NXP Semiconductors EVB912UF32, Руководство пользователя, Страница: 32 / 44

EVB912UF32 Evaluation Board- Rev 1 User’s Manual
26 Support Information MOTOROLA
Support Information
3.8 UART Connector
Connector J31 is the EVB912UF32 RS-232 serial connector. Figure 3-8 gives
the pin assignments and Table 3-7 gives the signal descriptions for this
connector.
Figure 3-8 J31 RS232 Serial Connector Pin Assignments
*
The outputs are not driven or controlled on this board. Connect DCD to DTR
using W17, DSR to DTR using W14, and CTS to RTS using W15 to have these
outputs driven by these inputs (loopback connections).
1
R
X
D
T
X
D
N
C
C
T
S
R
T
S
D
S
R
J31
2 3 4 5
9 8 7 6
D
T
R
G
N
D
D
C
D
Table 3-7 Connector J31 Signal Descriptions
Pin Mnemonic Signal
1 DCD DATA CARRIER DETECT — RS232 output*
2 TXD TRANSMITTED DATA — RS232 serial data output signal
3 RXD RECEIVED DATA – RS232 serial data input signal
4 DTR DATA TERMINAL READY — RS232 input*
5 GND GROUND
6 DSR DATA SET READY — RS232 output*
7 RTS READY TO SEND — RS232 input*
8 CTS CLEAR TO SEND — RS232 output*
9 NC Not Connected