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CL-PD6833

PCI-to-CardBus Host Adapter

Cirrus Logic 

CL-PD6833

PCI-to-CardBus Host Adapter

2.2 Pin Description Conventions

The following conventions apply to the pin description tables in Section 2.3:

q A pound sign (#) at the end of a pin name indicates an active-low signal for the PCI bus, CardBus, and

PCMCIA bus.

q A dash (-) at the beginning of a pin name indicates an active-low signal for the PCMCIA bus.

q An asterisk (*) at the end of a pin name indicates an active-low signal that is a general interface for the

CL-PD6833.

q A double-dagger superscript (‡) at the end of the pin name indicates signals that are used for power-on con-

figuration switches.

q A pin name ending in bracketed digits separated by a colon [n:n] indicates a multi-pin bus.

q The pin number (Pin Number) column indicates the package pin that carries the listed signal. Note that multi-

pin buses are listed with the first pin number corresponding to the most-significant bit of the bus. For example,

if pin numbers 4, 5, 7–12, 16–20, 22–24, 38–43, 45–46, 48–49, and 51–56 are associated with PCI Bus

Address Input and Data Input/Output pins AD[31:0], then the following pins correspond:

— AD31 is pin 4

— AD1 is pin 55

— AD0 is pin 56

q The quantity (Qty.) column indicates the number of pins used (per socket where applicable).

q The I/O-type code (I/O) column indicates the input and output configurations of the pins on the CL-PD6833.

The possible types are defined below.

q The power-type code (Pwr.) column indicates the output drive power source for an output pin or the pull-up

power source for an input pin on the CL-PD6833. The possible types are defined below.

I/O Type

I

I-PU

O

I/O

O-OD

O-TS

GND

PWR

Description

Input pin

Input pin with internal pull-up resistor

Constant-driven output pin

Input/output pin

Open-drain output pin

Tristate output pin

Ground pin

Power pin

Power Type Output or Pull-up Power Source

+5V: powered from a 5-volt power sup-

1

ply (in most systems, see description of

+5V pin in Table 2-4)

A_SOCKET_VCC: powered from the

2

Socket A VCC supply connecting to PC

Card pins 17 and 51 of Socket A

B_SOCKET_VCC: powered from the

3

Socket B VCC supply connecting to PC

Card pins 17 and 51 of Socket B

4

PCI_VCC: powered from the PCI bus

power supply

5

CORE_VDD: powered from a 3.3-volt

power supply

NOTE: All pin inputs are referenced to CORE_VDD, independent of their output supply voltage.

q The drive-type (Drive) column describes the output drive-type of the pin (see DC specifications in Chapter 15

for more information). Note that the drive type listed for an input-only (I) pin is not applicable (–).

12

PIN INFORMATION

ADVANCE DATA BOOK v0.3

June 1998

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