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UD-301/351
CIRCUIT DESCRIPTION
PD ... PULL DOWN
Pin Description
PU ... PULL UP
Name
Description
1
AID (1 kHz)
Spectrum analyzer 1 kHz analog input
2
A/D (2.5 kHz)
Spectrum analyzer 2.5 kHz analog input
3
A/D (6.3 kHz)
Spectrum analyzer 6.3 kHz analog input
4
AID (16 kHz}
Spectrum analyzer 16 kHz analog input
9 | RST
oO | PD
RESET output for display IC (CXP2201)
Doabeer
O
| CLK3
O
| CLOCK output for display IC (CXP2201}
1]
S|
O
DATA output for display IC (CXP2201)
(22
[68
O | PU
CHIP SELECT output for display IC (CXP2201)
US OFF
13
| VLED
O | PU
VOLUME LED output
Beaty
14
;_011
O
GE IC (LC7522) DATA output terminal
'oe
15 | CLK1
0
GE IC (LC7522) LOCK output terminal
ane
16
ST
O
SEL IC strobe output
pare
17
| DT
Of.
SEL IC DATA output
ae)
PROTECTION detection terminal
PONORMAL. ON
Motor volume control output DOWN
Prone
VUP
O | PD
Motor volume control output UP
= OFF
22 | SPEAKER
O | PD
Speaker relay
oor
24 | TMUTE
oO | PD
TUNER MUTE output
La OFF
Remote control input
LO
26 | CE BACK UP
| | PU
AC OFF detection input
UAC OF
27 | RESET
PU
Reset terminal
CoARSer
28
XCIN
Oscillation terminal for clock 3200 Connect crystal oscillator
29
XOUT
O
Oscillation terminal for clock
| Connect 3200 MHz crystal oscillator
30
XIN
MAIN CLOCK oscillation terminal
Connect 6.3 MHz ceramic oscillator
32
| VSS
GND terminal
Connect with GND
33
CL (PLL)
CLOCK terminal for PLL (LC7218)
34
DI (PLL)
DATA output for PLL (LC7218)
Sbn
CE (PEL
PLL (LC7218) CE control output
Co beacke
36
DO
PLL IF COUNT
input terminal
37
| ST
TUNER STEREO input
Loarenes
38
| SD
TUNER SD input
TUNED oS
39
| SDATA
170 | PD
DATA input/output for system control
10
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