C&T Solution CT-CCV6X, User Manual

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CT-CCV6X Intel Atom D2000/N2000 COM Express Type 6 Module
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Signal I/O Description
LPC_SERIRQ I/O
LPC serial interrupt
LPC_CLK O
LPC clock output
– 33MHz nominal
4.12 SPI
The Serial Peripheral Interface (SPI) is a 4-pin interface that supports
SPI-compatible flash devices. The SPI flash device can be up to 16MB
(128Mb). The SPI bus is clocked at either 20MHz, 25MHz, 33MHz or 50 MHz.
SPI devices selected should support one of these frequencies.
Signal I/O Description
SPI_CS# O
Chip select for Carrier Board SPI - may be
sourced from chipset SPI0 or SPI1
SPC_MISO I
Data in to Module from Carrier SPI
SPI_MISI O
Data out from Module to Carrier SPI
SPI_CLK O
Clock from Module to Carrier SPI
SPI_POWER O
Power supply for Carrier Board SPI
– sourced
from Module
– nominally 3.3V. The Module shall
provide a minimum of 100mA on SPI_POWER.
Carriers shall use less than 100ma of
SPI_POWER. SPI_POWER shall only be used
to power SPI devices on the Carrier Board.
4.13 UART
The CT-CCV6X module supports two serial RX/TX ports.
Signal I/O Description
SER[0:1]_TX O
UART transmitter
SER[0:1]_RX I
UART receiver
4.14 SMBus
The SMBus port is specified for system management functions. It is used on
the Module to manage system function such as reading the DRAM SPD
EEPROM and setting clock synthesizer parameters. If the SMBus is used on
the carrier board, then great care must be taken that no conflicts with the
on-Module SMBus devices occur. It may be useful for implementation on the