Digi ConnectCore Hardware Reference Manual

About the module Multiplexed GPIO
ConnectCore for i.MX51 Hardware Reference Manual
54
Ethernet 2
The ConnectCore for i.MX51 module can provide a high-performance 10/100Mb Ethernet controller
(LAN9221) with integrated MAC and PHY from SMSC as a second Ethernet port.
The main features of this Ethernet controller are the following:
n Embedded 16 Kbyte FIFO for packet buffers
n Support burst-mode read for highest performance applications
n Configurable interrupt pin with programmable hold-off timer
n Compatible with IEEE 802.3, 802.3u standards
n Integrate Fast Ethernet MAC/PHY transceiver in one chip
n 10Mb/s and 100Mb/s data rate
n Full and half duplex operations
n 10/100Mb/s Auto-negotiation operation
n Twisted pair crossover detection and auto-correction (HP Auto-MDIX)
n IEEE 802.3x flow control for full-duplex operation
n Wake-on-LAN capabilities
n LED pins for various network activity indications
The Ethernet controller is connected to CS5#. Its programmable polarity interrupt output is connected
to the signal GPIO1_9.
The module does not have a transformer and Ethernet connector.
The module provides two status signals for activity and link LEDs.
I2C
The module provides two I2C interfaces. The I2C interfaces operate up to 400Kbps, depending on pad
loading and timing. The I2C system is a true multiple master bus including arbitration and collision
detection.
The I2C port 2 interface is available on the development board (header P22). Two 2K2 pull-up resistors
are provided on the module.
The I2C port 1 interface is available through the main module connectors (J1 and J2) as well as on the
corresponding signal rail connectors (J25 and J26), multiplexed with other interface functionality. The
development board does not provide a dedicated header for access to I2C port 1.
The I2C port 1 signals are available through the main module connectors as outlined below:
n I2C1_SDA:
l J1.141 - EIM_D16 (used on the module for external Ethernet controller, if present)
l J2.111 - SPI1_MOSI (used on the module as communication channel for Freescale PMIC)
l J2.86 - SD2_CLK (used on the module as communication channel for Wireless LAN interface,
if present)
n I2C1_SCL:
l J1.144 - EIM_D19 (used on the module for external Ethernet controller, if present)
l J2.115 - SPI1_SCLK (used on the module as communication channel with Freescale PMIC)
l J2.88 - SD2_CMD (used on the module as communication channel for Wireless LAN
interface, if present)

Digi ConnectCore Specifications

General

Brand	Digi
Model	ConnectCore
Category	Control Unit
Language	English