參數(shù)資料
型號: PM5372-BI
英文描述: Telecommunication IC
中文描述: 通信集成電路
文件頁數(shù): 126/169頁
文件大?。?/td> 989K
代理商: PM5372-BI
TSE Transmission Switch Element Datasheet
Released
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1991258, Issue 7
126
12 Operation
There are several important aspects regarding the operation of TSE-based cross-connect fabrics;
these are dealt with in turn in the following sections.
12.1 Power Conservation
In order to realize power savings, unused LVDS links may be disabled individually. This is
accomplished by setting the RX_ENB and DRU_ENB to logic “1” for the receive channels, and
by setting the TXLV_ENB and PISO_ENB registers to logic “1” for the transmit channels.
For greater power savings, each face (group of 16 links) of the TSE can be powered down
individually if none of the LVDS links are in use. In addition to disabling the receive and transmit
channels for the face, setting the CSU_ENB register bit to logic “1” will idle the corresponding
CSU, which will greatly reduce power. The power reductions are summarized in the following
table:
Table 17 Power Reduction for Disabled Links
Power Reduction (in
mW)
Block
Control Bit
VDDI
AVDL
AVDH
Remarks
TXLV
TX_ENB=1
0
0
54
RXLV
RX_ENB=1
0
5
7
DRU
DRU_ENB=1
16/20
0
0
16 mW if the CSU is active, otherwise
20
PISO
PISO_ENB=1
10
0
0
CSU
CSU_ENB=1
0
350
50
Bi-directional
Link
26
5
61
TXLV, RXLV, DRU, and PISO
Disabled
Face
480
430
1026
16 links, CSU Disabled
Note:
These power reductions are approximate and have not been characterized.
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