Cpu (F: Ic401) Port Allocations - Icom IC-F50V Service Manual

4-6 CPU (F: IC401) PORT ALLOCATION
Pin Line
No. name
1–
SEG23–13
11
13 SEG12 LCD segment ports.
15–
SEG11–1
25
Serial data to DAC (M: IC6) and
26 SO
audio strage IC (M: IC18).
Serial clock to DAC (M: IC6) and
27 SCK
audio strage IC (M: IC18).
28 MDIO Data I/O for baseband IC (M: IC10). I/O
29 MSCK Clock to the baseband IC (M: IC10).
Chip select signal to the Voice
30 SS
strage IC* (M: IC18).
31 PLST Strobe signal to the PLL IC (M: IC4). O
Serial data to DAC and voice strage
32 SDA
IC* (M: IC18).
Serial clock to DAC (M: IC6) and
33 SCL
voice strage IC* (M: IC18).
Interupt signal to voice strage IC* (M:
34 INT
IC18).
35 EXSF Strobe to the expander (F: IC410).
36 EXSM Strobe to the expander (M: IC12)
O u t p u t e n a b l e s i g n a l t o t h e
37 EXOE expander ICs (F: IC410 and M:
IC12).
38 BEEP Beep sounds.
D a t a ( M S K T X d a t a ) t o t h e
39 MTDT
baseband IC (M: IC10).
C l o c k ( f o r M S K T X d a t a ) t o
40 MTCK
baseband IC (M: IC10).
41 NOISE Noise level from FM IF IC (M: IC1).
43 SDEC Tone signals (DTMF, 2/5tone).
44 CDEC CTCSS/DTCS signals.
VOX detect.
45 VOXV
"High"=start to transmit.
Key input for [UP], [P0] and [P3]
46 KR1 keys.
(Pulled up)
Key input for [DOWN], [P1] and [P2]
47 KR0
keys. (Pulled up)
48 BATV Battery volatge for monitoring.
49 LVIN Lock voltage for monitoring.
RSSI voltage from FM IF IC (M:
50 RSSI
IC1).
Voltage divided by thermal register
51 TEMP (M: R190) and R191. (temperature
monitor)
Optional unit detect.
52 OPTV
"High"=An optional unit is connected.
PLL unlock signal from IC4.
55 UNLK
"Low"=PLL is unlocked.
Reset signal from the reset IC (F:
59 RES
IC408).
Beep sound level control signal to
68 BPMAX BEEP SW (F: Q415).
"Low"=Maximum beep sound level.
Row address clock to the Voice
69 RAC
strage IC* (M: IC18).
*; [C], [F], [I], [L] only
Description I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
I
O
O
Pin Line
No. name
[PTT] key (F: S401).
70 PTT
(Pulled up)
Serial data I/O control signal to the
71 MDIR
baseband IC (M: IC10).
72– SENC3–
2/5 tone, DTMF signals.
75 SENC6
MSK data RX flag/flame detect
78 MRDF
signal to the baseband IC (M: IC6).
79– CENC0–
CTCSS/DTCS signals.
81 CENC2
82 DAST Strobe signal to the DAC (M: IC6).
88– COM4–
LCD common terminals.
91 COM1
92–
SEG32–24 LCD segment ports.
100
4 - 8
Description I/O
I
O
O
O
O
O
–
O