Pointer Bytes, H1, H2, H3

BIP-96/24, B2

APS bytes, K1, K2

Synchronization Status, S1

Line/MS REI, M1

Transmits undefined TOH/SOH as fixed all zeros.

Scrambles payload using SONET/SDH frame

synchronous descrambler, polynomial (X7 + X6 +1).

3.9.2 Receive SONET/SDH Process-

ing Overview

consistent values in consecutive frames.

• Monitors the M1 byte to

determine the number of B2

errors that are detected by the

remote terminal in its received

signal.

• Outputs the received E1, F1,

and E2 bytes and two serial

DCC channels, SDCC (D1-D3)

and LDCC (D4-D12).

• Examines the H1-H2 bytes to

establish the state of the

received pointer (Normal,

LOP, AIS). If the pointer state

SONET POH

J1

B3

C2

G1

F2

H4

Z3

Z4

Z5

SDH POH

J1

B3

C2

G1

F2

H4

F3

K3

N1

The Receive SONET/SDH Proces-

sor provides for the framing of the

STS signal, descrambling, TOH/

SOH monitoring including B1 and

B2 monitoring, AIS detection,

pointer processing, and POH

monitoring. The Receive SONET/

SDH Processor performs the fol-

lowing functions:

SONET/SDH framing, [A1

A2] bytes are detected and used for framing. Provides OOF and LOF indicators (single event and second event).

Descrambles payload using SONET/SDH frame synchronous descrambler, polynomial (X7 + X6 +1).

Monitors incoming B1 bytes and compares them to recalculated BIP-8 values. Provides error event information.

Monitors incoming B2 bytes and compares them to recalculated BIP-96/24 values. Provides error event information.

Monitors K1 and K2 bytes, which are used for sending Line/MS AIS or RDI, and for APS signaling.

Monitors the four LSBs of received S1 bytes for

is normal, the first H1H2 bytes

are read to determine the

start of the SPE/VC.

• Monitors POH bytes J1, B3, C2,

and G1 for errors or changes in

state.

• Monitors/captures J1 bytes. In

SONET applications, captures

64 consecutive J1 bytes and in

SDH applications looks for a

repeating 16 consecutive J1

byte pattern.

• Monitors C2 bytes for

verification of correct

tributary types. The tributary

is checked for five consecutive

frames with identical C2 byte

values.

• Monitors G1 for REI-P and

RDI-P.

• Monitors incoming B3 bytes

and compares them to

recalculated BIP-8 values.

Provides error event

information.

3.9.3Transmit SONET/SDH Processing Details

3.9.3.1 SPE/VC Structure

The first column of the SPE/VC is the POH. The ordering of these nine bytes is shown in Figures 12 and 13 for SONET and SDH.

Figure 12. The structure of the SONET STS-3c SPE and SDH VC-4

 

 

 

9POHBYTES

 

 

 

 

ROWS9

PAYLOAD CAPACITY (2340 BYTES)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

261 COLUMNS

Figure 13. STS-3c SPE or VC-4 Structure

25

Page 25
Image 25
Agilent Technologies HDMP-3001 manual Ing Overview, 3.1 SPE/VC Structure

HDMP-3001 specifications

Agilent Technologies, a prominent name in electronics and measurement technology, offers a wide range of products that cater to various industries. Among its notable offerings is the HDMP-3001, a high-speed, serial data transceiver designed to facilitate robust communications in electronic systems. The HDMP-3001 stands out with its ability to handle high bandwidths, making it particularly suited for applications requiring rapid data transfer, such as telecommunications, computer networking, and high-performance computing.

One of the main features of the HDMP-3001 is its advanced signaling technology. By employing differential signaling, the transceiver minimizes electromagnetic interference and enhances signal integrity. This is crucial in environments with multiple electronic devices operating simultaneously, as it ensures data is transmitted clearly and without degradation.

The HDMP-3001 operates at a maximum data rate of 1 Gbps, allowing for efficient data transfer over short distances. This capability is coupled with a flexible architecture that enables users to configure the transceiver for various applications. The device supports both point-to-point and point-to-multipoint configurations, giving engineers the versatility they need in designing communication links.

Moreover, the HDMP-3001 features on-chip clock recovery functionality, which simplifies system design by reducing the number of external components needed. This built-in feature allows the transceiver to maintain synchronization even as data rates increase, further enhancing performance.

The low power consumption characteristic of the HDMP-3001 is another notable advantage. This makes it an attractive choice for battery-operated devices and systems where power efficiency is critical. The transceiver’s design ensures optimal performance while minimizing heat generation and power draw, enabling longer operational lifetimes.

In terms of physical characteristics, the HDMP-3001 comes in a compact, surface-mount package, allowing for easier integration into various circuit board designs. The small form factor, combined with its innovative technology, makes it a popular choice among engineers seeking to improve data transmission reliability without compromising on space or power constraints.

Overall, Agilent Technologies' HDMP-3001 is a formidable solution for high-speed serial data transmission, characterized by its robust performance, low power consumption, and versatile configuration options. With these features, it continues to be an essential component in the evolving landscape of electronic communications.