參數(shù)資料
型號: PM7351
廠商: PMC-Sierra, Inc.
英文描述: OCTAL SERIAL LINK MULTIPLEXER
中文描述: 八路串行連接復(fù)用器
文件頁數(shù): 42/174頁
文件大?。?/td> 1790K
代理商: PM7351
RELEASED
PM7351 S/UNI-VORTEX
DATA SHEET
PMC-1980582
ISSUE 5
OCTAL SERIAL LINK MULTIPLEXER
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
32
Fig. 3 SCI-PHY/Any-PHY Cell
Format
H3
H4
Bit 15
Bit 0
H1
H2
Bit 8 Bit 7
Word 2
Word 3
Word 4
(optional)
Word 5
Word 6
Word 0
(optional)
Word 1
(optional)
PAYLOAD47
PAYLOAD48
Word 28
ADDR[13:0]
H51
PAYLOAD1
PAYLOAD2
PAYLOAD3
PAYLOAD4
UDF1
User Prepend
Reserved
Note 1: Optionally, the H5/UDF fields can be overwritten by ADDR[13:0].
9.1.2 Upstream
In the upstream direction, each S/UNI-VORTEX appears as a single SCI-PHY or
Any-PHY slave. The traffic from each high-speed serial link (RXD0+/- through
RXD7+/) is queued independently to support per logical channel flow control
without head of line blocking. Weighted round robin servicing determines the
order of cells presented on RDAT[15:0]. Weights are strictly linear. For
example, compared to a link with a weight of one, a LVDS link with a weight of
four will on average have four times the number of opportunities to place a cell
from its receive buffer onto the upstream bus. Each high speed serial link can be
assigned a weight between 1 and 4. When the state of the RADR[4:0] inputs
equals the state of the VADR[4:0] pins, the RPA output indicates whether there is
at least one cell available for transfer from any link.
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