Kenwood RXD-501 Service Manual page 11

5. FL driver Microprocessor : uPD780204-038 (X14, IC1)
5-1Pin description
No Name
1 VDD
2 LED DISC1
3, 4 NC
5~9 LED A~E
10 RESET
11 X2
12 X1
13 VSS
14 NC
15 NC
16 VDD
17 DRIVER CLK
18 DRIVER SOUT
19 SIN
20,21 NC
22 LED SRS
23 LED 3 STEREO
24 LED PROLOGIC
25 AVSS
26 A/D7
27~33 A/D6~A/D0
34 AVDD
35 AVREF
36,37 NC
38 REM IN
39 DRIVER ST
40 VSS
41 LED EQ
42~44 ECHO 3~1
45 ECHO MUTE
46 VDD
47 NC
48~63 SEG16~SEG1
64~70 SEG17~SEG23
71~78 SEG24~SEG31
79 VLOAD
80~88 SEG32~SEG40
89~100 1G~12G
RXD-501/551/571/A5/701/751/771/A8
I/O
– u-COM power supply (+5V)
O Disc LED 1~3 control
– No used
O CD running indicator control (D33~D37)
I System reset
– Main system clock (5MHz)
I Main system clock (5MHz)
– GND
– No used
– GND
– u-COM power supply (+5V)
I Serial clock
O Serial data output
I Serial data input
– No used
O LED control terminal (SRS)
– No used
– No used
– GND
– GND
I Key return signal (6~0)
– A/D power supply
– A/D reference voltage
– GND
I Remocon signal input
I Strobe signal input
– GND
O LED control terminal (SOUND)
– No used
– No used
– u-COM power supply (+5V)
– No used
O FL segment control (SEG16~SEG1)
O FL segment control (SEG17~SEG23)
O FL segment control (SEG24~SEG31)
– Vload (-30V)
O FL segment control (SEG32~SEG40)
O FL grid control (1G~12G)
Description
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