A.3. APB signals

The TZASC provides a single APB slave interface. Table A.12 lists the APB slave interface signals.

Table A.12. APB slave interface signals

Signal AMBA equivalent [a]
paddr[31:0]PADDR
penablePENABLE
prdata[31:0]PRDATA
pready [b]PREADY
pselPSELx
pslverr[b]PSLVERR
pwdata[31:0]PWDATA
pwritePWRITE

[a] See the relevant AMBA specification for a description of these signals.

[b] This signal is not available if the TZASC is configured to support the AMBA 2 APB protocol.


Note

Depending on the configuration of the TZASC, the following section describe the AMBA APB signals:

  • AMBA Specification (Rev 2.0)

  • AMBA 3 APB Protocol v1.0 Specification.

Copyright © 2008, 2010 ARM Limited. All rights reserved.ARM DDI 0431B
Non-Confidential