PM5365-PI 参数 Datasheet PDF下载

型号：	PM5365-PI
PDF下载：	下载PDF文件查看货源
内容描述：	VT / TU映射器和M13多路复用器 [VT/TU MAPPER AND M13 MULTIPLEXER]
分类和应用：	复用器
文件页数/大小：	244 页 / 1139 K
品牌：	PMC [ PMC-SIERRA, INC ]

STANDARD PRODUCT

PM5365 TEMAP

DATASHEET

PMC-1991148

ISSUE 3

HIGH DENSITY VT/TU MAPPER

AND M13 MULTIPLEXER

Table 6

- Asynchronous DS3 mapping to STS-1 (STM-0/AU3)

2 x 8R

RRCIIIII 25 x 8I

2 x 8R

CCRRRRRR

26 x 8I 2 x 8R

CCRROORS

26 x 8I

STS

POH

R: Fixed Stuff bit - set to logic ‘0’ or ‘1’

C: Stuff Control bit - set to logic ‘1’ for stuff indication

S: Stuff Opportunity bit - when stuff control bit is ‘0’, stuff opportunity is I bit

O: Overhead communication channel

I: DS3 payload information

9.19.1 DS3 Demapper

The D3MD performs majority vote on the received C-bits. If 3 out of 5 C-bits are

‘1’s, the associated S bit is interpreted as a stuff bit. If 3 out of 5 C-bits are ‘0’s,

the associated S bit is interpreted as an Information bit. The information bits are

written to an elastic store and the Fixed Stuff bits (R) are ignored.

Given a path signal label mismatch (PSLM) or path signal label unstable (PSLU),

the D3MD ignores the STS-1 (STM-0/AU3) SPE and writes a DS3 AIS pattern to

the elastic store. In addition, the desynchronization algorithm assumes a nominal

ratio of data to stuff bits carried in the S bits (1 out of 3 S bits is assumed to be

an information (data) bit). DS3 AIS is shown in Table 7.

Table 7

- DS3 AIS format.

X (1)

P (p)

M (0)

F (1)

C (0)

F (0)

C (0)

F (0)

C (0)

F (1)

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

电子百科

产品导航

PM5365-PI 参数 Datasheet PDF下载

IC37:专业IC行业平台