Bit name
R/W
Value after reset
Bits 7-0:
90
ADDR =

ADDR = 0x1C5: High Inter-Frame-Gap Water Mark

 

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Bit name

Reserved

Reserved

Reserved

Reserved

Reserved

HI_IFG_WATER_MARK[10:8]

 

 

 

 

 

 

 

 

 

R/W

—

—

—

—

—

R/W

 

 

 

 

 

 

 

 

 

 

 

Value

0

0

0

0

0

0x6

 

 

after

 

 

 

 

 

 

 

 

reset

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bits 7-3:

Reserved

 

 

 

 

 

 

 

Bits 2-0:

HI_IFG_WATER_MARK[10:8] are the three MSBs of the previous register.

 

 

0x1C6: Low Inter-Frame-Gap Water Mark

Bit 7 Bit 6 Bit 5 Bit 4Bit 3 Bit 2Bit 1Bit 0

LO_IFG_WATER_MARK[7:0]

R/W

0x00

LO_IFG_WATER_MARK[7:0] is the LSB of the Low Inter-Frame-Gap Water Mark which is

used by the INFO FIELD RX FIFO Controller to determine when to change the IFG Selection Mode (IFG_SEL) for the MII RX interface from Low-IFG to Normal-IFG. The IFG Selection Mode is used to control the minimum number of MII clock cycles between consecutive MAC frames sent out on the MII RX bus from the HDMP-3001 chip. When the number of bytes in the RX FIFO becomes greater than or equal to the High Inter-Frame-Gap Water Mark, the IFG_SEL is set to one for Low- IFG. When the number of bytes in the RX FIFO becomes less than or equal to the Low Inter- Frame-Gap Water Mark, the IFG_SEL is set to zero for Normal-IFG. At power-up, the IFG_SEL defaults to zero for Normal-IFG selection. This value remains zero until the number of bytes in the RX FIFO becomes greater than or equal to the programmable High Inter-Frame-Gap Water Mark. The IFG selection process continues as described above. The default value of LO_IFG_WATER_MARK is 512 bytes (0x0200).

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Image 90
Agilent Technologies HDMP-3001 manual Addr = 0x1C5 High Inter-Frame-Gap Water Mark Bit, HIIFGWATERMARK108, LOIFGWATERMARK70
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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.
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