Sony RCD-W500C Service Manual page 92

RCD-W500C
• IC501 HD6433064BA02FV µCOM (CDR Board)
Pin No. Pin Name
1 VCL
2 XCSCDR
3 to 5 NU
6 XRSTRFP
7 XREQI
8 XRDYO
9 XRSTCDR
10 FWE
11 VSS
12 SDATAO(PROM)
13 SDATAO(HOST)
14 SDATAI(PROM)
15 SDATAI(HOST)
16 SCLKO
17 SUB_SYNC
18 RSBETA
19, 20 NU
21 MIRR/XRC
22 VSS
23 AGCON
24 XRW/R
25 VRDSW
26 VWDSW
27 to 34 D8 to D15
35 VCC
36 to 43 A0 to A7
44 VSS
45 to 56 A8 to A19
57 VSS
58 NU
59 CS
60 XLAT
61 ATIPSYNC
62 XSTBY
63 XREST
64 XP.DOWN
65 VSS
66 EXTAL
67 XTAL
68 VCC
69 XAS
70 XRD
71 XHWR
72 XLWR
73 MD0(H)
74 MD1(L)
75 MD2
76 AVCC
77 AVREF
78 KEY
92
I/O
— Capacitor connection terminal for the internal power supply
O Chip select signal output to the IC201
— Not used (fixed at "H")
O Register reset signal output to the IC101
I Data request signal from the IC1
O Data ready signal to the IC1
O Reset signal to the IC201
I Flash memory write enable signal input
— Ground terminal
O Serial data output to the IC101 and IC502
O Serial data output to the IC1
I Serial data input from the IC502
I Serial data input from the IC1
O Clock output to the IC101 and IC502
I Sub-code sync signal input from the IC201
β measurement circuit reset signal output
O
— Not used (fixed at "H")
O MIRR or RC selection signal output
— Ground terminal
O AGC enable signal output to the IC101
O CD-RW selection signal output to the IC101
O Read laser driver time constant selection switch control signal output to the IC101
O Write laser driver time constant selection switch control signal output to the IC101
I/O Data bus with the IC201
— Power supply (+5V)
O Command register selection address signal output to the IC201
— Ground terminal
O Not used (fixed at "H")
— Ground terminal
— Not used
O Chip select signal output to the IC502
O Data latch signal output to the IC101
I ATIP SYNC signal input from the IC201
I Not used (fixed at "H")
I System reset signal input
I Not used
— Ground terminal
I Ceramic resonator connection terminal
I Ceramic resonator connection terminal
— Power supply (+5V)
O Not used
O Data read signal output to the IC201
O Data write signal output to the IC201
O Not used
I Mode selector (fixed at "H")
I Mode selector (fixed at "L")
I Mode selector (normally fixed at "H")
— Power supply (+5V) for the A/D converter
— Reference voltage for the A/D converter
I Key scan signal input
Description