Clarion ARB1370E - Page 3

EXPLANATION OF IC
HILC72323A-9281 052-1909-00 System Controller
Function
Outward Form
Cc ts GND
80
pins,
plastic
QFP
onnects
Outputs for phase modulator
Terminal Description
a eae N.C. (OPEN)
No. Symbol ite) Function
‘0 y ‘unctio’ N.C. (GND)
1 | X'TALIN { | Connects X-TAL 4.5 MHZ
X' TAL OUT 1 | Connects X-TAL 4.5 MHZ
2 | NC. - | N.C. (OPEN)
3 | FM ST IND I | Inputs Low in FM
a
I | Detects AM signal
~
> = wa o
5 [esp
clus [rfxcom SS
8 | AM +B Outputs Low in AM +B
9 |] AMUTE Outputs Low in AUDIO MUTE ON
10 | FM DX/LO O | Outputs Hi in FM DX
«| N.C. (GND)
Inputs Low in TAPE mode
Inputs Low in TAPE mode, FOR . Inputs Hi in TAPE
mode, REV.
Zz is)
I
m
w 7) | 2 a
Lest <
|
Nv =| > a ies)
_
14 | FF/REV Inputs Low in TAPE mode, FF/REW
wibiaio fo
fo[xcormo
19 | E-DO O | Outputs DATA for E-VOL
20 | E-CLK O }{ Outputs E-VOL for CLOCK
Nn IF REQ
Inputs Hi in RADIO SEEK
|
Ww
Zz
se)
O | N.C. (OPEN)
24 | REM +B O | Outputs Hi in REM +14V ON
25
6 N.C. Fo | N.C, (OPEN)
27 | KS3
28 | KS2
29 | KS 1 O | Key scan output
30 | KSO
31 | VDD - | VDD SV power supply
32 | KI3
33 | KI2 ;
34} KI I | Key scan input
35 | KIO
36
|
N.C.
Oo
37
|
NC.
~
|
N.C.
(OPEN)
Outputs LCD segment control
Displays COM2 on LCD
Displays COM! on LCD
N.C. (GND)
Inputs Hi in ACC ON
1 Connects VDD
Setup terminal
I | Inputs AM IF
I | Inputs RESET circuit
VDD 5V power supply
gees ee
-3-
AR31370E