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Renesas M3A-HS19 用户手册

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Operational Specifications 
3.1.3 RS-422 Connector Pin (J3) 
Rev.1.01  Oct.28.2008 
3-5
REJ10J1351-0101  
 
 
 
3 
3.1.3  RS-422 Connector Pin (J3) 
 
The M3A-HS19 is provided with an RS-422 connector pin (J3). 
Figure 3.1.4 shows the pin assignment for the RS-422 connector pin (J3). 
 
 
Top view of the 
component side
Board edge
Top view of the
solder side
1
2
3
4
4
3
2
1
J3
RS-422
Board edge
 
 
Figure 3.1.4 Pin assignment for RS-422 Connector Pin (J3) 
 
Table 3.1.3 lists the pin assignment for the RS-422 connector pin (J3). 
 
Table 3.1.3 Pin assignment for RS-422 Connector Pin (J3) 
Pin no. 
Signal Name 
Pin no.
Signal Name 
1 RXD-a 
(PD3/IRQ3/RXD1/DACK0) 
3 TXD-z 
(PD2/IRQ23/TXD1/DREQ0) 
2 RXD-b 
(PD3/IRQ3/RXD1/DACK0) 
4 TXD-y 
(PD2/IRQ23/TXD1/DREQ0)