MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 639
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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Functional Description
31.3.1.5 Boundary Scan Register
The boundary scan register is connected between TDI and TDO when the EXTEST, SAMPLE or
SAMPLE/PRELOAD instruction is selected. It captures input pin data, forces fixed values on
output pins, and selects a logic value and direction for bidirectional pins or high impedance for
tri-stated pins.
The boundary scan register contains bits for bonded-out and non bonded-out signals excluding
JTAG signals, analog signals, power supplies, compliance enable pins, device configuration pins,
and clock signals. The eTPU/FEC_EN signal is bonded-out in the MCF5235.
31.4 Functional Description
31.4.1 JTAG Module
The JTAG module consists of a TAP controller state machine, which is responsible for generating
all control signals that execute the JTAG instructions and read/write data registers.
31.4.2 TAP Controller
The TAP controller is a state machine that changes state based on the sequence of logical values
on the TMS pin.
Figure 31-5
shows the machine’s states. The value shown next to each state is the
value of the TMS signal sampled on the rising edge of the TCLK signal.
Asserting the TRST signal asynchronously resets the TAP controller to the test-logic-reset state.
As
Figure 31-5
shows, holding TMS at logic 1 while clocking TCLK through at least five rising
edges also causes the state machine to enter the test-logic-reset state, whatever the initial state.
MCF5235 Reference Manual, Rev. 2
Freescale Semiconductor
31-7
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