Copyright
©
2017
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6.1.3
GPIOs
The conga-PA5 provides GPIOs via the feature connector X20. Optionally, it can support other features as described in the table below:
Table 26 X20 Pinout Description
Pin
Default
SoC UART
Assembly Option ¹
GbE+ cBC UART
BIOS Switch Option
2
1
GPI0 (+3.3V)
GbE1_SDP0
2
GPI1 (+3.3V)
GbE1_SDP1
3
GPI2 (+3.3V)
GbE2_SDP0
4
GPI3 (+3.3V)
GbE2_SDP1
5
GND
GND
GND
6
GPO0 (+3.3V)
UART1_TXD (+1.8V)
BC_UART_TXD (+3.3V)
7
GPO1 (+3.3V)
UART1_RTS# (+1.8V)
BC_UART_RTS# (+3.3V)
8
GPO2 (+3.3V)
UART1_CTS# (+1.8V)
BC_UART_CTS# (+3.3V)
9
GPO3 (+3.3V)
UART1_RXD# (+1.8V)
BC_UART_RXD# (+3.3V)
10 ³
+3.3V
+3.3V
+3.3V
Connector Type
X20: 10x1 pins, 1.25 mm pitch (Molex 53398-1071); Possible Mating Connector: Molex 51021-1000
Caution
The optional SoC UART signals operate at 1.8 V.
Note
1. The SoC UART port on the feature connector X20 can be offered instead of COM port X15 via an assembly option. The signals of this
optional SoC UART port are directly connected to the SoC.
2. The GbE + cBC UART option requires a customized BIOS. The cBC UART is not fully legacy compatible, only supports TTL, and requires a
a special driver to work under Windows
®
. For more information, contact congatec technical support.
3. A fuse limits the 3.3 V power budget of connector X19 (pin 2) and X20 (pin 10) to a total of 500 mA hold current.
Pin 1
X20