Thundercomm TurboX C865 Dev Kit - Secondary High Speed Connector (HS2)

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5.1.5 Reserved
The 96Boards specification calls for a 10K pull-up to 1.8V to be connected to pin 60 of the High Speed
Expansion Connector.
In C865 DEV KIT, a NC resistor is used in HS1 to connect pin60 of HS1 to 1.8V.
5.1.6 SD/SPI
The 96Boards specification calls for an SD interface or a SPI port to be part of the High Speed
Expansion Connector.
The C865 DEV KIT provides a full SD master with SDIO (CLK/CMD/D0~D3) from SM8250 SoC.
All signals are driven at 1.8V and 1.8V only.
5.1.7 Camera Clocks
The 96Boards specification calls for one or two programmable clock interfaces to be provided on the
High Speed Expansion Connector. These clocks may have a secondary function of being CSI0_MCLK
and CSI1_MCLK. If these clocks can’t be supported by the SoC than an alternative GPIO or No-
Connect is allowed by the specifications.
HS1 in C865 DEV KIT implements two CSI clocks, CLK0/CSI0_MCLK, GPIO_94 for CSI0 and
CLK3/CSI3_MCLK, GPIO_97 for CSI3. These signals are driven at 1.8V.
5.1.8 USB
The 96Boards specification calls for a USB data line interface to be present on the high-speed
expansion connector.
C865 DEV KIT implements this requirement. In HS1, USB HS DP/DM signals are routing from a
USB HUB.
5.2 Secondary High Speed Connector: HS2
PIN
C865 DEV KIT Signals
Note
1
PCIE_REFCLK_M
3
PCIE_REFCLK_P
5
PCIE_RX_M
7
PCIE_RX_P