cx29600 Mindspeed Technologies, cx29600 Datasheet - Page 66

• Manufacturer Part Number: cx29600
• Description: Optiphytm - M155 Sts-3 Sonet/sdh Multiplexer
• Manufacturer: Mindspeed Technologies

2.0 Functional Description
2.4 SONET/SDH Framer and Overhead Processor
Table 2-12. SONET Overhead Byte Definitions and Values (1 of 2)
2-22
Layer
A1
A2
J0
Z0
B1
E1
F1
D1, D2, D3
H1, H2, H3
B2
K1, K2 (bits 1-5)
K2 (bits 6-8)
D4-D12
S1
Z1
Z2
M1
E2
Byte
with payload data in the areas between overhead blocks. In STS-3, the payload is
called the Synchronous Payload Envelope (SPE). In SDH, the payload is called
Virtual Container 4 (VC4). This document uses SPE to refer to the payload in
either format.
octet-delineated data provided by the clock recovery front-end. This block also
performs the pointer processing and generates row and byte counts to identify
locations within the frame to downstream blocks such as the SONET overhead
processor. The SONET Framer block interfaces directly with the SONET
Overhead block and provides status bits to the SONET Overhead processor for
presentation in status registers. The SONET Overhead block uses defined
overhead bytes in an STS-3/STM-1 frame for Performance Monitoring, Fault
Management, and Facility Testing.
the CX29600 uses.
STS-3/STM-1 framing delineates the frame with a block of octets, A1 and A2,
The SONET Framer block recovers the A1/A2 framing location from
Framing
Framing
Section Trace
Section Growth
Section error monitoring
Section orderwire
Section user’s data channel
Data link channel
Pointer/Concatenation indicator
Path AIS
Line error monitoring
APS channel
Line RDI
Line AIS
No Alarm
Data link channel
Synchronization status
Future growth
Future growth
Line REI
Line orderwire
Mindspeed Technologies
Function
Table 2-12
™
lists the SONET Overhead bytes
F6h
28h
01h or 64-byte Section Trace
message
02, 03, ...
BIP-8
00
00
00, 00, 00
62, 0A, 00
BIP-24 or BIP-96
00
00
00h
00
00
00
B2 error count
00
Transmitted Value
CX29600 Data Sheet
29600-DSH-001-B
CX29600