PMB8878

This is the baseband processor used in the iPhone 3G. It is upgraded with BBUpdaterExtreme. It is also known as the PMB8878

Datasheet
Anyone got one? Infineon provides this, which isn't really useful.

Memory Map
FLASH     0x20000000 0x1000000 CODE      0x20000000   0x40000 0b0010(bootstrapper) CODE      0x20040000  0xDC0000 0b0100(main firmware) FFS       0x20A00000  0x100000 0b1100(empty) DYNFFS    0x20A00000  0x100000 0b1100(empty) FFS       0x20B00000   0x40000 0b1011(empty) DYN_EEP   0x20E40000   0x80000 0b0110 SECPACK   0x20EC0000   0x40000 SECZONE   0x20F80000   0x40000 STATIC_EEP 0x20FC0000  0x40000 0b0111 RAM       0x40000000  0x800000

Known Firmware Versions
1.43.00   2.0 (Build 5A331 - Internal Beta) 1.45.00   2.0 (Build 5A347 - Gold Master) 1.48.02   2.0.1(Build 5B108) 2.04.03   2.1 (Build 5F90)

Accessing Interactive Mode
Interactive mode isn't accessed by sending characters to the baseband. Instead a GPIO pin is raised with a kernel call to preupdate reset. result = IOConnectCallScalarMethod(conn, 0, 0, 0, 0, 0);	//reset result = IOConnectCallScalarMethod(conn, 1, 0, 0, 0, 0);	//power set result = IOConnectCallScalarMethod(conn, 2, 0, 0, 0, 0);	//configuring mux result = IOConnectCallScalarMethod(conn, 7, 0, 0, 0, 0);	//powercycle result = IOConnectCallScalarMethod(conn, 8, 0, 0, 0, 0);	//preupdate reset