MPC8280 datasheet(1062/1386 Pages) FREESCALE

1062 / 1386 page

ATM AAL1 Circuit Emulation Service

MPC8280 PowerQUICC II Family Reference Manual, Rev. 1

32-2

Freescale Semiconductor

– Partially filled cells support (configurable on a per-VC basis)

– Sequence number generation

– Sequence number protection (CRC-3 and even parity) generation

– Pointer generation during segmentation in structure AAL1 cell format

– Clock recovery using external SRTS logic during reassembly in unstructured AAL1

– Statistics gathering on a per-VC basis:

– AAL1 Tx cell count

– AAL1 Tx buffer underrun

•

Circuit emulation service (CES)

— ATM to TDM

– Structured and unstructured data are transferred between the ATM and MCC automatically

without CPU intervention

– In case of pre-underrun, the MCC start sending the last frame or the user-defined underrun

template. The MCC and ATM controller automatically perform slip control with no CPU

intervention.

– In case of pre-overrun, the ATM receiver discards incoming cells until the MCC transmitter

empties enough buffers for the receiver to restart.

– Supports common channel signaling (CCS)

– Supports channel associated signaling (CAS)

– Up to 4 (one per trunk) CAS blocks residing in internal RAM when in

automatic

CAS mode and up to 8 blocks when in core CAS modify mode

– Supports Nx64 E1/T1 channels

– CAS routing table on per-VC basis

– Automatic un-packing of the CAS information during reassembly and

updating

of the internal CAS block

—TDM to ATM

– Structured and unstructured data are automatically transferred between the MCC and ATM

controller without CPU intervention

– Supports common channel signaling (CCS)

– Supports channel associated signaling (CAS)

– Up to 4 (one per trunk) CAS blocks residing in internal RAM when in

automatic

CAS mode and up to 8 blocks when in core CAS modify mode

– Support Nx64 E1/T1 channels

– CAS routing table on per-VC basis

– Automatic packing of CAS information from internal RAM to AAL1 Tx

cells

– Once per superframe, the CPM fetches the CAS information from an

external

framer and updates each internal CAS block.

MPC8280 Datasheet(PDF) 1062 Page - Freescale Semiconductor, Inc

MPC8280 Datasheet(HTML) 1062 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