Digi ConnectCore User Manual

ConnectCore for i.MX51
©2011DigiInternational,Inc. 42
External Memory Interface (EMI)
The module provides access to the external memory controller. This memory controller
handles the interface to devices external to the chip, including generation of chip selects,
clock and control for external peripherals and memory. It provides asynchronous access to
devices with SRAM-like interface and synchronous access to devices with NOR Flash like or
PSRAM like interfaces.
The following lines of the memory controller are available on the module connectors:
Support for multiplexed address/data bus operations
– 16-bit data/28-bit address in non-multiplexed address/data mode
– 16-bit or 32-bit data/28-bit address in multiplexed address/data mode
Programmable data port size of each chip select
28-bit address bus
Up to 5 chip selects
Read and write control lines
2 x byte enable signals
Register/command selection line (CRE)
Note: 8-bit devices are supported by the EMI connecting to only one of the following three
locations:
EIM_DA[7:0] pads
EIM_DA[15:8] pads
EIM_DA[31:24] pads
Connection to the EIM_D[23:16] pads is not supported.
Ethernet 1
The ConnectCore for i.MX51 provides a Fast Ethernet Controller (FEC) designed to support
both 10 and 100 Mbps Ethernet/IEEE 802.3 networks. A low power consumption 10/100
Ethernet transceiver (LAN8710A) from SMSC is used on the module to complete the interface
to the media.
The module does not provide a transformer and Ethernet connector.
The PHY address on the MII bus is 0x7 (0b00111).
The module also provides two status signals for activity and link LEDs.
Ethernet 2
The ConnectCore for i.MX51 module can provide a high-performance 10/100Mbit Ethernet
controller (LAN9221) with integrated MAC and PHY from SMSC as a second Ethernet port.
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Digi ConnectCore Specifications

General

Brand	Digi
Model	ConnectCore
Category	Control Unit
Language	English