National Instruments roboRIO, Руководство пользователя

Страница: 9 / 31

Table 3.
MXP Signal Descriptions (Continued)
Signal Name Reference Direction Description
UART.RX DGND Input UART receive input. UART lines are
electrically identical to DIO lines.
UART.TX DGND Output UART transmit output. UART lines are
electrically identical to DIO lines.
DGND — — Reference for digital signals, +5 V, and +3.3 V.
CAN Port
The following figure and table describe the CAN port pins and signals.
Figure 5.
CAN Port Pinout
H (YEL)
L (GRN)
Table 4. CAN Port Signal Descriptions
Signal Name Direction Description
L (GRN) Input/Output CAN bus differential low signal.
H (YEL) Input/Output CAN bus differential high signal.
Note The NI roboRIO contains an internal 120 Ω termination resistor between L
(GRN) and H (YEL).
I
2
C Port
The following figure and table describe the I
2
C port pins and signals.
Figure 6. I
2
C Port Pinout
3.3V
SCL
SDA
NI roboRIO User Manual | © National Instruments | 9