PCI6620 datasheet(13/160 Pages) TI

13 / 160 page

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1 Introduction

The Texas Instruments PCI6620 device is an integrated dual-socket PC Card controller, Smart Card controller, and

Secure Digital (SD)/MultiMediaCard (MMC), and Memory Stick (MS)/MS-Pro controller. This high-performance

integrated solution provides the latest in PC Card, Smart Card, SD, MMC, and Memory Stick technology.

The Texas Instruments PCI6420 device is an integrated dual-socket PC Card controller and SD/MMC MS/MS-Pro

controller. This high-performance integrated solution provides the latest in PC Card, SD, MMC, and Memory Stick

technology.

For the remainder of this document, PCI6x20 refers to both devices: PCI6620 and PCI6420.

1.1

Description

The PCI6620 and PCI6420 are three-function PCI devices compliant with PCI Local Bus Specification, Revision 2.3.

Functions 0 and 1 provide the independent PC Card socket controllers compliant with the PC Card Standard

(Release 8.0). The PCI6x20 device provides features that make it the best choice for bridging between the PCI bus,

PC Cards, and Smart Cards and supports any combination of 16-bit, CardBus PC Cards, or Smart Card adapter in

the socket powered at 5 V or 3.3 V, as required.

There are no PCMCIA card and socket service software changes required to move systems from the existing

CardBus socket controller to the PCI6x20 device. The PCI6x20 device is register compatible with the Intel

82365SL-DF ExCA controller and implements the host interface defined in the PC Card Standard. The PCI6x20

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 the pipeline architecture provide an unsurpassed performance level with

sustained bursting. The PCI6x20 device can be programmed to accept posted writes to improve bus utilization. All

card signals are internally buffered to allow hot insertion and removal without external buffering.

The PCI configuration header is accessed through configuration cycles specified by PCI, and it provides

plug-and-play (PnP) compatibility. Furthermore, the PCI6x20 device is compliant with the PCI Bus Power

Management Interface Specification. The PCI6x20 device supports the D0, D1, D2, and D3 power states.

The PCI6x20 design provides PCI bus master bursting, and is capable of transferring a cacheline of data at

132M bytes/s after connection to the memory controller. Because PCI latency can be large, deep FIFOs are provided

to buffer the data.

The PCI6x20 device provides physical write posting buffers and a highly-tuned physical data path for SBP-2

performance. The PCI6x20 device also provides multiple isochronous contexts, multiple cacheline burst transfers,

advanced internal arbitration, and bus-holding buffers.

Function 3 of the PCI6620 and PCI6420 devices is a dedicated socket that supports SD, MMC, Memory Stick, and

Memory Stick-Pro cards. The Flash Media dedicated socket provides separate terminals for SD/MMC and Memory

Stick signals so that both an SD/MMC card and a Memory Stick/Memory Stick-Pro card can be used concurrently.

Various implementation specific functions and general-purpose inputs and outputs are provided through eight

multifunction terminals. These terminals present a system with options in PCI LOCK, serial and parallel interrupts,

PC Card activity indicator LEDs, and other platform specific signals. PCI-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 PCI6x20 device is compliant with the latest PCI Bus Power Management Specification, and provides several

low-power modes, which enable the host power system to further reduce power consumption.

The PCI6x20 device also has a three-pin serial interface compatible with both the Texas Instruments TPS2226 and

TPS2228 power switches. The TPS2226 or TPS2228 power switch provides power to the two CardBus sockets on

PCI6620 Datasheet(PDF) 13 Page - Texas Instruments

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