Kenwood GX806EF2 Service Manual page 8

GX806EF2
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MICROCOMPUTER'S TERMINAL DESCRIPTION
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Pin No. Pin Name
27 P01
28 NC
29 SW_5V
30 POWER
31 ENC_DW
32 ENC_UP
33 NC
34 SP_REQ_S
35 EJECT
36~42 NC
43 FL_BLK
44~47 NC
48 SDA
49 SCL
50 VSS2
TE
51~56 NC
L 13942296513
57 VCC
58 C
59 NC
60 FL_SO
61 FL_CLK_OUT
62 FL_LAT
63,64 NC
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I/O Function
I/O Setting for FLASH ROM writing method
O
O VFD power supply ON signal
I POWER
I Rotary encoder SW (B-phase waveform)
I Rotary encoder SW (A-phase waveform)
O
I Request from SYS_COM
I EJECT
O
FL data blanking output terminal
O
(FL tube brightness adjustment)
O
I/O E2PRROM serial data
O E2PROM serial clock
Power supply GND
O
Power supply input
- Processing terminal for voltage stabilizing
O
O FL data output terminal
O FL clock output terminal
O FL data latch control terminal
O
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Processing Operation Description
H : Serial writing permission
Not Used
When stopped (L) : Power supply OFF
When in normal operation (H) : Power supply ON
L : ON, H : OFF
Pulses are port input by 1ms-cycle timer
Pulses are port input by 1ms-cycle timer
Not Used
Interruption occurs only on H level
L : ON, H : OFF
Not Used
Brightness adjustment is conducted by duty ratio
Not Used
Input/output to E2PROM
Output to E2PROM
GND electrical potential
Q Q
Not Used
3 6 7 1 3 1 5
Bu5V electrical potential
0.1µF condenser connection
Not Used
Display data transmission to VFD. 0.5MHz
Synchronization clock output for VFD serial communication
When not displaying, output OFF count is carried out
Not Used
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