Southbridge

Located between the CPU (CELL BE) and the lower I/O devices (SATA/PATA: Bluray Drive/Harddrive, USB, GbLAN, Wifi/Bluetooth, Flash (Hardware): Starship2+NAND / NOR, MultiCardReader etc) via a Flex I/O bus (CellBE : BIC / IOIF1).

Chipnumers @ SKU's

PS3 Southbridge
SB with heatplate
CXD2973GB

PS3 Southbridge
SB without heatplate
CXD2984AGB

PS3 Southbridge
SB without heatplate
CXD9963GB

PS3 Model	Mobo Model	Mobo serial	SB Serial	part no.	Comp.ID
CECHAxx	COK-001	1-871-868-12 1-871-868-22 1-871-868-32	CXD2973GB	8-753-257-50	IC3001
CECHBxx	COK-001	1-871-868-12 1-871-868-22 1-871-868-32	CXD2973GB	8-753-257-50	IC3001
CECHCxx	COK-002	1-873-513-21 1-873-513-31	CXD2979GB
CECHDxx	SKU never released
CECHExx	COK-002W		CXD2979GB
CECHFxx	SKU never released
CECHGxx	SEM-001	1-875-384-21 1-875-384-31	CXD2984GB
CECHHxx	DIA-001	1-875-368-11 1-875-368-31	CXD2984GB
CECHIxx	SKU never released
CECHJxx	DIA-002	1-876-912-32	CXD2984GB
CECHKxx	DIA-002	1-876-912-32	CXD2984GB
CECHLxx	VER-001	1-878-196-31 1-878-196-41	CXD2984AGB
CECHMxx	VER-001	1-878-196-31 1-878-196-41	CXD2984AGB
CECHNxx	SKU never released
CECHOxx	SKU never released
CECHPxx	VER-001	1-878-196-31 1-878-196-41	CXD2984AGB
CECHQxx	VER-001	1-878-196-31 1-878-196-41	CXD2984AGB
CECH-20xx	DYN-001	1-880-055-31	CXD9963GB
CECH-21xx	SUR-001	1-881-945-11	CXD9963GB
CECH-25xx	JTP-001	1-882-481-31	CXD9963GB
CECH-25xx	JSD-001	1-882-770-11	CXD9963GB
CECH-30xx	KTE-001	1-884-749-11	CXD9963GB
CECH-40xx	MSX-001	1-886-928-11	CXD9963GB

SuperCompanionChip - Making Optimal Use of Cell Broadband Engine: SuperCompanionChip_English.pdf / a04.pdf
Whitepaper - BCU-100 Computing Unit with Cell/B.E. and RSX: BCU-100_Whitepaper.pdf
Presentation - Super Companion Chip with Audio Visual Interface for Cell Processor : HC17.S1T3.pdf