User guide

CM52 Integrators’ Manual
CM52 Integrators’ Manual
WI_DEV_CM52_UGD_001-001
Page 20 of 53
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Pin Signal Description Dir Pin Type Alternate
Function
Dir Pin
Type
25 CTS Clear to send O CMOS
26 DTR Data Terminal Ready I CMOS
27 TD Transmit data, also known as DTMS I CMOS
28 RTS Request to Send I CMOS
29 VCC_AUX 13.8 VDC supply input I Power
30 RD Receive data, also known as DFMS O CMOS
31 VCC_AUX 13.8 VDC supply input I Power
32 VCC_AUX 13.8 VDC supply input I Power
33 VCC_MAIN 5 VDC regulated supply I Power
34 VCC_MAIN 5 VDC regulated supply I Power
35 SDA_SPI_IN Reserved CMOS SDA_SPI_IN IO
36 SCL_SPI_CLK Reserved CMOS SCL_SPI_CLK IO
37 SYS_DTM_2 Transmit Data for UART2 I CMOS GPS TX Data
1
I
38 SPI_OUT Reserved CMOS SPI_OUT IO
39 SYS_DFM_2 Receive Data for UART2 O CMOS GPS RX Data
1
O
40 RI Ring Indicator O CMOS
Table 3: Pin-out of the System Connector Header