Silicon Laboratories M88, User Manual

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M88 Evaluation Kit User Guide Additional connectors
STO-DEV7227-HB Rev. 2.1 13
Name Type Description
J201 14-pin Micro-MaTch female Debug port for connection to
Silicon Labs'
Trace Adapter .
Please
note polarity when connecting.
P502 6-pin header COM2. P502 is wrongly marked COM_0 on early PCB versions.
P503 6-pin header COM1
P508 10-pin header CB Pro FP interface for the Si5348 on M88
P509 10-pin header SPI MASTER. Connect a SPI slave here
P510 10-pin header SPI SLAVE. Connect a SPI master here
P507 10-pin header I/O BUS with Port F and MIRQ1
P501 14-pin header, 2 mm pitch Reserved
P506 10-pin header PLL Control
P504 16-pin header, 2 mm pitch System connector GNSS add-on board
P1001 16-pin header, 2 mm pitch System connector Oscillator add-on board
Table 3. M88 Evaluation Kit board-top connector description.
9.1 Connector pin descriptions
9.1.1 COM2
Pin Signal Comment
1 GND
2 NC
3 NC
4 URX2
5 UTX2 Pull-up
6 NC
Table 4. COM2 connector pin description
9.1.2 COM1
Pin Signal Comment
1 GND
2 URTS1 Pull-up
3 NC
4 URX1 Jumper P505 decides if RX for COM1 is taken from here or from the GNSS add-on
board system connector P504.
5 UTX1 Pull-up
6 UCTS1
Table 5. COM1 connector pin description