| Copyright © 1999 ARM Limited. All rights reserved. | DDI0170A |
| Non-Confidential | |
 PDF version | |
| Home > Designer’s Guide > Adding AHB slaves > AHB slave modifications |
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| Home > Designer’s Guide > Adding AHB slaves > AHB slave modifications |
When adding new AHB slaves, care should be taken to:
plan the slave position in the memory map
consider any issues concerning the remapping of memory to allow the external boot ROM to appear at location zero
decode as few address lines as possible, to keep the slave address decode section gate count low
ensure that all areas of address space have one, and only one, slave selected.
The default slave must be set so that all holes in the memory map are filled. If any holes are left without a slave to drive the HREADY line, then any accesses to this area will cause the system to lock, with HREADY staying LOW until a system reset.
| Copyright © 1999 ARM Limited. All rights reserved. | DDI0170A |
| Non-Confidential | |
| PDF version | |
| Home > Designer’s Guide > Adding AHB slaves > AHB slave modifications |