lvds interface definition
LVDS interface, also known as RS-644 bus interface, 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 a very low voltage swing for high-speed differential transmission of data, which can realize point-to-point or point-to-multipoint connection. It has low power consumption, low bit error rate, low crosstalk and For low-emission characteristics, the transmission medium can be a copper PCB connection or a balanced cable. LVDS has been more and more widely used in systems that require high signal integrity, low jitter and common model performance. At present, the popular LVDS technical specifications have two standards: one is TIA / EIA (Telecommunications Industry Alliance / Electronic Industry Alliance) ANSI / TIA / EIA-644 standard, and the other is 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 for digital watches)
20PIN double 6 definition:
1: Power supply 2: Power supply 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 for digital watches)
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 for digital watches)
30PIN single 6 definition:
1: empty 2: power supply 3: power supply 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 group of signal lines is (The digital watch is around 120 Euros)
30PIN single 8 definition:
1: empty 2: power supply 3: power supply 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 Empty The resistance between each group of signal lines is (The digital watch is around 120 Euros)
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 group of signal lines is (about 120 ohms for digital watches)
30PIN double 8 definition:
1: power supply 2: power supply 3: power supply 4: empty 5: empty 6: empty 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 for digital watches)
Generally, 14PIN, 20PIN, and 30PIN are LVDS interfaces.
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