| Q1: |
What is the LVDS differential signal pair configuration in the display interface applications? |
| A1: |
There are 4 differential pairs for the 21:3 configuration like the CS5820, namely three data pairs and one clock pair, and they are usually used on the 6-bit LCD panel interface. For the 28:4 configuration, there are five differential pairs, four data pairs and one clock pair, and they are usually used on the 8-bit LCD panel interface. |
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| Q2: |
Why is LVDS able to drive long cables? |
| A2: |
Because the LVDS uses current-mode driving configuration, and therefore there is less voltage attenuation. |
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| Q3: |
Why is LVDS capable of power saving? |
| A3: |
The power dissipated by the load (only at 100ohm load) is mere 1.2mW. Apart from the power dissipated in the load and static ICC current, LVDS also lowers system power through its CMOS current-mode drive design. |
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| Q4: |
Why is LVDS capable of reducing EMI? |
| A4: |
LVDS (low-voltage differential signaling) voltageˇ¦s swing level is only up to 450mv. The lower the voltage swing lever, the lower the EMI produced. |
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| Q5: |
Why does LVDS use twisted pair cables? |
| A5: |
The usage of twisted pair cables can prevent common mode noise. The common mode noise appeared at the twisted pair cable in the same time will be rejected by the receiver terminal, thus making sure the transmission is carried out correctly. |
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| Q6: |
What solution does Myson Century offer on Interface products? |
| A6: |
Myson Century offers:
CS5820 21:3 LVDS Transmitter
CS5821 21:3 LVDS Receiver
CS5822 TMDS Transmitter (160 MHz)
CS5823 TMDS Receiver (160 MHz)
CS5824 28:4 LVDS Transmitter (68MHz)
CS5825 28:4 LVDS Receiver
CS5826 Dual pixel/48-bit LVDS Transmitter
CS5827 Dual pixel/48-bit LVDS Receiver
CS5828 28:4 LVDS Transmitter (85MHz)
CS5829 28:4 LVDS Receiver (85MHz)
CS5830 Dual-Pixel LVDS Display Interface (LDI) Transmitter
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| Q7: |
What is LVDS? |
| A7: |
LVDS : (L)ow (V)oltage (D)ifferential (S)ignaling
LVDS is a low swing, differential signaling technology which allows single channel data transmission at hundreds of Megabits per second (Mbps) over 15 meters. Its low swing (300mV) and current mode driver outputs create low noise and provide a very low power consumption across frequency.
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| Q8: |
What are the benefits provided by LVDS? |
| A8: |
Higher transmission speeds.
Higher transmission speeds.
Lower power consumption.
Lower component costs.
Reduced EMI.
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| Q9: |
What is LVDS I/O standard? |
| A9: |
LVDS (low-voltage differential signaling) is a high-speed I/O interface that uses differential inputs without a reference voltage. |
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| Q10: |
What is CS5824 swing low voltage? |
| A10: |
The signal swing is only 300mV. |
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