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1.3.5 PC Card Interface Controller: ENE CB1410
The ENE CB1410 is a high-performance PCI-to-PC Card controller that supports a single PC Card socket compliant
with the 1997 PC Card Standard. The ENE CB1410 provides features that make it the best choice for bridging
between PCI and PC Cards in both notebook and desktop computers. The 1997 PC Card Standard retains the 16-bit
PC Card specification defined in PCI Local Bus Specification and defines the new 32-bit PC Card, CardBus, capable
of full 32-bit data transfers at 33 MHz. The ENE CB1410 supports both 16-bit and CardBus PC Cards, powered at 5
V or 3.3 V, as required.
The ENE CB1410 is compliant with the PCI Local Bus Specification, and its PCI interface can act as either a PCI
master device or a PCI slave device. The PCI bus mastering is initiated during 16-bit PC Card DMA transfers or
CardBus PC Card bridging transactions. The ENE CB1410 is also compliant with the latest PCI Bus Power
Management Interface Specification and PCI Bus Power Management Interface Specification for PCI to CardBus
Bridges.
All card signals are internally buffered to allow hot insertion and removal without external buffering. The ENE
CB1410 internal data path logic allows the host to access 8-, 16-, and 32-bit cards using full 32-bit PCI cycles for
maximum performance. Independent buffering and a pipeline architecture provide an unsurpassed performance level
with sustained bursting. The ENE CB1410 can also be programmed to accept fast posted writes to improve system-
bus utilization.
Multiple system-interrupt signaling options are provided, including: parallel PCI, parallel ISA, serialized ISA, and
serialized PCI. Furthermore, general-purpose inputs and outputs are provided for the board designer to implement
sideband functions. Many other features designed into the ENE CB1410, such as socket activity light-emitting diode
(LED) outputs, are discussed in detail throughout the design specification.
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