Kenwood Z910DVD, Service Manual

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PinNo. Pin name I/O Description Processing Operation
10 REMO I Remote control signal input
11 NC O Output open.
12 VFD_LATCH O Latch output to VFD driver
13 VFD_GCP O Luminance gradation control output to VFD driver
14~16 A13~A15 O Address output "A13" ~ "A15" to external ROM
17 VFD_BLK O Blank output to VFD driver Display ON : High. Display OFF : Low.
18 IC/Vpp Test
19 A5 O Address output "A5" to external ROM
20~26 A6~A12 O Address output "A6" ~ "A12" to external ROM
27~30 A1~A4 O Address output "A1" ~ "A4" to external ROM
31 RESET I Reset input
32 XT1 Resistor connected to GND
33 XT2 OPEN
34 REGC 1 uF connected to GND
35, 36 X2, X1 Connected to Main X'tal
37 Vss Connected to GND
38 Vdd Connected to PNL 5 V
39 CLKOUT OPEN
40~42 NC O OUTPUT OPEN
43 OE O Output Enable output to external ROM
44 CE O Chip Enable output to external ROM
45, 46 NC O OUTPUT OPEN
47~54 AD0~AD7 I Data input "AD0" ~ "AD7" from external ROM
55 BVdd Connected to PNL 5 V
56 BVss Connected to GND
57~64 AD8~AD15 I Data input "AD8" ~ "AD15" from external ROM
65~68 A16~A19 O Address output "A16" ~ "A19" to external ROM
69 NC O OUTPUT OPEN
70 A21 O Address output "A21" to external ROM
71 AVdd Connected to PNL 5 V
72 AVss Connected to GND
73 AVref
74 SA_F01 I Spectrum analyzer signal input (63Hz)
75 SA_F02 I Spectrum analyzer signal input (150Hz)
76 SA_F03 I Spectrum analyzer signal input (330Hz)
77 SA_F04 I Spectrum analyzer signal input (1KHz)
78 SA_F05 I Spectrum analyzer signal input (3.3KHz)
79 SA_F06 I Spectrum analyzer signal input (10KHz)
80 LEVEL_M I MIX signal input for level meter
81~85 KR5~KR1 I Key return "5" ~ "1"
86 PN_SC_REQ O Send request output to Main uCOM
87 AVCONT O A/D reference voltage control output Operating : High.
88 PN_SC_CON I Operation control input from Main uCOM Operating : High. (Interrupt input)
89 NC O Output open.
90 SOURCE I SRC key input ON : High. OFF : Low. (Interrupt input)
91 BLUE O Blue LED control output LED ON : HI, LED OFF : LO
92 PN_MC_REQ I Send request input from Main uCOM
93 KS4 O Key scan "4"
94~96 KS3~KS1 O Key scan "3" ~ "1" and Flash uCOM write por t
97 PN_SC_DATA I Data input from Main uCOM
98 PN_MC_DATA O Data output to Main uCOM
99 PN_MC_CLK I Clock input from Main uCOM
100 NC I Resistor connected to GND
Z910DVD
MICROCOMPUTER’S TERMINAL DESCRIPTION