Icom ID-800H, Руководство по обслуживанию, Страница: 21 / 59

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4-6-2 D/A CONVERTER IC PORT ALLOCATIONS
(MAIN UNIT; IC11)
Pin
number
Port
name
Description
2–4
TUNE_V1–
TUNE_V3
Output the VHF bandpass filters
(D22, D23, D29, D41) tuning signals.
5
TUNE_U
Outputs the UHF bandpass fi lter (FI4)
tuning signal.
6 ATT
Outputs the receiving attenuator con-
trol signal.
7 BSHIFT
Outputs the bandpass fi lter shift con-
trol signal.
8 PCON_V
Outputs the VHF output power con-
trol signal.
9 PCON_U
Outputs the UHF output power con-
trol signal.
12 TUNE_8
Outputs the 800MHz bandpass fi lter
tuning signal.
13
REF_CON
Outputs the reference oscillator con-
trol signal.
4-6-3 MODEM IC PORT ALLOCATION
(CODEC BOARD; IC252)
Pin
number
Port
name
Description
2 MCLK
Outputs 2.4576 MHz clock signal to
the AMBE voice CODEC IC (IC151,
pin 39).
7 ACQ
Outputs the PLL bandwidth control
signal while receiving.
19 TXDT
Outputs transmitting data signal to
the CODEC CPU (IC204, pin 54).
20 RXDT
Input port for receiving data signal
from the CODEC CPU (IC204, pin
53).
21 RXCK
Input port for receive clock signal
from the CODEC CPU (IC204, pin
52).
22 TXCK
Outputs transmit clock signal to the
CODEC CPU (IC204, pin 51).
4-6-4 SUB CPU PORT ALLOCATIONS
(CONTROL UNIT; IC6)
Pin
number
Port
name
Description
1 BAND
Input port for [BAND•MODE].
Low:
While [BAND•MODE] is
pushed.
3
COL_A
Outputs the LCD backlights (DS21,
DS22) control signal.
High:
W h i l e a m b e r o r ye l l o w
backlights are selected in
the set mode.
4 SMW
Input port for [S.MW•MW].
Low:
While [S.MW•MW] is pushed.
5 TONE
Input port for [TONE•T-SCAN].
Low:
While [TONE•T-SCAN] is
pushed.
6 LOW
Input port for [LOW•DUP].
Low:
While [LOW•DUP] is pushed.
7 MONI
Input port for [MONI•DTMF].
Low:
W h i l e [ M O N I • D T M F ] i s
pushed.
8 SET
Input port for [SET•LOCK].
Low:
While [SET•LOCK] is pushed.
24 M/CALL
Input port for [M/CALL•PRIO].
Low:
While [M/CALL•PRIO] is
pushed.
25 VMHz
Input port for [V/MHz•SCAN].
Low:
While [V/MHz•SCAN] is
pushed.
30, 31
DIAL_A,
DIAL_B
Input ports for control signals from
the main dial.
83 COL_G
Outputs the LCD backlights (DS21,
DS22) control signal.
High:
While green or yellow back-
lights are selected in the
set mode.
86 PWR
Input port for [PWR].
Low:
While [PWR] is pushed.
88 VOL Input port for [VOL].
89 SQL Input port for [SQL].