SAB82525H-V21 Infineon Technologies, SAB82525H-V21 Datasheet - Page 77
SAB82525H-V21
Manufacturer Part Number
SAB82525H-V21
Description
IC CONTROLLER SERIAL 44-MQFP
Manufacturer
Infineon Technologies
Datasheet
1.SAB82525N-V21TR.pdf
(126 pages)
Specifications of SAB82525H-V21
Controller Type
Serial Communications Controller (SCC)
Interface
Serial
Voltage - Supply
4.75 V ~ 5.25 V
Current - Supply
8mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
44-BQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
SAB82525H-V21
SAB82525H-V21IN
SAB82525H-V21IN
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SAB82525H-V21
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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