Pioneer CDX-FM1277, Руководство по обслуживанию

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55
CDX-FM1277,FM1279
7.2 PARTS
7.2.1 IC
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Pin Functions (PD5638A)
Pin No. Pin Name I/O Format Function and Operation
1 PLDT O C PLL data output
2 PLCK O C PLL clock output
3
adena
O C A/D reference voltage output
4 TXTSTB O C TEXT parameter output
5 TXTSO O C TEXT control parameter serial output
6 TXTSI I TEXT data serial input
7 TXTSCK O C TEXT clock output
8 BYTE I VCC joint
9 CNVSS I VSS joint
10 POWER O C CD +5V control output
11 CONT O C Servo driver output control
12
reset
I Reset input
13 XOUT O Crystal oscillating element connection pin
14 VSS GND
15 XIN I Crystal oscillating element connection pin
16 VCC VDD
17
nmi
I Pull up
18
bsens
I Back up power sense input
19
asens
I Acc sense input
20 TXTPACK I TEXT PACK interrupt input
21 IPTA4IN I IPIN joint
22 IPPW O C Power supply control output for IP-BUS interface IC
23 DISPPW O C Key/Display microcomputer supply control
24 OPTSEL I Pull down
25 SRAMSW I ”H”
26 FMPCB I Pull up
27 SIMUKE I ”L”
28 NC Not used
29 IPIN I Data input from IP-BUS interface IC
30 IPOUT O C Data output for IP-BUS interface IC
31 DPDT O C Display data output
32 KYDT I Key data input
33 FMIPSW I FM/IP-BUS select switch
34
testin
I Test program mode input
35 XSO O C CD LSI data output
36 XSI I CD LSI data input
37 XSCK O C CD LSI clock output
38 M6M12 I 6/12 disc select input
39–43 NC Not used
44
rd
O C SRAM enable output
45 NC Not used
46
wr
O C SRAM write enable output
47 SYSPW O C System power supply control output
48
cs
O C SRAM chip select output
49 XAO O C CD LSI data discernment control signal output
50
xstb
O C CD LSI strobe output
51
xrst
O C CD LSI reset output
52 NC Not used
53 LOCK I Spindle lock detector input
54 FOK I FOK signal input
55 NC Not used
56 A11 O C SRAM address bus output
57 A9 O C SRAM address bus output
58 A8 O C SRAM address bus output
59 A13 O C SRAM address bus output
60 A14 O C SRAM address bus output
61 A12 O C SRAM address bus output
62 VCC VDD