tdat04622 ETC-unknow, tdat04622 Datasheet - Page 115

• Manufacturer Part Number: tdat04622
• Description: Tdat Sonet/sdh 155/622/2488 Mbits/s Data Interfaces
• Manufacturer: ETC-unknow

Data Sheet
May 2001
Agere Systems Inc.
Functional Description
UTOPIA (UT) Interface Block
UTOPIA ATM Cell Processing (continued)
U3 Modes. For U3 and U3+, both the 52-byte and 53-byte, and either 8-bit or 32-bit modes are supported for ATM
cells as shown below.
For the case of an 8-bit UTOPIA interface, data is placed on the UTOPIA port as shown in Table 27.
Table 27. Bus Format for 8-bit Interface
For the case of a 32-bit UTOPIA interface, parallel data is placed on the UTOPIA port as shown in Table 28.
Table 28. Bus Format for 32-bit Interface
* UDF refers to undefined H5 bytes.
† This option is also called the 56-byte mode.
TxD[15:8] or RxD[15:8]
RxD[31:24]
TxD[31:24]
H5 (HEC)
D45
H1
D1
D5
or
.
.
.
H5 (HEC)
D48
H1
H2
H3
H4
D1
D2
.
.
.
RxD[23:16]
TxD[23:16]
53-byte Option
H5-UDF1
D46
53-byte Option
H2
D2
D6
or
.
.
.
TxD[7:0] or RxD[7:0]
RxD[15:8]
TxD[15:8]
H5-UDF2
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
(continued)
D47
H3
D3
D7
or
(continued)
.
.
.
†
.
.
.
H5-UDF3
RxD[7:0]
TxD[7:0]
D48
H4
D4
D8
or
TxD[15:8] or RxD[15:8]
.
.
.
52-byte Option (HEC Omitted)
RxD[31:24]
TxD[31:24]
D48
H1
H2
H3
H4
D1
D2
.
.
.
D45
H1
D1
D5
or
.
.
.
52-byte Option (HEC Omitted)
155/622/2488 Mbits/s Data Interface
RxD[23:16]
TxD[23:16]
TxD[7:0] or RxD[7:0]
D46
H2
D2
D6
or
.
.
.
Not used
Not used
Not used
Not used
Not used
Not used
Not used
TDAT042G5 SONET/SDH
.
.
.
RxD[15:8]
TxD[15:8]
D47
H3
D3
D7
or
.
.
.
RxD[7:0]
TxD[7:0]
D48
H4
D4
D8
or
.
.
.
87