MPC8280 datasheet(1094/1386 Pages) FREESCALE

1094 / 1386 page

ATM AAL1 Circuit Emulation Service

MPC8280 PowerQUICC II Family Reference Manual, Rev. 1

32-34

Freescale Semiconductor

32.9.2.1

AAL1 CES Protocol-Specific TCT

Figure 32-24 shows the AAL1 CES protocol-specific transmission connection tables (TCT).

Table 32-8 describes AAL1 CES protocol-specific TCT fields.

0x1C

0–1

—

Reserved, should be cleared during initialization.

2–7

PMT

Performance monitoring table. Points to one of the available 64 performance monitoring

tables. The starting address of the table is PMT_BASE+PMT

× 32. Can be changed

on-the-fly.

8–15

TBD_BASE

TxBD base. Points to the first BD in the channel’s TxBD table. The 8 most-significant

bits of the address are taken from BD_BASE_EXT in the parameter RAM. The four

least-significant bits of the address are taken as zero.

0x1E

0–11

BNM

Buffer-not-ready interrupt mask. Can be changed on-the-fly.

0 The transmit buffer-not-ready event of this channel is masked. (TBNR event is not

sent to the interrupt queue.)

1 The buffer-not-ready event of this channel is enabled.

STPT

Stop transmit. Initialize to 0. When the host sets this bit, the CP deactivates this channel

and clears TCT[VCON] when the channel is next encountered in the APC scheduling

table. Note that for AAL5 if STPT is set and frame transmission is already started

(TCT[INF]=1), an abort indication will be sent (last cell with zero length field).

IMK

Interrupt mask. Can be changed on-the-fly.

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.

Performance monitoring. Can be changed on-the-fly.

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 field is updated.

Offset + 0x10

—

Valid Octet Size (VOS)

PFM SRT

SPIF

STF

—

Offset + 0x12

SRTS_DEV

Block Size

Offset + 0x14

ICASB/SRTS_TMP

Structured Pointer (SP)

Figure 32-24. AAL1 CES Protocol-Specific TCT

Table 32-7. TCT Field Descriptions (continued)

Offset

Bits

Name

Description

MPC8280 Datasheet(PDF) 1094 Page - Freescale Semiconductor, Inc

MPC8280 Datasheet(HTML) 1094 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL