PEB20256EV21GXP Infineon Technologies, PEB20256EV21GXP Datasheet - Page 117
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PEB20256EV21GXP
Manufacturer Part Number
PEB20256EV21GXP
Description
Manufacturer
Infineon Technologies
Datasheet
1.PEB20256EV21GXP.pdf
(232 pages)
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
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PEB 20256 E
PEF 20256 E
Channel Programming / Reprogramming Concept
completed internally and the device responds with a ’Transmit Command Failed’
interrupt vector. Furthermore the MUNICH256 will not start processing the linked list for
this particular channel.
New commands for the same channel may be given after the user received the ’Transmit
Command Complete’ interrupt vector. Prior to new initialization of the same channel it
must be turned off using the ’Transmit Off’ command.
Transmit Off
After ’Transmit Off’ the transmit channel is disabled immediately and the time slots
assigned to the selected channel are tri-stated. The transmit buffer releases all buffer
locations assigned to the channel. The data management unit updates the last
processed descriptor with the complete bit if enabled and generates a ’Transmit Host
Initiated’ interrupt vector if the THI bit in the last descriptor was set. All channel related
informations are cleared from the internal channel database.
A ’Transmit Command Complete’ interrupt vector is generated when the channel
command is finished. After that time processing of the linked list is completely stopped.
New commands for the same channel may be given after the user received the ’Transmit
Command Complete’ interrupt vector.
Transmit Abort/Branch
The ’Transmit Abort/Branch’ command is performed on the serial side and in the data
management unit. The data management unit stops immediately processing the current
descriptor and branches to a new descriptor pointed to by CSPEC_FTDA. Data which is
already stored in the transmit buffer is sent on the serial side. The protocol machine will
append an abort sequence if data in transmit buffer was not complete due to ’Transmit
Abort/Branch’ command. System software is informed about the aborted frame by a
’Transmit Abort’ channel interrupt vector. If no data is stored in the transmit buffer this
command does not affect the serial side and no ’Transmit Abort’ interrupt vector is
generated. Data transmission is continued with a new frame when the data management
unit branched to the new descriptor list.
A ’Transmit Command Complete’ interrupt vector is generated after the management
unit released the old descriptor list. New commands for the same channel may be given
after the user received the ’Transmit Command Complete’ interrupt vector.
Transmit Hold Reset
The ’Transmit Hold Reset’ command must be given after system software has set the
HOLD bit of a descriptor from ’1’ to ’0’. In case that the MUNICH256 is in hold condition
it reads the descriptor which had its HOLD bit set and tests the HOLD bit of the
descriptor. If the HOLD bit is set to ’0’ the data management unit branches to the next
descriptor and continues data transmission. Otherwise the particular channel remains in
hold condition.
Data Sheet
117
04.2001
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