User's Manual

9 Interfaces in detail ReliaGATE 10-12 User manual Rev. 2-1
9.9 Expansion connector
The ReliaGATE 10-12 provides, on the right side, an expansion connector with the following interfaces:
l Additional USB OTG interface
l I
2
S Audio interface
l GPIO expansion interface
l I
2
C interface
l SPI interface
For more information see:
l "Right Side Interface overview" on page42
l "How to enable the 3.3V and 5V power supply on the Expansion connector" on page86
l "Appendix 2: Expansion connector pin map with respect to device tree pin assignment" on
page115.
9.9.1 Expansion connector specifications
Connector Layout:
Connector Specifications:
l 2mm dual row R/A header
l Gender: Female
l Type: 12*2-pin; 2.0 mm pitch
Mating Connector Specifications:
l 2mm dual row R/A header
l Gender: Male
l Type: 12*2-pin; 2.0 mm pitch
l Example:
Manufacturer: Pinrex
Part Number: 221-92-12GB51
(or equivalent)
Connector Pinout:
Pin # Signal Type Description
1 VCC 3v3 EXT P 3.3V/100mA max power
supply
2 GND P Ground
3 VCC 5v_EXT P 5V/1A max power supply
4 USB_EXP+ IO USB data positive
5 USB_EXP- IO USB data negative
6 GND P Ground
7 MCASP0_FSX IO I2S audio or GPIO
8 MCASP0_AXR0 IO I2S audio or GPIO
9 MCASP0_ACLKX IO I2S audio or GPIO
10 MCASP0_AXR1 IO I2S audio or GPIO
11 GND P Ground
12 Reserved - Reserved
13 Reserved - Reserved
14 USB_EXP_EN I OTG detect or GPIO
15 GPIO_EXP_2 O 3.3V OUT enable (status)
16 GPIO_EXP_1 O 5V OUT enable (status)
17 GND P Ground
18 SPI1_D1 O/IO SPI Data OUT or GPIO
19 SPI1_CS0 O/IO SPI Chip select or GPIO
20 SPI1_D0 I/IO SPI Data IN or GPIO
21 SPI1_SCLK O/IO SPI Clock or GPIO
22 GND P Ground
23 I2C1: SDA IO I2C Data
24 I2C1: SCL O I2C Clock
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