User guide

M80 EVB User Guide
M80_EVB_UGD_V1.2 - 27 -
Table 10: Pins of Auxiliary UART
Note: The above pins are RS232 voltage level.
Table 11: Pins of debug UART
Note: The above pins are RS232 voltage level.
The CMOS level of UART signal can be test through the test points below. Customer can use
these test points to verify the design between customer device and the module.
Figure 27: Test points of Auxiliary and Debug port
Pin
Signal
I/O
Description
Note
1_2
TXD_AUX
O
Transmit data
1_3
RXD_AUX
I
Receive data
1_5
GND
Ground
Pin
Signal
I/O
Description
Note
2_2
DBG_TXD
O
Transmit data
2_3
DBG_RXD
I
Receive data
2_5
GND
Ground
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