MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 400

• Manufacturer Part Number: MOD5234-100IR
• Description: MOD5234 10/100 ETHERNET MODULE
• Manufacturer: NetBurner Inc
• Type: Controllers & Processorsr

Specifications of MOD5234-100IR

• Interface: I²C, SPI, UART
• Voltage - Supply: 2.5V
• Mounting Type: Surface Mount
• Package / Case: Module
• Product: Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Format: -
• Baud Rates: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q4483564

Fast Ethernet Controller (FEC)
19.3.3 Microcontroller Initialization
In the FEC, the descriptor control RISC initializes some registers after ECR[ETHER_EN] is
asserted. After the microcontroller initialization sequence is complete, the hardware is ready for
operation.
Table 19-33
19.3.4 User Initialization (After Asserting ECR[ETHER_EN])
After asserting ECR[ETHER_EN], the user can set up the buffer/frame descriptors and write to
the TDAR and RDAR. Refer to
19.3.5 Network Interface Options
The FEC supports both an MII interface for 10/100 Mbps Ethernet and a 7-wire serial interface for
10 Mbps Ethernet. The interface mode is selected by the RCR[MII_MODE] bit. In MII mode
(RCR[MII_MODE] = 1), there are 18 signals defined by the IEEE 802.3 standard and supported
by the EMAC. These signals are shown in
19-36
shows microcontroller initialization operations.
Table 19-33. Microcontroller Initialization
Signal Description
Transmit Enable
Section 19.2.5, “Buffer
Transmit Clock
Receive Clock
Transmit Data
Transmit Error
Carrier Sense
Initialize BackOff Random Number Seed
MCF5235 Reference Manual, Rev. 2
Collision
Initialize Transmit Ring Pointer
Initialize FIFO Count Registers
Table 19-34. MII Mode
Initialize Receive Ring Pointer
Clear Transmit FIFO
Activate Transmitter
Clear Receive FIFO
Activate Receiver
Table 19-34
Description
EMAC pin
ETXD[3:0]
below.
ETXCLK
ERXCLK
Descriptors” for more details.
ETXEN
ETXER
ECOL
ECRS
Freescale Semiconductor