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IXP400 Software
Access-Layer Components: HSS-Access (IxHssAcc) API
Programmer’s Guide IXP400 Software Version 2.0 April 2005
Document Number: 252539, Revision: 007 217
Figure 70. HSS Channelized Transmit Operation
...
Channel:
F0-
TSa
F0-
TSb
F0-
TSc
...
F0-
TSz
Frame 0
01 2 N
F1-
TSa
F1-
TSb
F1-
TSc
...
F1-
TSz
Frame 1
01 2 N
...
NPE-A
HssChannelized Tx
Operation
TxPtrCircBufSizeB
...
Circular buffer
for pointers
to Tx-data
blocks
F0-TSa
F1-TSa
F2-TSa
..
.
First Tx-data
block for
channel 0
1. Tx data for each
channel read
using pointers
in TxPtrCircBuf
TxPtrCircBuf
2. Tx data transmitted
to HSS port
HSS Port Serial Data Stream
(TSa, TSb, ... = timeslots configured as "voice")
PtrChN
PtrCh0
PtrCh1
PtrCh2
..
.
PtrChN
PtrCh0
PtrCh1
PtrCh2
..
.
PtrChN
PtrCh0
PtrCh1
PtrCh2
..
.
..
.
..
.
Second
Tx-data
block for
channel 0
Second
Tx-data
block for
channel 1
F0-TSz
F1-TSz
F2-TSz
..
.
F0-TSb
F1-TSb
F2-TSb
..
.
First Tx-data
block for
channel 1
First Tx-data
block for
channel N
B2385-02