PSB21384HV13XT Infineon Technologies, PSB21384HV13XT Datasheet - Page 114
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PSB21384HV13XT
Manufacturer Part Number
PSB21384HV13XT
Description
Manufacturer
Infineon Technologies
Datasheet
1.PSB21384HV13XT.pdf
(270 pages)
Specifications of PSB21384HV13XT
Number Of Line Interfaces
1
Control Interface
HDLC
Lead Free Status / Rohs Status
Compliant
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Data Sheet
Figure 63 gives an example of an interrupt controlled reception sequence, supposed
that a long frame (68 byte) followed by two short frames (12 byte each) is received. The
FIFO threshold (block size) is set to 32 byte (EXMR.RFBS = ’00’) in this example:
• After 32 bytes of frame 1 have been received an RPF interrupt is generated to indicate
• The host reads the first data block from RFIFO and acknowledges the reception by
• The second 32 byte block is indicated by RPF which is read and acknowledged by the
• The reception of the remaining 4 bytes plus RSTA are indicated by RME.
• The host gets the number of received bytes (COUNT = 5) from RBCL/RBCH and
• The second frame is received and indicated by RME interrupt.
• The host gets the number of bytes (COUNT = 13) from RBCL/RBCH and reads out
• The third frame is transferred in the same way.
Figure 63
Reception Sequence, Example
Receive
Frame
that a data block can be read from the RFIFO.
RMC. Meanwhile the second data block is received and stored in RFIFO.
host as described before.
reads out the RFIFO. The frame is acknowledged by RMC.
the RFIFO. The RFIFO is acknowledged by RMC.
32
RPF
32 Bytes
RD
Bytes
32
68
RMC
RPF
4
32 Bytes
Bytes
RD
12
12
RMC
Bytes
12
12
RME
Count
RD
CPU Interface
IOM Interface
*
5 Bytes
1)
104
RD
The last byte contains the receive status information <RSTA>
*
1)
RMC
RME
Count
RD
13 Bytes
RD
*
1)
RMC RME
HDLC Controller
Count
RD
PSB 21381/2
PSB 21383/4
13 Bytes
2001-03-12
RD
*
fifoseq_rec.vsd
1)
RMC
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