MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 553
![MOD5234 10/100 ETHERNET MODULE](/photos/28/91/289101/mod-100ir_sml.jpg)
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
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26.4.2.2 Receiver
The receiver is enabled through its UCRn, as described in
Registers
When the receiver detects a high-to-low (mark-to-space) transition of the start bit on UnRXD, the
state of UnRXD is sampled eight times on the edge of the bit time clock starting one-half clock
after the transition (asynchronous operation) or at the next rising edge of the bit time clock
(synchronous operation). If UnRXD is sampled high, the start bit is invalid and the search for the
valid start bit begins again.
If UnRXD is still low, a valid start bit is assumed and the receiver continues sampling the input at
one-bit time intervals, at the theoretical center of the bit, until the proper number of data bits and
parity, if any, is assembled and one stop bit is detected. Data on the UnRXD input is sampled on
the rising edge of the programmed clock source. The lsb is received first. The data is then
transferred to a receiver holding register and USRn[RxRDY] is set. If the character is less than
eight bits, the most significant unused bits in the receiver holding register are cleared.
Freescale Semiconductor
USRn[TxRDY]
Transmitter
UnCTS
Enabled
UnRTS
UnTXD
internal
module
1
2
3
4
UMR2n[TxRTS] = 1
select
Cn = transmit characters
W = write
UMR2n[TxCTS] = 1
(UCRn).”
3
4
Manually asserted
by
C1
W
BIT
2
1
Figure 26-19. Transmitter Timing Diagram
-
SET
C1
1
command
C1 in transmission
C2
W
MCF5235 Reference Manual, Rev. 2
C2
C3
W
break
Start
W
C3
Break
Section 26.3.5, “UART Command
C4 Stop
W
break
W
transmitted
C4
not
C5
W
Functional Description
Manually
asserted
C6
W
C6
26-21
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