O I CVBS_OSD
O I _CEOSD
Port Setting
Note
Act. init
Serial Data OUT from USB Module (USB
CSDAO) This is not used.
Serial Clock from USB Module. This is not used.
open
open
L - DSP FINTR EQ
UART for RS232C, Flash WRNeed Pull
UPRESET=H
UART for RS232C, Flash WRNeed Pull UP
- - FrontFL,Video(OSD),Y/C&Sepa,4094,SAA,AK
- - PULL DOWN
- - FrontFL,Video(OSD),Y/C&Sepa,4094,SAA,AK
L L Reset FL Driver
L L FL Driver Chip Select
for Audio Mute Control. This is not used.
for Clock Control. This is not used.
TC74VHC157 SEL
L H DSP CHIP ENABLE
L L DSP
L H DSP CHIP ENABLE
- - RDS Clock
L - Chip Enable for SPI. This is not used.
- - open
L H P-Exp(Video)Sel A
H L Y/C_OSD_IC_BYPASS
H L CVBS_OSD_IC_BYPASS
L H Video Circuit
80