cx28250 Mindspeed Technologies, cx28250 Datasheet - Page 47

• Manufacturer Part Number: cx28250
• Description: Cx28250 Atm Physical Interface Phy Devices
• Manufacturer: Mindspeed Technologies

CX28250
ATM Physical Interface (PHY) Devices
Figure 2-8. STS-3c/STM-1 Frame Timing
28250-DSH-002-C
micro-seconds
Overhead
Transport
Time in
0
framing is similar to T1 framing except that SONET delineates the frame with a
block of octets, A1 and A2, instead of just one bit. There is payload data in the
areas between overhead blocks. In STS-3c, 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.
Figure 2-8
Row 1
Mindspeed Technologies
Payload
provides a linear representation of STS-3c/STM-1 framing. This
STS-3c/STM-1 Frame
13.88
2.3 SONET/SDH Framer and Overhead Processor
™
Row 9
2.0 Functional Description
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