LVDS interface definition

LVDS interface Also known as RS-644 bus interface, it is a data transmission and interface technology that only appeared in the 1990s. LVDS is a low voltage differential signal. The core of this technology is to use extremely low voltage swing to transmit data at high speed differentially. It can realize point-to-point or point-to-multipoint connection. It has the characteristics of low power consumption, low bit error rate, low crosstalk and low radiation. Its transmission medium can be copper PCB connection or balanced cable. LVDS has been more and more widely used in systems with high requirements for signal integrity, low jitter and common mode characteristics. At present, there are two popular LVDS technical specifications: one is the ANSI/TIA/EIA-644 standard of TIA/EIA (Telecommunications Industry Alliance/Electronic Industries Alliance), and the other is the IEEE 1596.3 standard.

20PIN single 6 definition:
1: power 2: power 3: ground 4: ground 5: R0- 6: R0+ 7: ground 8: R1- 9: R1+ 10: ground 11: R2- 12: R2+ 13: ground 14: CLK- 15: CLK+ 16 empty 17 empty 18 empty 19 empty 20 empty
The resistance between each group of signal lines is (about 120 ohms on the digital meter)

20PIN double 6 definition:
1: power 2: power 3: ground 4: ground 5: R0- 6: R0+ 7: R1- 8: R1+ 9: R2- 10: R2+ 11: CLK- 12: CLK+ 13: RO1- 14: RO1+ 15: RO2- 16: RO2+ 17: RO3- 18: RO3+
19: CLK1- 20: CLK1+
The resistance between each group of signal lines is (about 120 ohms on the digital meter)

20PIN single 8 definition:
1: Power 2: Power 3: Ground 4: Ground 5: R0- 6: R0+ 7: Ground 8: R1- 9: R1+ 10: Ground 11: R2- 12: R2+ 13: Ground 14: CLK- 15: CLK+ 16: R3- 17: R3+
The resistance between each group of signal lines is (about 120 ohms on the digital meter)

30PIN single 6 definition:
1: Empty 2: Power 3: Power 4: Empty 5: Empty 6: Empty 7: Empty 8: R0- 9: R0+ 10: Ground 11: R1- 12: R1+ 13: Ground 14: R2- 15: R2+ 16: Ground 17: CLK- 18: CLK+ 19: Ground 20: Empty- 21: Empty 22: Empty 23: Empty 24: Empty 25: Empty 26: Empty 27: Empty 28 Empty 29 Empty 30 Empty
The resistance between each signal line is (about 120 ohms on a digital meter)

30PIN single 8 definition:
1: Empty 2: Power 3: Power 4: Empty 5: Empty 6: Empty 7: Empty 8: R0- 9: R0+ 10: Ground 11: R1- 12: R1+ 13: Ground 14: R2- 15: R2+ 16: Ground 17: CLK- 18: CLK+ 19: Ground 20: R3- 21: R3+ 22: Ground 23: Empty 24: Empty 25: Empty 26: Empty 27: Empty 28 Empty 29 Empty 30 blank
The resistance between each signal line is (about 120 ohms on the digital meter)

30PIN double 6 definition:
1: power 2: power 3: ground 4: ground 5: R0- 6: R0+ 7: ground 8: R1- 9: R1+ 10: ground 11: R2- 12: R2+ 13: ground 14: CLK- 15: CLK+ 16: ground 17: RS0- 18: RS0+ 19: ground 20: RS1- 21: RS1+ 22: ground 23: RS2- 24: RS2+ 25: ground 26: CLK2- 27: CLK2+
The resistance between each signal line is (about 120 ohms on the digital meter)

30PIN double 8 definition:
1: power 2: power 3: power 4: blank 5: blank 6: blank 7: ground 8: R0- 9: R0+ 10: R1- 11: R1+ 12: R2- 13: R2+ 14: Ground 15: CLK- 16: CLK+ 17: Ground 18: R3- 19: R3+ 20: RB0-21: RB0+ 22: RB1- 23: RB1+ 24: Ground 25: RB2- 26: RB2+ 27: CLK2- 28: CLK2+ 29: RB3- 30: RB3+
The resistance between each group of signal lines is (about 120 ohms on the digital meter).
Generally, 14PIN, 20PIN and 30PIN are LVDS interfaces.