Digi ConnectCore User Manual

ConnectCore for i.MX51
©2011DigiInternational,Inc. 43
The main features of this Ethernet controller are the following:
Embedded 16 Kbyte FIFO for packet buffers
Support burst-mode read for highest performance applications
Configurable interrupt pin with programmable hold-off timer
Compatible with IEEE 802.3, 802.3u standards
Integrate Fast Ethernet MAC/PHY transceiver in one chip
10Mbps and 100Mbps data rate
Full and half duplex operations
10/100Mbps Auto-negotiation operation
Twisted pair crossover detection and auto-correction (HP Auto-MDIX)
IEEE 802.3x flow control for full-duplex operation
Wake-on-LAN capabilities
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.
I
2
C
The module provides two I
2
C interfaces. The I
2
C interfaces operate up to 400Kbps, depending
on pad loading and timing. The I
2
C system is a true multiple master bus including arbitration
and collision detection.
The I
2
C port 2 interface is available on the development board (header P22). Two 2K2 pull-up
resistors are provided on the module.
The I
2
C 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 I
2
C port 1.
The I
2
C port 1 signals are available through the main module connectors as outlined below:
I
2
C1_SDA:
– J1.141 - EIM_D16 (used on the module for external Ethernet controller, if present)
– J2.111 - SPI1_MOSI (used on the module as communication channel for Freescale PMIC)
– J2.86 - SD2_CLK (used on the module as communication channel for Wireless LAN 
interface, if present)
I
2
C1_SCL:
– J1.144 - EIM_D19 (used on the module for external Ethernet controller, if present)
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Digi ConnectCore Specifications

General

Brand	Digi
Model	ConnectCore
Category	Control Unit
Language	English