CXB1454R 查看數據表（PDF） - Sony Semiconductor

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CXB1454R

VGA/SVGA/XGA 24bit Receiver

Sony Semiconductor 

CXB1454R

Recommendation for Cable and Connector Characteristics

The GVIF system uses terminators at both ends (transmitter and receiver), a cable equalizer and a small

amplitude differential signal. In order to solve the problems of high speed data transmission such as signal

reflection, reduce the signal level and EMI. In order to achieve the best solution, note the following:

Tx

termination

50Ω

Tx

LSI

Rx

termination

100Ω

Rx

LSI

Microstrip

line

(50Ω)

Foot

print

Connector

Cable

(diff. 100Ω)

Connector

Foot

print

Microstrip

line

(50Ω)

It is important to note the following issues for a good data transmission system:

• Good impedance matching

Differential impedance should be fit to the recommended template on the next page.

• Cable loss should be small and the loss curve should be smooth.

Maximum loss should be less than 15dB at 1GHz for the CXB1454R which has a built-in cable equalizer.

See the next page.

• Skew of POS/NEG (differential signal) should be small

Less than 12% of 1-bit time or 160ps@VGA, 100ps@SVGA, 60ps@XGA.

• Good EMI performance cable and connectors.

In order to satisfy these issues, the recommendations are as follows:

• Use the differential cable which provides good controlled impedance, low loss and good skew matching.

A shielded twisted pair (STP) cable is recommended.

• Use a low reflectance connector.

• To minimize interference from other signals, high speed signal lengths should be identical.

• Use double shielded cable.

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