KSB

KSB

Part Number	X850744
Introduced	Mid 2011
Designed By	Microsoft SiS
Type	Southbridge
Used In	Corona Winchester
Process	150nm
TDP	4W
Package	Flip-chip BGA404
Predecessor	PSB HANA

KSB is the final Southbridge used in the Xbox 360. It is the successor to PSB. Major changes include the integration of the HANA and Ethernet PHY directly into the KSB.

Specifications

• Intel 8051 processor core (SMC)
• PCI-Express x2 interface (for the BSB)
• Serial-ATA (SATA) interface
• USB1.1/2.0 interface
• IR interface
• Wireless game controller interface (for the RF Board)
• WMA Pro audio hardware
• Nand flash interface
• Ethernet Media Access Controller (MAC)
• Digital video encoder with 4 DACs
• HDMI video and audio encoder
• 5 thermal diode channels
• 2 fan driver op-amps
• Power on reset logic cell
• Clock synthesizer:
  • 4x 100MHz differential: CPU, GPU, PCIe, SATA
  • 1x 48MHz single ended: SMC, USB
  • 2x 25MHz single ended: Ethernet, SATA
  • 1x 24.576MHz single ended: Audio
  • 2x programmable clocks: DVE video, Pixel
• 150nm process
• 4W TDP

Details

• Part Number: X850744
• Foundry: