peb3456e Infineon Technologies Corporation, peb3456e Datasheet - Page 167
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peb3456e
Manufacturer Part Number
peb3456e
Description
Channelized T3 Termination, With Ds3 Framer, M13 Multiplexer, T1/e1 Framers And 256-channel Hdlc/ppp Controller
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEB3456E.pdf
(424 pages)
- Current page: 167 of 424
- Download datasheet (6Mb)
PEB 3456 E
Channel Programming / Reprogramming Concept
A ’Receive Command Complete’ interrupt vector is generated after the channel
information is copied into the internal channel database.
New commands for the same channel may be given after the TE3-CHATT issued the
’Receive Command Complete’ interrupt vector. Prior to new initialization of the same
channel it must be turned off using the ’Receive Off’ command.
Receive Off
The ’Receive Off’ command disables the receive channel immediately. Further incoming
data is discarded until the next ’Receive Init’ command is given. Data already stored in
the receive buffer is written to system memory. If a frame is destroyed by the ’Receive
Off’ command a ’Receive Abort’ channel interrupt vector is generated.
A ’Receive Command Complete’ interrupt vector is generated after remaining data in the
receive buffer is written to system memory. After that time processing of the linked list is
stopped and the channel information is cleared from the internal channel database.
New commands for the same channel may be given after the TE3-CHATT issued the
’Receive Command Complete’ interrupt vector.
Receive Abort/Branch
The ’Receive Abort/Branch’ command is performed 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_FRDA. In case that the ’Receive
Abort/Branch’ command is issued while a packet is written to system memory a ’Receive
Abort’ interrupt vector is generated and the rest of the frame already stored in receive
buffer is discarded. Data reception is continued with a new frame when the data
management unit branched to the new descriptor list.
A ’Receive Command Complete’ interrupt vector is generated after the channel
information is copied into the internal channel database. New commands for the same
channel may be given after the TE3-CHATT issued the ’Receive Command Complete’
interrupt vector.
Receive Hold Reset
The ’Receive Hold Reset’ command must be given after system software has set the
HOLD bit of a receive descriptor from ’1’ to ’0’. In case that the TE3-CHATT 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 reception. Otherwise the particular channel remains in
hold condition.
The TE3-CHATT will NOT generate a ’Receive Command Complete’ interrupt vector
after this command is programmed.
Data Sheet
167
05.2001
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