The Texas Instruments PCI4451 is an integrated dual-socket PC Card controller and IEEE 1394 Open HCI host controller. This high-performance integrated solution provides the latest in both PC Card and IEEE 1394 technology.
The PCI4451 is a three-function PCI device compliant with _PCI Local Bus Specification 2.2_. Functions 0 and 1 provide the independent PC Card socket controllers compliant with the _1997 PC Card Standard_. The PCI4451 provides features that make it the best choice for bridging between the PCI bus and PC Cards, and supports any combination of 16-bit and CardBus PC Cards in the two sockets, powered at 5 V or 3.3 V, as required.
All card signals are internally buffered to allow hot insertion and removal without external buffering. The PCI4451 is register compatible with the Intel 82365SL-DF ExCA controller. The PCI4451 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 PCI4451 can be programmed to accept posted writes to improve bus utilization.
Function 2 of the PCI4451 is compatible with IEEE 1394A and the latest 1394 open host controller interface (OHCI) specifications. The chip provides the IEEE 1394 link function and is compatible with data rates of 100, 200, and 400 Mbits per second. Deep FIFOs are provided to buffer 1394 data and accommodate large host bus latencies. The PCI4451 provides physical write posting and a highly tuned physical data path for SBP-2 performance. Multiple cache line burst transfers, advanced internal arbitration, and bus holding buffers on the PHY/Link interface are other features that make the PCI4451 an excellent 1394 open HCI solution.
The PCI4451 provides an internally buffered zoomed video (ZV) path. This reduces the design effort of PC board manufacturers to add a ZV-compatible solution and ensures compliance with the CardBus loading specifications.
Various implementation specific functions and general-purpose inputs and outputs are provided through eight multifunction terminals. These terminals present a system with options in PC/PCI DMA, PCI LOCK and parallel interrupts, PC Card activity indicator LEDs, and other platform specific signals. ACPI-compliant general-purpose events may be programmed and controlled through the multifunction terminals, and an ACPI-compliant programming interface is included for the general-purpose inputs and outputs.
The PCI4451 is compliant with _PCI Bus Power Management Specification 1.1_, and provides several low-power modes which enable the host power system to further reduce power consumption. The _PC Card (CardBus) Controller_ and _IEEE 1394 Host Controller Device Class Specifications_ required for Microsoft OnNow Power Management are supported. Furthermore, an advanced complementary metal-oxide semiconductor (CMOS) process achieves low system power consumption.
_1997 PC Standard_ compliant
_PCI Bus Power Management Interface Specification 1.1_ compliant
ACPI 1.0 compliant
_PCI Local Bus Specification Revision_ 2.1/2.2 compliant
_PC 98/99_ compliant
Compliant with the _PCI Bus Interface Specification for PCI-to-CardBus Bridges_
Ultra zoomed Video
Zoomed video auto-detect
Advanced filtering on card detect lines provides 90 microseconds of noise immunity.
Programmable D3 status terminal
Internal ring oscillator
3.3-V core logic with universal PCI interfaces compatible with 3.3-V and 5-V PCI signaling environments
Mix-and-match 5-V/3.3-V PC Card16 cards and 3.3-V CardBus cards
Supports two PC Card or CardBus slots with hot insertion and removal
Uses serial interface to TI TPS2216 dual power switch
Supports 132 Mbyte/second burst transfers to maximize data throughput on both the PCI bus and the CardBus bus
Supports serialized IRQ with PCI interrupts
8 programmable multifunction terminals
Interrupt modes supported: serial ISA/serial PCI, serial ISA/parallel PCI, parallel PCI only.
Serial EEPROM interface for loading subsystem ID and subsystem vendor ID
Supports zoomed video with internal buffering
Dedicated terminal for PCI CLKRUN\
Four general-purpose event registers
Multifunction PCI device with separate configuration space for each socket
Five PCI memory windows and two I/O windows available to each PC Card16 socket
Two I/O windows and two memory windows available to each CardBus socket
ExCA-compatible registers are mapped in memory or I/O space
Supports distributed DMA and PC/PCI DMA
Intel 82365SL-DF register compatible
Supports 16-bit DMA on both PC Card sockets
Supports ring indicate, SUSPEND\, and PCI CLKRUN\
Advanced submicron, low-power CMOS technology
Provides VGA/palette memory and I/O, and subtractive decoding options
LED activity terminals
Supports PCI bus lock (LOCK\\)
Packaged in a 256-terminal BGA or 257-terminal MicroStar BGA
OHCI link function designed to _IEEE 1394 Open Host Controller Interface (OHCI) Specification_
Implements PCI burst transfers and deep FIFOs to tolerate large host latency
Supports physical write posting of up to three outstanding transactions
OHCI link function is IEEE 1394-1995 compliant and compatible with Proposal 1394a
Supports serial bus data rates of 100, 200, and 400 Mbits/second
Provides bus-hold buffers on the PHY-Link I/F for low-cost single capacitor isolation
MicroStar BGA is a trademark of Texas Instruments.
Intel is a trademark of Intel Corporation.
Microsoft is a trademark of Microsoft Corporation.
