6-13
Pin
No.
Pin Name
Signal
Name
I/O
Description
Input
Type
Output
Type
46
+5VA
+5VA
PWR Connect to 5V power
47
OVA
GND
GND Connect to analog OV ground
48
AGD
R
+2.5 analog ground
49
AOUT
R
Smoothing filter output
50
OVD1
GND
GND Connect to digital ground
51
NC
No connection
52
/IRQ1
/MIRQ
O
Interrupt request
OC
53
/WRITE
/WR
I
Write enable
IA
54
/CS
/MCS
I
Chip select
IA
55
/READ
/RD
I
Read enable
IA
56
RS4
A4
I
Register select 4
IA
57
RS3
A3
I
Register select 3
IA
58
RS2
A2
I
Register select 2
IA
59
RS1
A1
I
Register select 1
IA
60
RS0
A0
I
Register select 0
IA
61
GP13
BYPASS
I/O
General purpose I/O
IA
OB
62
+5VD1
VDD
PWR Connect to d5V power
63
GP11
MUTE
O
General purpose input/output
IA
OB
64
/RTS
I
Request to send
IA
65
/EN85
I
Enable 8085 bus
IA
66
OVD2
GND
GND Connect to digital ground
67
/PORI
/MRST
I
Power-on-reset input
ID
68
XTLI
R
Connect to Crystal/Oscillator
69
XTLO
R
Connect to Crystal/Oscillator
70
XCLK
SYSCLK
O
19MHz output
OD
71
YCLK
O
9.5MHz output
OD
72
+5VD1
VDD
PWR Connect to d5V power
73
DCLKI
DCLK
R
Connect to DCLK
74
SYNCIN2
SYNCIN1
R
Connect to EYESYNC
75
GP16
I/O
General purpose input
IA
OB
76
GP17
I/O
General purpose input
IA
OB
77
OVD2
GND
GND Connect to digital ground
78
/CTS
O
Clear to send
OA
79
TXD
I
Transmit data
IA
80
OVD2
GND
GND Connect to digital ground
81
OVD2
GND
GND Connect to digital ground
82
DCLK
/IRQ2
O
Transmit and receive data clock
OA
83
EYESYNC
O
Serial eye pattern strobe (9600Hz)
OA
84
EYECLKX
O
Serial eye pattern clock
OA
85
EYECLK
O
Serial eye pattern clock
OA
86
EYEX
O
Serial eye pattern X output
OA
87
ADIN
R
Connect to ADOUT
88
DAOUT
R
DAC/AGC output
89
OVD2
GND
GND Connect to digital ground
Summary of Contents for TF-300P
Page 1: ...I TF 300P Field Service Manual Ver 02 July 8 1999 TTIC...
Page 12: ...1 7 1 3 General Appearance 1 3 1 Appearance 1 3 2 Show the operation panel...
Page 84: ...7 23 Check the status of C24 C25 C26 R32 R34 L11 and L12 Check the Microphone inside handset...
Page 100: ...9 1 9 MECHENICAL DRAWING AND PARTS LIST...
Page 101: ...9 2...
Page 102: ...9 3...
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Page 116: ...10 1 10 CIRCUIT DRAWING...
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