Icom IC-R7000 Service Manual page 19

(a) Y1--+ D80-D83 (KEYBOARD, MEMORY-CH ENTER)
Following is a matrix for the KEYBOARD, MEMORY-
CH ENTER and the optional RC-12 WIRELESS
REMOTE CONTROLLER.
~
DBO DB1 DB2 DB3
HEX
y CODE
1 H L
L
L 1
2 L H L L
2
3 H H L L
3
4
L L H L
4
5 H L H
L 5
6 L H H L 6
7 H H H L 7
8 L L L H
8
9 H L L H
9
0 L H L H A
*1
MEMORYCH
ENTER
H H L H B
•
L L H H
c
ENT H L H H D
*2
CE L H H H E
*1: Used in [MEMORY CH] CONTROL.
*2: Used in the optional RC-12 WIRELESS REMOTE
CONTROLLER.
Table 5
(b) Y1--+ D84 (DIAL UP/DOWN)
When a TUNING CONTROL clock signal is input, the
following results will occur.
Y1--+ 084 RESULT
H The receive frequency inceases.
L The receive frequency decreases.
Table 6
(c)
Y1 --+ D85-7 [TS]
This matrix sets frequency steps.
~
DB5 DB6 DB7
T
0.1 kHz L L L
1kHz H L L
5kHz L
H L
10kHz
H
H L
12.5kHz L L H
25kHz H L H
Table 7
(d)
Y3--+ DB0-1 (FREQUENCY UP/DOWN)
This matrix increments receive frequencies for the
optional RC-12 WIRELESS REMOTE CONTROLLER.
(e)
Y3--+ DB2 (SQUELCH STOP)
This matrix stops the scan when the squelch opens.
(f) Y4--+ D86-7 [SCAN·DELAY]
This matrix sets the scan delay time.
~
DB6 DB7
G
OFF H L
5 (seconds) L H
15 (seconds) H H
oo
(infinity) L
L
Table 8
(g)
Y6 --+ DB0-4 (Cl·V ADDRESS)
This matrix sets the address for the *Cl-V. The
desired address for IC-R7000 may be 1 to 31 and
consists of 5 bits.
*Cl-V: ICOM Communication lnterface-V.
(h)
Y6 --+ DB5 (Cl·V TRANSCEIVE)
This matrix sets the transceive operation for the Cl-V.
(i) Y6--+ DB6-7 (Cl·V BAUD RATE)
This matrix sets the baud rate.
~
DB6
T
76800 L
9600 H
1200 L
300
H
Table 9
LOGIC
UNIT J17
DB7
L
L
H
H
DB7•D181'4111
DB6 •D171'411!
DB5 •D161'4111
DB4 ,D151'411!
DB3 ,D141'4111
DB2 • D13
1' 4 111
DB1 • D121'4111
~
BAUD (1200BAUD)
PS
0 0
~
TRANSCEIVE (ON)
P7
0 0
rBJ
P6
0 0
0 0
DBO
1
D
11
1' 4 111
0 0
Fig.10
4.4.3 CPU RESET CIRCUIT
ADDRESS (08)
The CPU reset circuit detects the power supply voltage
to reset the CPU.
13.BV
IC7
Fig. 11
4-9