Table 11. Path RDI bit values

PRDI_AUTO

PRDI_ENH

RX_PAIS

RX_UNEQ

RX_PLM

G1 Bits 5, 6, and 7

 

 

RX_LOP

 

 

 

 

 

 

 

 

 

0

x

x

x

x

TX_G1[2:0]

 

 

 

 

 

 

1

0

1

x

x

100

 

 

 

 

 

 

 

 

0

x

x

000

 

 

 

 

 

 

 

1

1

x

x

101

 

 

 

 

 

 

 

 

0

1

x

110

 

 

 

 

 

 

 

 

0

0

1

010

 

 

 

 

 

 

 

 

0

0

0

001

 

 

 

 

 

 

3.9.3.2.9POH AIS Generation

Normal generation of SONET/ SDH payload is suspended during transmission of the Line (Multi- plex Section or MS) Alarm Indication Signal, LAIS, or the Path (Administrative Unit or AU) AIS signals, PAIS. AIS is gener- ated if:

TX_LAIS or TX_PAIS = 1. In addition the entire payload (9396 or 2349 bytes) is filled with all ones.

LOF is detected.

Bits 6 - 8 of K2 are all ones.

The pointer bytes H1, H2 are all ones.

3.9.3.2.10Unequipped Generation

Unless AIS is active, unequipped SPE/VC (all SPE/VC bytes are filled with all zeros) is generated if TX_UNEQ = 1.

3.9.3.3 TOH/SOH Generation

The SONET TOH bytes are gener- ally the same as the SDH SOH bytes. The following sections de- fine the values generated for all TOH/SOH bytes. Where the byte names differ between SONET and SDH, the SONET names are listed

first. Entries that are blank in Table 15 are SONET undefined or SDH non-standardized reserved bytes. The HDMP-3001 fills these bytes with all zeros. The Z1 and Z2 bytes are non-standardized re- served bytes for STM-1.

3.9.3.3.1TOH/SOH AIS Generation

Normal generation of TOH/SOH bytes is suspended during trans- mission of LAIS or PAIS. If TX_LAIS = 1, the first three rows of the TOH/SOH are generated normally, but the remainder of the TOH/SOH as well as all SPE/VC bytes are transmitted as all ones bytes. If TX_PAIS = 1, all rows of the TOH/SOH are generated nor- mally, except for the pointer bytes in row four. The H1, H2, and H3 bytes as well as all SPE/VC bytes are transmitted as all ones.

3.9.3.3.2Frame Bytes (A1 and A2)

The frame bytes are normally gen- erated with the fixed patterns:

A1: 1111_0110 = F6

A2: 0010_1000 = 28

3.9.3.3.3Section Trace/Regenerator Section Trace (J0)

Over periods of 16 consecutive frames, the HDMP-3001 continu- ously transmits the 16-byte pattern contained in TX_J0[15:0]_[7:0]. The bytes are transmitted in descending order starting with TX_J0[15]_[7:0].

The ITU-T G.707 standard states that a 16-byte section trace frame containing the Section Access Point Identifier (SAPI) defined in clause3/G.831 should be transmit- ted continuously in consecutive

J0 bytes. Note that only the frame start marker byte should contain a one in its MSB.

The Section Trace function is not currently defined for SONET. Un- less a similar section trace is defined for SONET, all of the TX_J0 bytes should be filled with 0000_0001 so that a decimal one is transmitted continuously in J0.

27

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Agilent Technologies HDMP-3001 manual Prdiauto Prdienh Rxpais Rxuneq Rxplm, Rxlop

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.