PM7341 datasheet(121/413 Pages) PMC

121 / 413 page

PRELIMINARY

INVERSE MULTIPLEXING OVER ATM

PM7341 S/UNI-IMA-84

DATASHEET

PMC-2000223

ISSUE 4

INVERSE MULTIPLEXING OVER ATM

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

123

• All groups must have a unique value between 0 and 83.(0 to 30 for UTOPIA

L2 mode).

Note: The actual address used on the Any-PHY bus to access a particular

channel is a combination of the TX VPHY ID (bits 6:0) and the Tx Any-PHY

Address Config Reg(bits 15:7).

10.6.2 Interrupt Driven Error/Status Reporting

The interrupt logic has several layers. The top layer of the interrupt logic, the

Master Interrupt Register, indicates from which block the interrupt came. Once

the block is determined the processor can access the appropriate block to

determine the interrupt cause.

10.6.2.1

Line Interface Interrupts

The Line Interface sources three interrupts: SBI_DROP_INTR, SBI_ADD_INTR,

and SBI_ALARM_INTR. The SBI_DROP_INTR indicates there is an interrupt

pending related to the SBI-Drop bus, also known as the Extract SBI bus. The

Extract Master Interrupt Status Register needs to be read to determine the cause

of the interrupt. The SBI_ADD_INTR indicates there is an interrupt pending

related to the SBI-Add bus, also known as the Insert SBI bus. The Insert Master

Interrupt Status Register needs to be read to determine the cause of the

interrupt. The SBI_ALARM_INTR indicates that an alarm was detected on a link

from the SBI. The SBI Alarm Interrupt registers will identify which link failed.

10.6.2.2

TC Layer Interrupts

The TC layer sources 4 different interrupts that are reported through a FIFO

structure. As each interrupt occurs it is placed into a FIFO along with a Link

Identifier to uniquely identify the link. The error conditions reported through this

structure include HEC Errors, Loss of Cell Delineation (LCD) state change, Out

of Cell Delineation (OCD) state change, and Receive Link FIFO overflow. To

determine the actual states of LCD and OCD it is necessary to query the

individual link status. If this FIFO overflows, it is necessary to query the status of

all links in order to retrieve accurate state information.

10.6.2.3

IMA Interrupts

The IMA sub-layer sources four interrupts: RIPP_INTR, TIMA_INTR,

RDAT_INTR, and ICP_CELL_AVL. The RIPP_INTR indicates that either a status

PM7341 Datasheet(PDF) 121 Page - PMC-Sierra, Inc

PM7341 Datasheet(HTML) 121 Page - PMC-Sierra, 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