MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 681

• 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

As an example, any BDM read of an accumulator register (ACCn) must be preceded by two
commands accessing the MAC status register. Specifically, the following BDM sequence is
required:
BdmReadACCn (
)
Likewise, the following BDM sequence is needed to write an accumulator register:
BdmWriteACCn (
)
Additionally, it is required that writes to the accumulator extension registers be performed after
the corresponding accumulators are updated. This is needed since a write to any accumulator alters
the contents of the corresponding extension register.
For more information on saving and restoring the complete EMAC programming model, see
appropriate section of the EMAC specification.
32.5.3.3.10 Write Control Register (
The operand (longword) data is written to the specified control register. The write alters all 32
register bits.
Command/Result Formats:
Freescale Semiconductor
rcreg
wcreg
rcreg
wcreg
rcreg
wcreg
wcreg
wcreg
Command
Result
macsr;
#0,macsr;
accn;
#saved_data,macsr;// restore the original macsr
macsr;
#0,macsr;
#data,accn;
#saved_data,macsr;// restore the original macsr
15
14
0x2
0x0
0x0
Figure 32-35.
13
12
MCF5235 Reference Manual, Rev. 2
11
// read macsr contents & save
// disable all rounding modes
// read the desired accumulator
// read macsr contents & save
// disable all rounding modes
// write the desired accumulator
WCREG
10
WCREG
0x8
0x0
Command/Result Formats
9
)
D[31:16]
8
D[15:0]
7
6
0x8
0x0
Rc
5
ColdFire Background Debug Mode (BDM)
4
3
2
0x0
0x0
1
0
32-37