Lantronix MatchPort b/g, Руководство по интеграции

Страница: 10 / 29

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