
Introduction
4
September 2005
SCPS110
2.1
Controller Functional Description
2.1.1 PCI4512 Controller
The PCI4512 controller is a two-function PCI controller compliant with PCI Local Bus Specification,
Revision 2.3.
Function 0 provides an independent PC Card socket controller compliant with the PC Card Standard
(Release 8.1). The PCI4512 controller provides features that make it the best choice for bridging between the
PCI bus and PC Cards, and supports Smart Card, 16-bit, CardBus, or USB custom card interface PC Cards,
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
PCI4512 controller is register compatible with the Intel 82365SL-DF ExCA controller. The PCI4512 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 PCI4512 controller can be programmed to accept posted writes to improve bus
utilization.
Function 1 of the PCI4512 controller is compatible with IEEE Std 1394a-2000 and the latest 1394 Open Host
Controller Interface Specification. The chip provides the IEEE1394 link and 2-port PHY 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 PCI4512 controller provides physical write posting and
a highly tuned physical data path for SBP-2 performance.
2.1.2 PCI6412 Controller
The PCI6412 controller is a three-function PCI controller compliant with PCI Local Bus Specification,
Revision 2.3.
Function 0 provides an independent PC Card socket controller compliant with the PC Card Standard
(Release 8.1). The PCI6412 controller provides features that make it the best choice for bridging between the
PCI bus and PC Cards, and supports Smart Card, 16-bit, CardBus, or USB custom card interface PC Cards,
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
PCI6412 controller is register compatible with the Intel 82365SL-DF ExCA controller. The PCI6412 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 PCI6412 controller can be programmed to accept posted writes to improve bus
utilization.
Function 2 of the PCI6412 controller is a PCI-based Flash Media controller that supports Memory Stick,
Memory Stick-Pro, SmartMedia, xD, SD, and MMC cards. This function controls communication with these
Flash Media cards through a dedicated Flash Media socket. In addition, this function includes DMA
capabilities for improved Flash Media performance.
Function 3 of the PCI6412 controller is a PCI-based SD host controller that supports MMC, SD, and SDIO
cards. This function controls communication with these Flash Media cards through a dedicated Flash Media
socket. In addition, this function is compliant with the SD Host Controller Standard Specification and includes
DMA capabilities, support for high-speed mode, and support for SD suspend/resume.