Kenwood GX-204KE Service Manual page 10

GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
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MICROCOMPUTER'S TERMINAL DESCRIPTION
3 7 63 1515 0
Pin No. Pin Name
22 MD2
23 X0
24 X1
25 VSS1
26 P00
27 P01
28 NC
29 SW_5V
30 POWER
31 ENC_DW
32 ENC_UP
33 NC
34 SP_REQ_S
35~38 NC
39 KR7
40,41 KR2, KR1
42 NC
TE
L 13942296513
43 FL_BLK
44~47 NC
48 SDA
49 SCL
50 VSS2
51 NC
52 TYPE1
53 NC
54 BRIGHT
55 HTR
56 NC
57 VCC
58 C
59 NC
60 FL_SO
61 FL_CLK
62 FL_LAT
63,64 NC
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I/O Application
I For FLASH ROM writing
µ-com clock oscillator
µ-com clock oscillator
Power supply GND
I FLASH writing method setting
I FLASH writing method setting
O Not used
O SW series 5V power supply
I POWER
I Rotary encoder SW (B phase wave form)
I Rotary encoder SW (A phase wave form)
O Not used
Request from system µ-com → panel µ-com
I
O Not used
I Key scan pulse input terminal
I Key scan pulse input terminal
O Not used
FL data blanking output terminal
O
(FL tube luminance adjustment)
O Not used
I/O Serial data for E2PROM
O Serial clock for E2PROM
Power supply GND
O Not used
I Destination setting
O Not used
I Change logic when brightness changes
I For determining bright terminal valid/invalid
O Not used
Power supply input
- Voltage stabilizing process terminal
O Not used
O FL data output terminal
O FL clock output terminal
O FL data latch control terminal
O Not used
x ao
y
i
8
Hi: FLASH writing mode, Lo: Normal mode
4.0MHz (ceramic oscillator)
4.0MHz (ceramic oscillator)
GND potential
Output L fixed
Lo: ON, Hi: OFF
Lo: ON, Hi: OFF
Port monitoring of pulse with 1ms cycle timer
Port monitoring of pulse with 1ms cycle timer
Output L fixed
Hi: ON, Lo: OFF
Output L fixed
Output L fixed
Q Q
Adjusts luminance with duty ratio.
3 6 7 1 3
Hi: OFF, Lo: ON
Output L fixed
Input/output to E2PROM
Output to E2PROM
GND potential
Output L fixed
H: Left-hand steering, L: Right-hand steering
Output L fixed
Operation: When "H", bright data is finalized at UART
Operation: When "H", bright terminal is valid
Output L fixed
Bu5V potential
0.1µF condenser connection
Output L fixed
Output L fixed
u163
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2 9 9 4 2 8
Processing Operation Description
1 5 0 5 8 2 9 9 4
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9 9
2 8 9 9