Icom IC-R100 Service Manual page 14

(2) OUTPUT PORT
PORT | PORT PIN |
NUMBER | NAME | NUMBER DESCRIRHON
Р00-- DAO~ 14~18 | Output D/A converted
P04 DA4 signals which control the
frequency for lower 10 kHz
unit.
POS шы Тһе port becomes "HIGH"
ишан when АМ mode is selected.
85 Outputs a strobe signal for
the PLL IC chip.
SSTB Outputs a strobe signal for
the sub CPU.
when FM mode is
selected.
The port becomes "HIGH"
when МЕМ mode is
selected.
The port becomes "HIGH"
square vvaves used as a
beep tone.
Outputs a pulse of 15џ5ес.
vvidth vvhen the CPU is reset.
Output band control
signals. See the table
shovvn in the section.
The port becomes "HIGH"
when the [PRE/ATT] switch
is pushed опсе.
Outputs serial clock
Signals.
Outputs serial даѓа.
= |
SRST
Outputs 1 kHz or 500 Hz
јаз
The port becomes "НІСН"
when the ГРВЕ/АТТ) switch
is pushed tvvice.
The port becomes "HIGH"
when the [PUSH-ON/VOL]
Switch is ON.
The port becomes "HIGH"
when the [AFC - ANL] switch
is ON.
The port becomes "HIGH"
when the [DIM] switch is
The port becomes "LOW"
when the AGC is set to FAST
in scanning operation.
4-6-2 SUB CPU PORT ALLOCATIONS
PORT PORT PIN
NUMBER | МАМЕ
| NUMBER
DESCRIPTION
When the port becomes
"LOW," the CPU enters the
backup mode.
Input port for serial clock
signals. ы. cum
EE
ЊЕ
Input port for serial data.
Input port for a strobe signal.
This port becomes "HIGH"
every one second.