Non-Transparent PCI-TO-PCI

Using a Flash ROM with the 21555 Non-Transparent PCI-to-PCI Bridge

Application Note

June 2001

Order Number: 278384-001

Application Note

Using a Flash ROM with the 21555 Non-Transparent PCI-to-PCI Bridge Contents

1.0Introduction (1)

2.0Hardware Description (1)

2.1Supported Flash ROMs (1)

2.2Hardware Configuration (1)

2.3Timing (2)

3.0Flash ROM Access (3)

3.1Flash ROM Read by CSR Access (3)

3.2Flash ROM Write by CSR Access (5)

3.3Flash ROM Read by PCI Access (6)

4.0Multiple Device Attachment (6)

4.1Attaching Multiple Devices (7)

4.2Hardware Configuration (7)

Figures

1Flash ROM Hardware Configuration (2)

2Read and Write Strobe Timing (3)

3Parallel ROM Read Timing (4)

4Parallel ROM Write Timing (6)

5Multiple Device Attachment on ROM Interface (8)

Tables

1Flash ROM Interface Signals (2)

Application Note iii

Using a Flash ROM with the 21555 Non-Transparent PCI-to-PCI Bridge

Using a Flash ROM with the 21555 Non-Transparent PCI-to-PCI Bridge

Using a Flash ROM with the 21555 Non-Transparent PCI-to-PCI Bridge

Using a Flash ROM with the 21555 Non-Transparent PCI-to-PCI Bridge

Using a Flash ROM with the 21555 Non-Transparent PCI-to-PCI Bridge

Using a Flash ROM with the 21555 Non-Transparent PCI-to-PCI Bridge

Using a Flash ROM with the 21555 Non-Transparent PCI-to-PCI Bridge

Using a Flash ROM with the 21555 Non-Transparent PCI-to-PCI Bridge