Onkyo MB-S1, Service Manual

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MB-S1
MB-S1
MICROPROCESSOR TERMINAL DESCRIPTION
Q7502: MPD780232GC-052-8BT
FUNCTION I/O LOGIC INIT ACTIVE SLEEP P-OFF DESCRIPTION PIN NO.
1 Vdd1 - - + 5V power supply - - - -
2 Vss1 - - GND - - - -
3 X2 - - Main clock (5MHz) input terminal - - - -
4 X1 - - Main clock (5MHz) input terminal - - - -
5 GND - - GND - - - -
6 RESET - - microprocessor reset terminal - - - -
7 SUBCL/SCK I L Main microprocessor communication and a flash write-in clock input combination terminal Z Z Z Z
8 SUBDI/SDI I P Main microprocessor communication and a flash write-in data input combination terminal Z Z Z Z
9 SUBDO/SDO O P Main microprocessor communication and a flash write-in data output combination terminal L * L L
10 SUBRDY O H The data ready output terminal for communication with a main microprocessor L * L L
11 NC O No use
12 PHOTO I H Photography mode
13 SSCBJ I L SSC rotary encoder pulse input terminal Z Z Z Z
14 SSCAJ I H SSC rotary encoder pulse input terminal Z Z Z Z
15 ~IRMZ I L "Remote control 1 (ZONE2) signal input terminal Active""L"" " Z Z Z Z
16 FAVORITE O FAVORITE Light Emitting Diode output terminal
17 STBYLED O STANDBY/RECEIVED output terminal
18 GND - - The GND terminal of a A/D converter - - - -
19-22 K3-K0 I A Main part key input terminal - - - -
23 Vss0 - - GND - - - -
24 +5V - - The power supply terminal of a A/D converter and +5V are impressed - - - -
25 Vdd0 - - + 5V power supply - - - -
26 ~SYSIN I L System bath input terminal Z Z Z Z
27 ~SYSOUT O L System bath output terminal H * L Z
28-54 P35-P9 O H Fluorescence display pipe segment output terminal L * L L
55-58 P8-P5 - - Fluorescence display pipe segment output terminal - - - -
59 Vdd2 - - + 5V power supply - - - -
60 Vload - - The pull down resistance connection terminal of a FIP controller - - - -
61-64 P4-P1 - - Fluorescence display tube segment output terminal - - - -
65-80 16G-1G - - Fluorescence display tube output terminal