SEMICONDUCTOR
DATA
Microprocessor: M38267M8L156GP (TX-RX Unit IC409)
• Terminal connection diagram
TK-760/762
512
511
510
59
58
57
56
55
54
53
52
51
50
VDD
VREF
COM2
COM1
COMO
VL3
VL2
VL1
• Terminal function
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
Q_N(V')'<:tLn<Dr---comO"-NM'<:tlt)
..-N(V')'<:tLO«)t---oom..-..-..-..-..-..-..-..-..-..-NNNNNN
PA
55C
KM20
5ELF
D/A
MON
AUX
5CN
VLDN
VLUP
AHK
APn
V55
XO
XI
XCO
XCI
R5T
5MDI
WIN
MONG
CH1R/TE5T
CH1G
ECK
EDT
Pin
No.
Port
Name
I/O
Function
1
LD
I PLL lock detect. "L": Unlock,
"H"
: Lock
2
BUSY I Nor used.
3
BIAS I OT/DOT center
voltage input.
4
TI
I OT/DOT signal input.
5
AUXR
0
AUX
LED
(red).
"L": On,
"H"
: Off
(TK-762
only)
6
AUXG
0
AUX
LED
(Green). "L": On,
'H'
: Off
(TK-762
only)
7
CH2R
0
CH2
LED
(red).
"L": On,
"H"
: Off
(TK-762
only)
8
CH2G
0
CH2
LED
(green).
'L":
On,
"H"
: Off
(TK-762
only)
9
FSW
0
TX
sense. "L":
PTI
off,
"H"
:
PTI
on
10
DTMF
0
DTMF output.
11
2TN
I 2-tone input.
12
SOL I Squelch noise pulse input.
13
CHDN I
CH
down. "L":
On,
"H"
: Off
14
CHUP I
CH
up.
"L":
On,
"H"
: Off
15
2/32 I
CH
version.
'L":
32ch,
"H"
: 2ch
16
TO
0 OT/DOT PWM output.
17
PTI
I/O
Normal microphone PTI. "L":
On,
"H"
: Off / DTMF microphone: serial interface.
18
HK
I
Microphone hook. "L":
On
hook, 'H" : Off hook
27
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