Evido EAD-D2000 Instrukcja Użytkownika Pobierz pdf (Strona 29)

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

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#

Chip select for Carrier Board SPI - may be

sourced from chipset SPI0 or SPI1

SPC_MISO

Data in to Module from Carrier SPI

SPI_MISI

Data out from Module to Carrier SPI

SPI_CLK

Clock from Module to Carrier SPI

SPI_POWER

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

UART transmitter

SER[0:1]_RX

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

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