Harman Kardon HK3400 - Page 25

IC BLOCK DIAGRAM /IC TERMINAL FUNCTIONS
IC701 : TC9301AN-027 Micro Computer
mle alr or
OIG .GENE.
REFERENCE OIVIDER
AAM
(4x12B WORD)
CPU TIMING GENE.
P2-4
P2-2
P2-3 P2-4
pI-4
MUTE
(23) P3-2
GM)
ate
a
4
a
(2)
i
TI
POWER ON
RESET
ole
INT
ROM
(46x2048 STEP)
STACK REG
(1Ig 9t) “S30 VLVO
vO] Funation
D
| — | :
Ea . :
i
Cr [ait key input pon —_—|
Fo |oigit output
Digit output
=)
oO
rE!
|
9
/O [Digit output
(0 [Digit output
[0 [Segment output
| [Segment output
[0 [Segment output
Fea
Ea
Oo
Ea
:
w
on
Negative power terminal (4-bit
key input port, digit output, seg-
ment output)
~
GN
KO
K1
K2
K3
D1
D2
D3
Cc
f
h
—VFL
N —_—
Pin_No.|Pin Name |1/0|
4-bit /O port (3)
VO | 4-bit VO port (3)
Serial interface (strove pulse output)
R
4-bit /O port (3)
Ta [| O
| ck | 01 Serial interface (serial clock output)
| so fo) Serial interface (serial data output)
| st | 1 | Serial interface (serial data input)
EF Reference frequency signa! out-
put terminal
INT Initialize input (system reset sig-
nal input terminal)
Inhibit input (select signal input
port of radio mode)
XT | — | Connect quartz oscillator
|
Vop
foe
||
Connect
quartz
oscillator
|
Voo
ft
Power
supply
terminal
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