MSI IM-GM45 User Guide - Page 33

SPI Flash ROM Connector: JSPI1, RS-232 Serial Port Connector: COM2 ~ COM5

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Hardware Setup RS-232 Serial Port Connector: COM2 ~ COM5 This connector is a 16550A high speed communications port that sends/receives 16 bytes FIFOs. You can attach a serial device to it through the optional serial port bracket. COM2/3/4/5 10 9 2 1 Pin Definition PIN SIGNAL DESCRIPTION 1 DCD Data Carry Detect 2 SIN Serial In or Receive Data 3 SOUT Serial Out or Transmit Data 4 DTR Data Terminal Ready 5 GND Ground 6 DSR Data Set Ready 7 RTS Request To Send 8 CTS Clear To Send 9 VCC_COM3 PowerSource SPI Flash ROM Connector: JSPI1 This connector is used to flash SPI flash ROM. JSPI1 9 1 10 2 Pin Definition Pin Description 1 VCC3_SB 3 SPI_MISO_F 5 SPI_CS0_F# 7 GND 9 SPI_HOLD# Pin Description 2 VCC3_SB 4 SPI_MOSI_F 6 SPI_CLK_F 8 GND 10 NC 2-15

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2-15
Hardware Setup
SPI Flash ROM Connector: JSPI1
This connector is used to flash SPI flash ROM.
Pin
Description
Pin
Description
1
VCC3_SB
2
VCC3_SB
3
SPI_MISO_F
4
SPI_MOSI_F
5
SPI_CS0_F#
6
SPI_CLK_F
7
GND
8
GND
9
SPI_HOLD#
10
NC
Pin Definition
1
JSPI1
2
9
10
RS-232 Serial Port Connector: COM2 ~ COM5
This connector is a 16550A high speed communications port that sends/receives 16
bytes FIFOs. You can attach a serial device to it through the optional serial port
bracket.
PIN
SIGNAL
DESCRIPTION
1
DCD
Data Carry Detect
2
SIN
Serial In or Receive Data
3
SOUT
Serial Out or Transmit Data
4
DTR
Data Terminal Ready
5
GND
Ground
6
DSR
Data Set Ready
7
RTS
Request To Send
8
CTS
Clear To Send
9
VCC_COM3
Power Source
Pin Definition
COM2/3/4/5
1
9
2
10