PM8621 datasheet(118/184 Pages) PMC

118 / 184 page

NSE-8G™ Standard Product Data Sheet

Preliminary

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use

117

Document ID: PMC-2010850, Issue 1

Bit

Type

Function

Default

Bit 31:24

Reserved

00000000

Bit 23:16

RX_AUX[7:0]

00h

Bit 15

RX_STTS_VALID

N/A

Bit 14:13

RX_LINK[1:0]

Bit 12:11

RX_PAGE[1:0]

Bit 10:8

RX_USER[2:0]

000

Bit 7

CRC_ERR

Bit 6

HDR_CRC_ERR

Bit 5:2

RX_MSG_LVL[3:0]

0000

Bit 1

RX_FI_BUSY

Bit 0

RX_XFER_SYNC

N/A

Bit 0

RX_SYNC_DONE

This register serves a dual-purpose dependant on whether it is being read or written.

When it is read it returns the status for the Message Receive Channel.

When it is written (with 00000001h) to it is used it synchronize the Receive FIFO to the start of a

message boundary or perform a message skip.

RX_AUX[7:0]

These bits constitute the output from an Auxiliary channel between CPUs at each end of the

link. Their use is at the Software developers’ discretion. A read from this register will return

the AUX header byte of the last message received (without a CRC-16 error).

RX_XFER_SYNC

Rx Transfer sync writing Writing ‘1’ to this bit initiates a read sequence from the start of the

next unread message. The hardware

° Aligns the message read buffer address to the start of the next unread message

° Prefetches the 1

st Dword from the unread message buffer so that it is ready for a s/w read

from the Receive FIFO Data register(s)

An unread message in this context means that the s/w has not read any of the message

payload data by reading the Receive FIFO Data register(s)

After the RX XFER SYNC process has been completed successive reads from the Receive

FIFO return the last Dword read from the Receive FIFO and prefetch the next Dword (when

available).

This bit must be written to a ‘1’ at the start of a message read sequence.

PM8621 Datasheet(PDF) 118 Page - PMC-Sierra, Inc

PM8621 Datasheet(HTML) 118 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