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-rw-r--r--ac97/analog_devices_ad1981a/README39
-rw-r--r--ac97/analog_devices_ad1981a/ac97_ad1981a_powerup1.srbin0 -> 1620477 bytes
-rw-r--r--ac97/analog_devices_ad1981a/ac97_ad1981a_powerup1_100mhz.srbin0 -> 2999666 bytes
-rw-r--r--ac97/analog_devices_ad1981a/ac97_ad1981a_powerup2.srbin0 -> 9425 bytes
-rw-r--r--ac97/analog_devices_ad1981a/ac97_ad1981a_powerup2_100mhz.srbin0 -> 17535 bytes
5 files changed, 39 insertions, 0 deletions
diff --git a/ac97/analog_devices_ad1981a/README b/ac97/analog_devices_ad1981a/README
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+-------------------------------------------------------------------------------
+Analog Devices AD1981A: AC'97 data
+-------------------------------------------------------------------------------
+
+This is set of example captures of the AC'97 data on an Analog Devices
+AD1981A AC'97 2.2 audio codec.
+
+Details:
+https://en.wikipedia.org/wiki/AC%2797
+https://www.analog.com/en/products/ad1981a.html
+
+
+Logic analyzer setup
+--------------------
+
+The logic analyzer used was a Saleae Logic16 (at 50/100 MHz):
+
+ Probe AD1981A
+ -------------------
+ 0 BIT_CLK
+ 1 SDATA_IN
+ 2 SYNC
+ 3 RESET# (only in the 50MHz captures)
+
+SDATA_OUT never toggled, so it was omitted.
+
+
+ac97_ad1981a_powerup1*.sr
+-------------------------
+
+The data is the first chunk of traffic that occurs on an random mainboard
+(which contains the AD1981A) during BIOS power-up.
+
+
+ac97_ad1981a_powerup2*.sr
+-------------------------
+
+Same as above, but this is a snippet of the second chunk of data that occurs
+a few seconds after the first chunk.
diff --git a/ac97/analog_devices_ad1981a/ac97_ad1981a_powerup1.sr b/ac97/analog_devices_ad1981a/ac97_ad1981a_powerup1.sr
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diff --git a/ac97/analog_devices_ad1981a/ac97_ad1981a_powerup1_100mhz.sr b/ac97/analog_devices_ad1981a/ac97_ad1981a_powerup1_100mhz.sr
new file mode 100644
index 0000000..f2cc670
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diff --git a/ac97/analog_devices_ad1981a/ac97_ad1981a_powerup2.sr b/ac97/analog_devices_ad1981a/ac97_ad1981a_powerup2.sr
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index 0000000..6f30767
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diff --git a/ac97/analog_devices_ad1981a/ac97_ad1981a_powerup2_100mhz.sr b/ac97/analog_devices_ad1981a/ac97_ad1981a_powerup2_100mhz.sr
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