SAB82525N-V21 Infineon Technologies, SAB82525N-V21 Datasheet - Page 77
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SAB82525N-V21
Manufacturer Part Number
SAB82525N-V21
Description
Manufacturer
Infineon Technologies
Datasheet
1.SAB82525N-V21.pdf
(126 pages)
Specifications of SAB82525N-V21
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.75V
Operating Supply Voltage (max)
5.25V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
44
Lead Free Status / RoHS Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SAB82525N-V21
Manufacturer:
AMD
Quantity:
1
Company:
Part Number:
SAB82525N-V21TR
Manufacturer:
Infineon Technologies
Quantity:
10 000
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The following figure gives an example of an interrupt controlled reception sequence, supposed
that a long frame (66 bytes) followed by two short frames (6 bytes each) are received.
Figure 37
Interrupt Driven Reception Sequence Example
DMA Mode
If the RFIFO contains 32 bytes, the HSCX autonomously requests a block data transfer by
DMA activating the DRQR line as long as the start of the 32nd read cycle. This forces the DMA
controller to continuously perform bus cycles till 32 bytes are transferred from the HSCX to the
system memory.
If the RFIFO contains less than 32 bytes (one short frame or the last part of a long frame) the
HSCX requests a block data transfer depending on the contents of the RFIFO according to the
following table:
RFIFO
Contents
(Bytes)
1, 2, 3
4 - 7
8 - 15
16 - 32
Note: All available status informations after RME are summarized in table 10.
Semiconductor Group
Serial
Interface
HSCX
CPU
Interface
Receive Frame
32
RPF
DMA
Request
(Bytes)
4
8
16
32
32
. . .
RD
Bytes
32
1 (66
RMC
Bytes)
RPF
2
32
. . .
RD
Bytes
6
RMC
6
RME
77
...
RMC
RME
...
RMC
RME
SAB 82525
SAB 82526
SAF 82525
SAF 82526
...
ITD00251
RMC
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