Lantronix MatchPort b/g MatchPort b/g - Integration Guide - Page 10

Serial Input/Output, MatchPort b/g, DCE Connector, MatchPort, b/g Signal, logic, Description, RS485

Page 10 highlights

2: Description and Specifications Figure 2-3. U.FL to U.FL Cable (P/N 500-181-R) Note: The antenna cable is included in the MatchPort b/g sample. For production, it can be purchased from Lantronix or a cable supplier. Serial Input/Output The unit has two serial ports compatible with RS232 serial standards at data rates up to 921 Kbps. The serial I/O signals are 3.3V CMOS logic level and pins are 5V tolerant. Serial signals connect to the OEM CPU/UART. For evaluation and prototype work, it is convenient to have an external RS-232 interface that can connect to the serial port on a PC. The MatchPort Demo Board has RS-232/422/485 transceivers to implement this external interface. If desired, use the CPs to create a DTE or DCE-style interface using any three available CPs. To create these interfaces, connect the signals according to Table 2-2 and Table 2-4. Note: CPx, and CPy are any of the available CPs. Table 2-2. RS232 Connections MatchPort b/g Signal Description (Logic) RXDx Data In TXDx Data Out RTSx H/W Flow Control Output CTSx H/W Flow Control Input CPx Modem Control Input CPy Modem Control Output DCE Connector DB9 DB25 2 3 3 2 7 4 8 5 1 8 4 20 Signal RXDx TXDx RTSx CTSx DCDx DTRx DTE Connector DB9 DB25 3 2 2 3 8 5 7 4 4 20 1 8 Signal TXDx RXDx CTSx RTSx DTRx DCDx Table 2-4. JP6 RS422/485 Connections MatchPort b/g Signal (logic) TXD1 TXD1 RXD1 RXD1 RTS1 CP3 CP4 Description Data Out Data Out Data In Data In TX Enable RS485 Select RS485 2-wire RS485 JP6 DB25 DB25 Signal Pin 4 2 Wire Wire TX+485 4 14 14 TX-485 3 15 15 RX+485 2 21 14 RX-485 1 22 15 DB9 DB9 4 wire 2 wire 7 7 3 3 2 7 8 3 MatchPort b/g Integration Guide 10

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2: Description and Specifications
MatchPort b/g Integration Guide
10
Figure 2-3. U.FL to U.FL Cable (P/N 500-181-R)
Note:
The antenna cable is included in the MatchPort b/g sample. For
production, it can be purchased from Lantronix or a cable supplier.
Serial Input/Output
The unit has two serial ports compatible with
RS232
serial standards at data rates
up to 921 Kbps. The serial I/O signals are 3.3V CMOS logic level and pins are 5V
tolerant. Serial signals connect to the OEM CPU/UART. For evaluation and prototype
work, it is convenient to have an external RS-232 interface that can connect to the
serial port on a PC. The MatchPort Demo Board has RS-232/422/485 transceivers to
implement this external interface.
If desired, use the CPs to create a DTE or DCE-style interface using any three
available CPs. To create these interfaces, connect the signals according to Table 2-2
and Table 2-4.
Note:
CPx, and CPy are any of the available CPs.
Table 2-2. RS232 Connections
MatchPort b/g
DCE Connector
DTE Connector
Signal
(Logic)
Description
DB9
DB25
Signal
DB9
DB25
Signal
RXDx
Data In
2
3
RXDx
3
2
TXDx
TXDx
Data Out
3
2
TXDx
2
3
RXDx
RTSx
H/W Flow Control
Output
7
4
RTSx
8
5
CTSx
CTSx
H/W Flow Control Input
8
5
CTSx
7
4
RTSx
CPx
Modem Control Input
1
8
DCDx
4
20
DTRx
CPy
Modem Control Output
4
20
DTRx
1
8
DCDx
Table 2-4. JP6 RS422/485 Connections
MatchPort
b/g Signal
(logic)
Description
RS485
Signal
JP6
Pin
DB25
4
Wire
DB25
2
Wire
DB9
4 wire
DB9
2 wire
TXD1
Data Out
TX+485
4
14
14
7
7
TXD1
Data Out
TX-485
3
15
15
3
3
RXD1
Data In
RX+485
2
21
14
2
7
RXD1
Data In
RX-485
1
22
15
8
3
RTS1
TX Enable
CP3
RS485 Select
CP4
RS485 2-wire