cx29600 Mindspeed Technologies, cx29600 Datasheet - Page 20

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

1.0 Product Description
1.2 Definitions
1-6
1.2 Definitions
It is expected that the reader is somewhat familiar with SONET/SDH
terminology, but here are a few definitions that are used in this data sheet.
Table 1-2. Level Hierarchies within SONET and SDH
1.3 Conventions
The signal direction naming used in this specification is Transmit when data is
flowing from the slave devices to the CX29600 and Receive when data is flowing
from the CX29600 to the slave devices.
name, for example:
STS-3 (155.52 Mbps)
STS-3c SPE
STS-1 SPE
• Synchronous Transmit Signal (STS or STM)—Terminology used to
• Synchronous Payload Envelope (SPE)—Envelope used within an STS
• Virtual Container (VC)—SDH equivalent term to SPE.
• Path OverHead (POH)—The 9-byte column of octets in the first column
All signals are active high, unless denoted via a trailing “*” after the signal
denote the various levels within the SONET (or SDH) hierarchies, as
shown in
frame structure to carry the path layer overhead and payload data.
of the SPE. It is used to carry the path overhead octets starting with J1.
Signal
Signal*
Mindspeed Technologies
SONET
Table
1-2.
Active High
Active Low
STM-1 (155.52 Mbps)
VC-4
VC-3 with two columns of stuffing added
™
SDH
CX29600 Data Sheet
29600-DSH-001-B
CX29600