Xenon (Motherboard)/Prototypes
There are 12 major prototypes of the Xenon motherboard. The production board is the 11th version, Fab K, (-011).
Fab A (-001)
First motherboard. Used with Willow and Alpha kits, with or without Shiva CPU. No GPU. Various Southbridge and ANA versions.
- Part Number: X801054-001
Fab B (-002)
First fully working motherboard. Typically uses Shiva CPU and A11N1 or A11N2 GPU. Various Southbridge and ANA versions. Introduces optional Backup Clock Generator.
- Part Number: X801054-002
The following image has been upscaled for clarity:
Fab C (-003)
Not taped out. Purpose not known.
- Part Number: X801054-003
Fab D (-004)
Updated VREG. Little else is known.
- Part Number: X801054-004
Fab E (-005)
First motherboard to use Waternoose DD1 CPU out of the factory. Typically uses A11N2 GPU, E2 Southbridge, and B00 ANA. Removes Shiva support.
- Part Number: X801054-005
Fab F (-006)
Updated VREG. Little else is known.
- Part Number: X801054-006
Fab G (-007)
Also used for XeDK program. Typically uses Waternoose DD1 CPU, A11N2 or A21N2 GPU, E2 or G0 Southbridge, and B00 ANA. Removes several Debug LEDs.
- Part Number: X801054-007
Fab H (-008)
First motherboard to use Waternoose DD2 CPU out of the factory. Uses A31 or A32 GPU, G0 Southbridge, and B02 ANA. The CPU is fused to 3.2GHz. Significant minor fixes.
- Part Number: X801054-008
Fab J (-009)
Part number changed to X803600. Uses Waternoose DD2 CPU, A32 GPU, G0 Southbridge, and B02 ANA. The CPU is fused to 2.8GHz. Fixed easily breakable IR sensor. Removes Titan support and almost all Debug LEDs. Adds additional but unused fan header. Most boards have an X-patch applied to fix a bug in GPU A32. Many were refurbished with 3.2GHz fused CPUs and used as Development Kits.
- Part Number: X803600-009
Fab J Prime (-010)
Derivative of Fab J, but 6-layer board. The PCB color is purple. Uses Waternoose DD2 CPU, A32 GPU, G0 Southbridge, and B02 ANA. The CPU is fused to 3.2GHz. The purpose of this board is unknown.
- Part Number: X803600-010
Fab K (-011)
The final motherboard. See Xenon (Motherboard) for details. Integrates the GPU A32 X-patch into the motherboard.
- Part Number: X803600-011
Fab M (-012)
Only used internally. 6-layer board. Adds top-side test-points for POST_OUT. Otherwise, identical to Fab K.
- Part Number: X803600-012