MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 513

• 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

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T0_FINISH
24.3.2 Calculating Time-Out Values
The formula below determines time-out periods for various reference values:
When calculating time-out periods, add 1 to the prescaler to simplify calculating, because
DTMRn[PS] = 0x00 yields a prescaler of 1 and DTMRn[PS] = 0xFF yields a prescaler of 256.
For example, if a 75-MHz timer clock is divided by 16, DTMRn[PS] = 0x7F, and the timer is
referenced at 0x11E1A (73,242 decimal), the time-out period is as follows:
Freescale Semiconductor
Time-out period = (1/clock frequency) x (1 or 16) x (DTMRn[PS] + 1) x (DTRRn[REF] + 1)
btst #1,D1
beq T0_LOOP
addi.l #1,D2
cmp.l #5,D2
beq T0_FINISH
move.b #0x02,D0
move.b D0,TER0
jmp T0_LOOP
HALT
Time-out period = [1/(75 x 10
MCF5235 Reference Manual, Rev. 2
;TER0[REF] has been set
6
)] x (16) x (127 + 1) x (73,242 + 1) = 2.00 s
;Increment D2
;Did D2 reach 5? (i.e. timer ref has timed)
;If so, end timer0 example. Otherwise jump
;writing one to TER0[REF] clears the event
;End processing. Example is finished
Using the DMA Timer Modules
24-11