MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 401

• 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

The 7-wire serial mode interface (RCR[MII_MODE] = 0) operates in what is generally referred
to as the “AMD” mode. 7-wire mode connections to the external transceiver are shown in
Table
19.3.6 FEC Frame Transmission
The Ethernet transmitter is designed to work with almost no intervention from software. Once
ECR[ETHER_EN] is asserted and data appears in the transmit FIFO, the Ethernet MAC is able to
transmit onto the network.
When the transmit FIFO fills to the watermark (defined by the TFWR), the MAC transmit logic
will assert ETXEN and start transmitting the preamble (PA) sequence, the start frame delimiter
(SFD), and then the frame information from the FIFO. However, the controller defers the
transmission if the network is busy (ECRS asserts). Before transmitting, the controller waits for
carrier sense to become inactive, then determines if carrier sense stays inactive for 60 bit times. If
so, the transmission begins after waiting an additional 36 bit times (96 bit times after carrier sense
originally became inactive). See
Freescale Semiconductor
19-35.
Table 19-35. 7-Wire Mode Configuration
SIGNAL DESCRIPTION
Management Data Clock
Receive Data Valid
Table 19-34. MII Mode (Continued)
Signal Description
Receive Data Valid
Transmit Enable
Management Data
Transmit Clock
Receive Clock
Transmit Data
Receive Data
Receive Error
Section 19.3.14.1, “ Transmission
Receive Data
Input/Output
Collision
MCF5235 Reference Manual, Rev. 2
EMAC pin
ERXD[3:0]
EMAC PIN
ERXDV
ERXER
EMDIO
EMDC
ERXCLK
ETXCLK
ERXD[0]
ETXD[0]
ERXDV
ETXEN
ECOL
Errors” for more details.
Functional Description
19-37