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Application Report
SCPA033 - October 2002
1
PCI1520 Implementation Guide
Computer Connectivity Solutions
ABSTRACT
This document is provided to assist platform designers using the PCI1520 dual-socket PC
Card controller.
Detailed information can be found in the PCI1520 data manual.
However, this document provides design suggestions for the various options when
designing in the PCI1520.
Contents
1
PCI1520 Typical System Implementation ....................................................................................................................... 3
2
Power Considerations...................................................................................................................................................... 4
2.1
Internal Voltage Regulator ........................................................................................................................................ 4
2.2
Clamping Rails .......................................................................................................................................................... 4
2.3
Bypass Capacitors .................................................................................................................................................... 4
3
Power Switch Implementation ......................................................................................................................................... 5
4
PCI Bus Interface .............................................................................................................................................................. 6
5
PC Card Interface.............................................................................................................................................................. 7
6
Miscellaneous Pin Interface............................................................................................................................................. 8
6.1
Multifunction Terminals ............................................................................................................................................. 8
6.2
SPKROUT................................................................................................................................................................. 8
6.3
SUSPEND#............................................................................................................................................................... 8
7
Interrupt Configurations .................................................................................................................................................. 9
7.1
Parallel PCI Interrupts Only....................................................................................................................................... 9
7.2
Parallel IRQ and Parallel PCI Interrupts.................................................................................................................... 9
7.3
Serial IRQ and Parallel PCI Interrupts....................................................................................................................... 9
7.4
Serial IRQ and Serial PCI Interrupts ......................................................................................................................... 9
8
Software Considerations ............................................................................................................................................... 10
8.1
EEPROM Configuration .......................................................................................................................................... 10
8.2
BIOS Considerations............................................................................................................................................... 11
8.2.1
PCI Configuration Registers (Standard).................................................................................................... 11
8.2.2
PCI Configuration Registers (TI Extension) .............................................................................................. 12
8.2.3
ExCA Compatibility Registers ................................................................................................................... 12
8.2.4
CardBus Socket Registers........................................................................................................................ 12
9
Power Management Considerations ............................................................................................................................. 13
9.1
D3 Wake Information .............................................................................................................................................. 13
9.1.1
GRST# Only Registers ............................................................................................................................. 14
9.1.2
PME# Context Registers........................................................................................................................... 15
9.2
PME#/RI_OUT# Behavior ....................................................................................................................................... 15
9.3
CLKRUN# Protocol ................................................................................................................................................. 15
9.4
SUSPEND#............................................................................................................................................................. 16
10
Pin Compatibility with Other Devices ........................................................................................................................... 16
11
Migration to the PCI1520 from the PCI1420.................................................................................................................. 17
11.1 Hardware and Pin Assignment Changes ................................................................................................................ 17
11.2 Configuration Register Changes ............................................................................................................................. 18
11.3 Other Functional Differences .................................................................................................................................. 19
12
Migration to the PCI1420 from the PCI1225.................................................................................................................. 20
12.1 Hardware and Pin Assignment Changes ................................................................................................................ 20
12.2 Configuration Register Changes ............................................................................................................................. 21
12.3 Other Functional Differences .................................................................................................................................. 21
13
Reference Schematics ................................................................................................................................................... 22
14
References ...................................................................................................................................................................... 24