AVT MAGIC AD1 ETI, Hardware Manual

Page: 85 / 106

PAGE 85
I n t e r f a c e s
A2.2.3 X.21 interface
NOTE
This interface is not supported in the MAGIC AD1 ETI Decoder.
TAB. 5 PIN ASSIGNMENT: X.21 INTERFACE
Connector: SUB-D 15 pole
Pin Signal Direction Electrical characteristics
1 shield Type: DCE with
Gender
Changer
Level: V.11, symmetric
Data rates: 8, 16, 24, 32,40, 48,
56, 64, 80, 96, 112, 128,
144, 160, 192, 224,256,
320, 384-kbit/s
Maximum cable length: 100 m
2 TX a Transmit Data a
input
3 CTL a Control a
input
4 RX a Receive Data a
output
5 IND a Indication a
output
6 SCLK a Signal Element Timing a
output
7 BCLK a
a
Byte Timing a
a
usually it will not be used
output
8 GND Ground
9 TX b Transmit Data b
input
10 CTL b Control b
input
11 RX b Receive Data b
output
12 IND b Indicate b
output
13 SCLK b Signal Element Timing b
output
14 BCLK b
a
Byte Timing b
output
15 not used
8 1
15 9