Texas Instruments DUAL SOCKET PC CARD CONTROLLER PCI1520 - Manual

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