MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 557
MOD5234-100IR
Manufacturer Part Number
MOD5234-100IR
Description
MOD5234 10/100 ETHERNET MODULE
Manufacturer
NetBurner Inc
Type
Controllers & Processorsr
Datasheets
1.MOD5272-100IR.pdf
(3 pages)
2.MOD5234-100IR.pdf
(4 pages)
3.MOD5234-100IR.pdf
(754 pages)
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
- Current page: 557 of 754
- Download datasheet (13Mb)
Features of this local loop-back mode are as follows:
26.4.3.3 Remote Loop-Back Mode
In remote loop-back mode, shown in
data bit by bit on the UnTXD output. The local CPU-to-transmitter link is disabled. This mode is
useful in testing receiver and transmitter operation of a remote channel. For this mode, the
transmitter uses the receiver clock.
Because the receiver is not active, received data cannot be read by the CPU and all status
conditions are inactive. Received parity is not checked and is not recalculated for transmission.
Stop bits are sent as they are received. A received break is echoed as received until the next valid
start bit is detected.
26.4.4
Setting UMR1n[PM] programs the UART to operate in a wake-up mode for multidrop or
multiprocessor applications. In this mode, a master can transmit an address character followed by
a block of data characters targeted for one of up to 256 slave stations.
Although slave stations have their channel receivers disabled, they continuously monitor the
master’s data stream. When the master sends an address character, the slave receiver channel
notifies its respective CPU by setting USRn[RxRDY] and generating an interrupt (if programmed
to do so). Each slave station CPU then compares the received address to its station address and
enables its receiver if it wishes to receive the subsequent data characters or block of data from the
Freescale Semiconductor
• Transmitter and CPU-to-receiver communications continue normally in this mode.
• UnRXD input data is ignored
• UnTXD is held marking
• The receiver is clocked by the transmitter clock. The transmitter must be enabled, but the
receiver need not be.
Multidrop Mode
CPU
CPU
Disabled
Disabled
Figure 26-23. Remote Loop-Back
Figure 26-22. Local Loop-Back
MCF5235 Reference Manual, Rev. 2
Figure
Rx
Tx
Rx
Tx
26-23, the channel automatically transmits received
Disabled
Disabled
Disabled
Disabled
UnRXD Input
UnTXD Output
UnRXD Input
UnTXD Input
Functional Description
26-25
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