User Manual

Redpine Signals, Inc. Page 8
Connect
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RS9110-N-11-24
Evaluation Board User Guide
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1
1
3
3
USB Connector for Power
The power for the board can be supplied through this connector.
UART Header for MCU
If the EVB needs to be connected to the serial interface of an MCU platform, this
header can be used. The voltage level of the UART TX and RX pins of this header
is 3.3V. The Ground pin should be connected to a corresponding ground signal of
the MCU board.
Pin
number
Pin
name Direction Description
1
NC
-
This pin must be left
unconnected
2
NC
-
This pin must be left
unconnected
3
NC
-
This pin must be left
unconnected
4
UART
-
RX
Input
UART RX pin of the
module
5
UART
-
TX
Output
UART TX pin of the
module
6
NC
-
No connect
7
NC
-
No connect
8
GND
-
Ground
9
GND
-
Ground
10
GND
-
Ground
Table 1: UART Header Pins
SPI Header
The SPI header is used to connect the SPI interface of the module to a Host
MCU. The pin configuration of this header is as follows:
Pin
number Pin name Direction Description
1
NC
-
No connect
2
SPI_CS
Input
SPI sl
ave select
3
GND
-
Ground
4
VCC
-
3.3V power supply. If
the USB port for power
supply is not used, this
pin can be used to drive
power to the EVB from
the Host MCU platform.
The maximum current