PEB20256EV21GXP Infineon Technologies, PEB20256EV21GXP Datasheet - Page 75

• Manufacturer Part Number: PEB20256EV21GXP
• Manufacturer: Infineon Technologies

Specifications of PEB20256EV21GXP

• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / Rohs Status: Compliant

channels limit access to system memory for a particular channel. A programmable
transmit buffer size and two programmable threshold are configurable by the host CPU
for each channel.
Note: The sum of both thresholds must be smaller than the transmit buffer size of a
•
Figure 4-9
The threshold values have the following effect:
• Data belonging to one channel stored in the internal transmit buffer will only be
Data Sheet
transferred to the protocol machine when the transmit forward threshold is reached or
if a complete frame is stored inside the transmit buffer. This mechanism avoids data
underrun conditions.
particular channel.
programmable number of
b u f f e r l o c a t i o n s p e r
channel
Transmit Buffer Thresholds
data management unit
transmit forward threshold
transmit refill threshold
protocol machine
transmit buffer
frame
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request new data as long
a s n u m b e r o f e m p t y
l o c a t i o n s i s a b o v e
transmit refill threshold
w a i t w i t h d a t a t r a n s -
mission until buffer level
reaches transmit forward
threshold
Functional Description
PEB 20256 E
PEF 20256 E
04.2001