Service manual

2
2 – 8
Chipset
supporting chip - PC Card
SUPPORTING CHIPS
The following subsections describe major supporting chips:
• Ricoh 5C475 PCI-CardBus Bridge
• SMSC FDC37N869 PC 99 Compliant 5V and 3.3V Super I/O Controller with Infrared Support
• ATI RAGE LT PRO Graphics Controller
• RealTeck ALS300
+
Audio Controller
RICOH 5C475 PCI-CARDBUS BRIDGE
The 5C475 is a PC card controller offering a single chip solution as a bridge between PCI bus and CardBus. The
5C475 includes a PC Card 95 compliant socket interface and a bridge function to the PCI bus of 33MHz. The 5C475
can support the 32-bit CardBus (Card-32) and the 16-bit PC card (Card-16) without external buffers.
Concerning the card control interface, the 5C475’s register is compatible with the Intel 82365SL and Ricoh’s
RF5C396/366 in order to maintain backward compatibility with the existing 16-bit PC Card compliant with PCMCIA2.
1/JEIDA4.2. All PC card interface signals are individually buffered to allow direct connection to CardBus and Hot
insertion/removal without external buffers. The 5C475 also allows direct connection to PCI bus.
The PCI interface and PC card socket interface have their own power supply terminals that can be powered at
either 3.3V or 5V for compatibility with 3.3V and 5V signaling environments. The core logic is powered at 3.3V.
The 5C475 allows the system to be equipped with the high performance multimedia PC cards like the Video capture
card. It features:
• PC98 compliant
- PC98 Design Guide compliant (Subsystem ID, Subsystem Vender ID)
- ACPI 1.0 and PCI Bus Power Management 1.0 compliant
• Low Power consumption
- Hardware Suspend
- CLKRUN#, CCLKRUN# support
• High-performance
• Single Chip PCI-CardBus Bridge
- PCMCIA PC-Card 95 socket support
- CardBus (Card-32) Card and 16-bit (PCMCIA2.1/JEIDA4.2) Card support