Digi ConnectCore Hardware Reference Manual

About the module Multiplexed GPIO
ConnectCore for i.MX51 Hardware Reference Manual
53
n Independent (asynchronous) or shared (synchronous) transmit and receive sections operating
in Master or Slave mode
n Normal mode operation using frame sync
n Network mode operation allowing multiple devices to share the port with as many as 32 time
slots
n Two sets of four 15 x 32 bits Transmit and Receive FIFOs.
n Programmable data interface mode such like I
2
S, LSB, MSB aligned
n Programmable word length 8, 10, 12, 16, 18, 20, 22 or 24 bits
n Program options for frame sync and clock generation
n Programmable I
2
S modes (Master, Slave or Normal)
n AC97 support
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:
n Support for multiplexed address/data bus operations
l 16-bit data/28-bit address in non-multiplexed address/data mode
l 16-bit or 32-bit data/28-bit address in multiplexed address/data mode
n Programmable data port size of each chip select
n 28-bit address bus
n Up to 5 chip selects
n Read and write control lines
n 2 x byte enable signals
n Register/command selection line (CRE)
Note 8-bit devices are supported by the EMI connecting to only one of the following three locations:
n EIM_DA[7:0] pads
n EIM_DA[15:8] pads
n 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 Mb/s 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.

Digi ConnectCore Specifications

General

Brand	Digi
Model	ConnectCore
Category	Control Unit
Language	English