TTSV02622 参数 Datasheet PDF下载

Data Sheet

June 2003

TTSV02622 STS-24 Backplane Transceiver

Receiver Block

(continued)

Pointer Mover Subblock (Backplane to Line)

(continued)

Rules for Concatenation.

The pointer mover block can correctly process any length of concatenation (multiple of

three) as long as it begins on an STS-3 boundary (i.e., STS-1 number 1, 4, 7, 10, etc.) and is contained within the

smaller of STS-3, 12 or 24 (see Table 4).

Table 4. Valid Starting Positions for a STS-MC

STS-1

Number

1

4

7

10

13

16

19

22

Notes:

Y = STS-Mc SPE can start in that STS-1.

NO = STS-Mc SPE cannot start in that STS-1.

— = Y or NO, depending on the particular value of M.

STS-3c

SPE

Y

Y

Y

Y

Y

Y

Y

Y

STS-6c

SPE

Y

Y

Y

NO

Y

Y

Y

NO

STS-9c

SPE

Y

Y

NO

NO

Y

Y

NO

NO

STS-12c

SPE

Y

NO

NO

NO

Y

NO

NO

NO

STS-15c

SPE

Y

Y

Y

Y

Y

Y

Y

Y

STS-18c to STS-24c

SPEs

Y

—

—

—

—

—

—

—

Rules for Pointer Interpretation.

s

s

s

s

s

NDF

≤

N bits in H1 byte = (1001 + single bit error).

NRMNBTS (i.e., NDF not set)

≤

N bits in H1 byte = (0110 + single bit error).

CONC pointer

≤

(N bits in H1 byte = 1001 + single bit error) and offset = 11_1111_1111.

AIS pointer

≤

offset and N bits are all 1s (SS bits are ignored).

NORM pointer

≤

(offset 0—782) and (NDF or NRMNBITS).

Agere Systems Inc.

29