Motorola MPC8260 User Manual
29-54
MPC8260 PowerQUICC II UserÕs Manual
MOTOROLA
Part IV. Communications Processor Module
29.10.2.3.1 AAL5 Protocol-SpeciÞc TCT
Figure 29-31 shows the AAL5 protocol-speciÞc TCT.
Figure 29-31 shows the AAL5 protocol-speciÞc TCT.
Table 29-22 describes AAL5 protocol-speciÞc TCT Þelds.
29.10.2.3.2 AAL1 Protocol-SpeciÞc TCT
Figure 29-32 shows the AAL1 protocol-speciÞc TCT.
Figure 29-32 shows the AAL1 protocol-speciÞc TCT.
0x1E
14
IMK
Interrupt mask. Can be changed on-the-ßy.
0 The transmit buffer event of this channel is masked. (TXB event is not sent to the
0 The transmit buffer event of this channel is masked. (TXB event is not sent to the
interrupt queue.)
1 The transmit buffer event of this channel is enabled.
15
PM
Performance monitoring. Can be changed on-the-ßy.
0 No performance monitoring for this VC.
1 Performance is monitored for this VC. When a cell is sent for this VC, the
0 No performance monitoring for this VC.
1 Performance is monitored for this VC. When a cell is sent for this VC, the
performance monitoring table indicated in PMT Þeld is updated.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Offset + 0x10
Tx CRC
Offset + 0x12
Offset + 0x14
Total Message Length
Figure 29-31. AAL5 Protocol-Specific TCT
Table 29-22. AAL5-Specific TCT Field Descriptions
Offset
Name
Description
0x10
Tx CRC
CRC32 temporary result.
0x14
Total Message Length
This Þeld is used by the CP.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Offset + 0x10
Ñ
Valid Octet Size (VOS)
PFM SRT
SPF
STF
Ñ
SN
Offset + 0x12
SRTS Device
Block Size
Offset + 0x14
SRTS_TMP
Structured Pointer (SP)
Figure 29-32. AAL1 Protocol-Specific TCT
Table 29-21. TCT Field Descriptions (Continued)
Offset
Bits
Name Description