KnowHow_LineCoding

Max Horn edited this page Jan 5, 2016 · 3 revisions

SC5262 / SC5272, HX2262 / HX2272, PT2262 / PT2272

Pulse length

  • About 300 to 500 microseconds
  • 1/31 time of the synchronization low level.

Synchronization

  • 1 Pulse High + 31 Pulses Low

Bits

  • 0: 1 Pulse High + 3 Pulses Low + 1 Pulse High + 3 Pulses Low
  • 1: 3 Pulses High + 1 Pulse Low + 3 Pulses High + 1 Pulse Low
  • F: 1 Pulse High + 3 Pulses Low + 3 Pulses High + 1 Pulse Low

(As the bits can be substituted to two states, this is actually the same encoding like the EV1527 and similar chips below)

Telegram

  • at least 3 times: 12 Tri-state (==24 Two-state) data bits + Sync Bit

images/linecode_tristate.png


EV1527, RT1527, FP1527 or HS1527

Pulse length

  • About 300 to 500 microseconds
  • 1/31 time of the synchronization low level.

Synchronization

  • 1 Pulse High + 31 Pulses Low

Bits

  • 0: 1 Pulse High + 3 Pulses Low
  • 1: 3 Pulses High + 1 Pulse Low

Telegram

  • at least 3 times: Sync Bit + 24 Two-state data bits

images/linecode_twostate.png

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