Hardware Feature; Layout - Boundary Devices Nitrogen series User Manual

4

Hardware feature

4.1

Layout

As shown in Figure 1, the Nitrogen
application. Note that some of these may not be populated on an evaluation or production board.
J21 - Camera
Data signals 2.775V
I2C signals 3.3v
J19
4-wire touch screen
J16
JTAG port
J11 - COM1/COM2
1: COM2 TRANSMIT
2: NO CONNECT
3: GROUND
4: COM1 TRANSMIT
5: COM1 RECEIVE
6: COM2 RECEIVE
March 10, 2011
board contains a wide variety of I/O options for use in your
Top view
J13 - SDMMC2
1: GND
2: 3.3V
3: SDA3
4: SDA2
5: SDA1
6: SDA0
7: SDCLK
8: SDCMD
9: GPIO 4:30- UART1 RTS
10: GPIO 4:31 - UART1 CTS
J10
PoE
J9
J12 - SD card
USB Host
SDMMC1
Ethernet
J17 - GPIO PORT
1: OUTPUT-GP1_5
2: POWER
3: OUTPUT-GP1_6
4: POWER
5: INPUT-GP1_3
6: GROUND
7: INPUT-GP1_4
8: DRY CONTACT Bottom view
9: DRY CONTACT
GP1_7 control
10: Ground
Backlight power
J5 - 4.3" Display
J6 - 7" Display
J14 - TTL UART - COM3
8: RECEIVE
9: TRANSMIT
Figure 1: Nitrogen board
Revision 1.5
J18 - Power input
1: +5V
2: +5V
3: ground
4: ground
5: reserved
6: reserved
J8 - High speed I2C
1: +5v
2: I2C clock
3: I2C data
4: reserved
5: ground
J2 - SPEAKER
1: MINUS
2: PLUS
J4 - Microphone
J7 - HDMI
EDID/HS-I2C
J3
5V Power
Stereo
Jack
Headphone
J20
USB OTG
5