RL5C476A

The RL5C476A is a PC card controller offering a single chip solution as a bridge between PCI bus and CardBus. It includes two PC Card 95 compliant sockets interface and a bridge function to the PCI bus of 33Mhz.It can support the 32-bit CardBus(Card-32) and the 16-bit PC card(Card-16) without external buffers.

Features of the RL5C476A are:(1)3.3V/5V mixed voltage operation at 33Mhz; (2)GPIO support; (3)posting write and prefetching read support; (4)plug and play support; (5)16-bit legacy mode (3E0/3E2 I/O port) support; (6)compliant with PCMCIA PC Card 95cardbus(PC Card-16) Standard specification; (7)5 programmable memory windows; (8)2 programmable I/O windows; (9)compliant with i82365SL compatible register set/ExCA TM.In this chapter, the detailed signal pins in RL5C476A are explained. Every signal is divided according to their relational interface.Card Interface signal pin is multi-functional pin. Card Interface mode is configured automatically by the card insertion;CardBus card or 16-bit card. And the pin function is redefined again.

The absolute maximum ratings of the RL5C476A can be summarized as:(1)supply voltage range1:-0.3 to 6.6V;(2)storage temperature range:-55 to 125;(3)ambient temperature under bias:-40 to 85;(4)supply voltage range2:-0.3 to 5.0V;(5)voltage on any pin:-0.3 to Vcc+0.3V.Stresses above those listed may cause permanent damage to system components. These are stress ratings only. Functional operation at these or any conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect system reliability.We are making our continuous effort to improve the quality and reliability of our products, but semiconductor products are likely to fail with certain probability. In order prevent any injury to persons or damages to property resulting from such failure, customers should be careful enough to incorporate safety measures in their design,such as redundancy feature, fire-containment feature and fail-safe feature.  We do not assume any liability or responsibility for any loss or damage arising from misuse or inappropriate use of the products.