Adlink LEC-BTS Manual do Utilizador descarregar pdf (Página 13)

Interfaces 9

LEC-BTS

3.10 SPI

The CPU implements an SPI controller, which supports two SPI Flash devices on the module for

BIOS storage.

3.11 Serial (UART)

The LEC-BTS provides three serial interfaces: Two ports are high-speed, 4-wire ports (with TX/

RX and RTS#/CTS#), and one port is 2-wire (with TX/RX only.)

3.12 I2S

The SMARC connector provides three pins for an LPE_I2S audio interface. The LPE_I2S inter-

face is brought out through the I2S0 pins on the SMARC connector.

3.13 SD/SDIO Interface

Four parallel data lines comprise the SD/SDIO interface, supporting SD Card sockets.

3.14 eMMC Interface

The LEC-BTS provides one 8-bit eMMC interface port, brought out from the CPU through the

SDMMC pins on the SMARC connector.

3.15 GPIO

The LEC-BTS provides 12 GPIO signals from the CMOS device on the module. The GPIO sig-

nals can be utilized for General Purpose IOs as well as camera, HDA, PWM, TACH, and CAN

interfaces.

3.16 LPC Debug

A 40-pin, front flip, DB40 connector allows access to debug and update the BIOS, BMC, and OS

code on the module. (Refer to “Debug (DB40)” on page 13.)

Table 3-1: GPIO Default Settings

SMARC Connector Pin Default Function

GPIO0 CAM0_PWR#

GPIO1 CAM1_PWR#

GPIO2 CAM0_RST#

GPIO3 CAM1_RST#

GPIO4 HDA_RST#

GPIO5 GPIO

GPIO6 GPIO

GPIO7 GPIO

GPIO8 GPIO

GPIO9 GPIO

GPIO10 GPIO

GPIO11 GPIO

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 21 22

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