TMUX03155 datasheet(21/120 Pages) AGERE

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Agere Systems Inc.

Data Sheet

April 2001

TMUX03155 STS-3/STM-1 (AU-4) Multiplexer/Demultiplexer

Transmit Direction Overview (continued)

STM-1 (AU-4) Frame Generation (AU-4 Mode)

The device will create the overhead according to the following table. The path overhead bytes are created in this

mode. The three AU-3 inputs are converted to TUG-3 format and inserted into a VC-4 that is multiplexed into an

AU-4.

* Access through transmit TOAC (see Table 17 on page 37).

Note: Bold type within the table is not defined in the standard and is labeled here for clarity.

The following values are assigned to the transmitted overhead bytes:

A1—11110110 (0xF6)

A2—00101000 (0x28)

J0—Variable value TJ0DINS[7:0], 0x3F

Z0-2—Variable value TZ02DINS[7:0], 0x40

Z0-3—Variable value TZ03DINS[7:0], 0x41

B1—Variable value (BIP-8 Parity)

F1—Variable value TF1DINS[7:0], 0x42

H1-1—01101010

H2-1—00001010 (pointer value of 522\D)

Y—10011011 (NDF, SS, PTR)—Concatenation indication

†—All ones pattern

H3-1, 2, 3—Default byte value (0xFF)

B2-1, 2, 3—Variable value BIP-24

K1—Variable value TAPSINS[12:5], 0x43, 0x44

K2—Variable value TAPSINS[4:0], TK2INS[2:0], 0x43, 0x44—RDI-L, AIS-L

S1—Variable value TS1DINS[7:0], 0x45

M1—Variable value (section FEBE—number of B2 errors) TSFEBEINH, 0x3E

† Access through transmit TOAC.

Table 8. STM-1 (AU-4) Output Overhead Format

STM-1 (AU-4) Overhead

AU-4 Payload

Col. 1 Col. 2 Col. 3 Col. 4 Col. 5 Col. 6 Col. 7 Col. 8 Col. 9 POH

22—

270

Row 1

A1-1

A1-2

A1-3

A2-1

A2-2

A2-3

Z0-2

Z0-3

—

Row 2

B1-2*

B1-3*E1*

E1-2*

E1-3*F1*

F1-2*

F1-3*B3

—

Row 3

D1*

D1-2*

D1-3*D2*

D2-2*

D2-3*D3*

D3-2*

D3-3*C2

—

Row 4

H1-1

H2-1

H3-1

H3-2

H3-3

—

Row 5

B2-1

B2-2

B2-3

K1-2*

K1-3*K2

K2-2*

K2-3*F2

—

Row 6

D4*

D4-2*

D4-3*D5*

D5-2*

D5-3*D6*

D6-2*

D6-3*H4

—

Row 7

D7*

D7-2*

D7-3*D8*

D8-2*

D8-3*D9*

D9-2*

D9-3*Z3

—

Row 8

D10*

D10-2* D10-3*D11*

D11-2* D11-3*D12*

D12-2* D12-3*Z4

—

Row 9

S1*

Z1-2*

Z1-3*

Z2-1*

Z2-2*

E2*

E2-2*

E2-3*Z5

—

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