SYSTEM CONNECTOR INTERFACE
37
LZT 123 8020 R1A
T
PCMCLK
PCM clock period with 50/50 mark space ratio
5
µs
F
PCMSYN
PCM sync frequency
8
kHz
Typical Rise/Fall times
Rise Time
Fall Time
Unit
PCMCLK
19
18
ns
PCMSYN 19
15
ns
PCMOUT
900
900
ns
PCMDLD 20
19
ns
5.9 Serial Data Interfaces
Pin Signal
Dir Description
RS232
CCITT
41
TD
I
Serial data to radio device (UART1)
103
42
RD
O
Serial data from radio device (UART1)
104
39
RTS
IO9
I
I/O
Request To Send (UART1)
General purpose input/output 9
105
40 CTS
O4
O
O
Clear To Send (UART1)
General purpose output 4
106
37
DTR
IN1
I
I
Data Terminal Ready (UART1)
General purpose input 1
108.2
32 DSR
O3
O
O
Data Set Ready (UART)
General purpose output 3
107
38
DCD
O1
O
O
Data Carrier Detect (UART1)
General purpose output 1
109
36 RI
O2
O
O
Ring Indicator (UART1)
General output 2
125
45
TD2
I
Transmitted Data (UART2)
46
RD2
O
Received Data (UART2)
43
TD3
I
Transmitted Data (UART3)
44
RD3
O
Received Data (UART3)
The serial channels, consisting of three UARTs, are
asynchronous communication links to the application or
accessory units.
•
UART1 has RS-232 functionality and is used for all on- and
off -line communication.
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