MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 420

• 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

Enhanced Time Processing Unit (eTPU)
20.2.2.1 Time Bases
The eTPU engine has two 24-bit count registers, TCR1 and TCR2, which provide reference time
bases for all match and input capture events. Prescalers for both time bases are controlled by the
MCF5235 ColdFire core through bit fields in the eTPU engine configuration registers (see
Section 20.2.2.1, “Time
The values for each of the TCR1 and TCR2 registers can be independently derived from the
internal bus clock or from an external input via the TCRCLK pin. In addition, the TCR2 timebase
can be derived from special angle-clock hardware which enables implementing angle-based
functions. This feature is added to support advanced angle based engine control applications.
20.2.2.2 eTPU Timer Channels
The eTPU engine has 32 identical, independent channels. Each channel corresponds to an
input/output signal whose direction is controlled by microcode. Every channel has access to two
24-bit counter registers, TCR1 and TCR2.
Each channel consists of event logic which supports a total of four events, two capture and two
match events. The event logic contains two 24-bit capture registers and two 24-bit match registers.
The match registers are compared to a selected TCR by greater-than-or-equal-to and equal-only
comparators. The match and compare register pairs enable many combinations of single and
double-action functions while only requiring a single service from the microengine.
The channel configuration can be changed by the microengine. Each channel can perform double
capture, double match, or a variety of other capture-match combinations. Service requests may be
generated on one or both of the match events.
Every channel can use any time base or angle counter for either match or capture operation. For
example, a match on TCR1 can capture the value of TCR2. The channels can request service from
the microengine due to recognized pin transitions (input events) or timebase matches.
Every eTPU channel may be configured with the following combinations:
The double match functionality has various combinations for generation of service request and
determining pin actions.
20-6
• Single input capture, no match (TPU3 functionality)
• Single input capture with single match time-out (TPU3 functionality)
• Single input capture with double match time-out with several double match submodes
• Double input capture with single or double match time-out with several double match
• Single output match (TPU3 functionality)
• Double output match with several double match submodes
submodes
Bases”)
MCF5235 Reference Manual, Rev. 2
Freescale Semiconductor