CL-PD6833-VC-A View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'CL-PD6833-VC-A' PDF : 216 Pages View PDF
CL-PD6833
PCI-to-CardBus Host Adapter
3.1.7.3 Card Insertion
Power to the socket is off at reset and whenever there is no card in a socket. When a card is detected (card
detect input pins, CD1# and CD2#, to the CL-PD6833 become asserted low), power is applied by software
after sensing card insertion. Card insertion is sensed by allowing any change in state on the CD2# and CD1#
pins to generate a management interrupt.
3.1.8
Bus Sizing
The CL-PD6833 supports 32-bit transactions on the PCI bus while supporting 8- or 16-bit PC Cards.
3.1.9
Programmable PC Card Timing
The CL-PD6833 can be programmed to match the timing requirements of any PC Card. The memory com-
mand signals (WE#, OE#) and I/O command signals (IOWR#, IORD#) at the PC Card interface have three
phases: setup, command, and recovery. These three phases are programmed by the timing registers on a
per socket basis. There are two sets of timing registers, Timer Set 0 and Timer Set 1, which can be selected
on a per-window basis for both I/O and memory windows.
3.1.10 ATA Mode Operation
The CL-PD6833 supports direct connection to ATA hard drives when in PC Card 16 mode. ATA drives use
an interface very similar to the IDE interface found on many popular portable computers.
3.1.11 PC Card Sensing
The CL-PD6833 provides sensing capabilities for all types of cards and voltages compliant with the PC
Card Specification. This includes the following card types:
q PC Card 16 (R2) at 5.0 or 3.3 V
q PC Card 32 (CardBus) at 3.3 V
The pins CD2#, CD1#, VS2, and VS1 are used to sense the types and operating voltages of inserted
cards, as shown in Table 3-6. The x.x and y.y operating voltages are detected and reflected in the Present
State register (memory offset 008h). Values of these voltages are not yet defined by the PC Card Speci-
fication.The CL-PD6833 assumes a low-voltage key (CardBus-capable socket in system). After PC Card
insertion, card type and voltage information is available in the Socket Present State register.
June 1998
ADVANCE DATA BOOK v0.3
37
INTRODUCTION TO THE CL-PD6833
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