Waternoose

From XenonLibrary
Revision as of 10:52, 19 January 2023 by Octal450 (talk | contribs) (Octal450 moved page Waternoose (CPU) to Waternoose without leaving a redirect)
Jump to navigation Jump to search
Waternoose
X02046-001.jpg
DD1.0
File:X02046-008.jpg
DD2.1
X806416-008.jpg
DD3.0
Part NumberX02046
X806416
IntroducedLate 2005
Designed ByIBM
Microsoft
TypeXCPU
Used InXenon
Zephyr
Elpis
Clock Speed2.8-3.2GHz
CacheL1: 32KB/32KB
L2: 1MB
Instruction SetPowerPC RISC
Cores3
Threads6
Process90nm
TDP85W (DD1.0/DD2.0)
75W (DD2.1/DD3.0)
PackageFlip-chip BGA899
SuccessorLoki

The Waternoose series are the original production model of the XCPU used in the Xbox 360. They have 75-85W TDPs and are manufactured on a 90nm process.

Specifications

  • 3 two-way SMD-capable RISC cores clocked at 3.2GHz
  • SIMD: Two VMX128 units
  • 32KB L1 data cache
  • 32KB L1 instruction cache
  • 1MB L2 cache at 1.6 GHz with a 256-bit bus
  • 21.6GB/s FSB
  • 768 bits of IBM eFUSE One-Time-Program memory for fusesets
  • One-Time-Programmable ROM and 64KB SRAM for the 1BL and Config Ring
  • Big-endian architecture
  • 90nm process
  • TDP:
    • 85W (DD1.0/DD2.0)
    • 75W (DD2.1/DD3.0)

Details

DD1.0

DD1.0, is the engineering sample of the XCPU, labelled XCPU-ES. It runs at 2.8GHz as opposed to the final speed of 3.2GHz. The ROM does not contain a 1BL, and thus these CPUs can only boot with a Titan board, which injects the 1BL. It still has the original Xbox logo as it was created before the Xbox 360 name was chosen.

  • Part Number: X02046-001
  • Foundry: Canada Foundry

DD2.0

DD2.0, is the production version of the XCPU running at 3.2GHz. It also contains a programmed ROM containing the 1BL. Versions with part number X02046-002 used in certain pre-final consoles were still labelled "XCPU-ES" and still had the original Xbox logo.

  • Part Numbers:
    • X02046 (except -001 suffix)
  • Foundries:
    • Canada Foundry

DD2.1

DD2.1 is a revision of DD2.0, with the notable change of reducing the TDP to 75W from the initial 85W. The part number remains the same, however the suffix may be different.

DD3.0

DD3.0 is a revision of DD2.x that fixes minor design issues on the DD2.x chips. It also adds little-endian support for Original Xbox Emulation.

  • Part Numbers:
    • X806416
  • Foundries:
    • Canada Foundry