Raisecom
RC3000-15 (P100R001) Hardware Description
9 Asynchronous data cards
Raisecom Proprietary and Confidential
Copyright © Raisecom Technology Co., Ltd.
129
Table 9-15
Parameters of the 8RS485 interface
Parameter
Description
Connector type
RJ45
Collection
frequency
64 kHz, 128 kHz, 256 kHz, 512 kHz, 1 MHz, and 2 MHz
The corresponding interface bandwidth: 64 kbit/s, 128 kbit/s, 256
kbit/s, 512 kbit/s, 1024 kbit/s and 2048 kbit/s
Interface rate
The interface rate is related to the collection frequency:
The interface rate is up to 9.6 kbit/s when the collection frequency is
64 kHz.
The interface rate is up to 19.2 kbit/s when the collection frequency is
128 kHz.
The interface rate is up to 38.46 kbit/s when the collection frequency
is 256 kHz.
The interface rate is up to 57.6 kbit/s when the collection frequency is
512 kHz.
The interface rate is up to 115.2 kbit/s when the collection frequency
is 1 MHz.
The interface rate is up to 460.8 kbit/s when the collection frequency
is 2 MHz.
Compliant
standard
Complying with interface standards of RS485 and RS422 protocols
Interface PINs
Table 9-16 lists PIN definitions of the RS485 interface.
Table 9-16
PIN definitions of the RS485 interface
Interface
figure
Type
PIN
1
2
3
4
5
6
7
8
RS485
half
duplex
DATAP
DATAN
–
–
–
–
–
–
RS422
full
duplex
TXP
TXN
RXP RXN
–
–
–
–
To configure the interface to RS485 half duplex, connect PINs 1 and 2 only.
To configure the interface to RS422 full duplex, connect PINs 1, 2, 3, and 4 only.
