From 4c90e08ebf8ecf6e0b21c6a24281cfdfadf566af Mon Sep 17 00:00:00 2001 From: Uwe Hermann Date: Thu, 19 Apr 2012 18:24:59 +0200 Subject: edid: Add some more docs in the README. --- i2c/edid/README | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'i2c') diff --git a/i2c/edid/README b/i2c/edid/README index 8c9ec32..52bcae9 100644 --- a/i2c/edid/README +++ b/i2c/edid/README @@ -1,3 +1,7 @@ +------------------------------------------------------------------------------- +EDID +------------------------------------------------------------------------------- + The captures in this directory were taken from a VGA cable, connected to various displays, as the EDID data was sent across the I2C bus. @@ -5,3 +9,29 @@ To decode these, set up a protocol decoder stack like this: i2c -> ddc -> edid +Details: +https://en.wikipedia.org/wiki/Extended_display_identification_data +https://en.wikipedia.org/wiki/Display_Data_Channel + + +samsung_le46b620r3p.sr / samsung_syncmaster245b.sr +-------------------------------------------------- + +The logic analyzer used was a Saleae Logic at 500kHz: + + Probe I2C pins + -------------------- + 1 (black) SDA + 2 (brown) SCL + + +samsung_syncmaster203b.sr +------------------------- + +The logic analyzer used was a Saleae Logic at 1MHz: + + Probe I2C pins + -------------------- + 1 (black) SCL + 2 (brown) SDA + -- cgit v1.2.3-54-g00ecf