what is amba v6 extension ?

[samuel]

I need reuse a soft IP in my project, which has some AMBA v6 extension
signals such as ahb_bstrb[3:0] and ahb_unalign and ahb_protection[5:0],
besides the standard ahblite 2.0 master interface signals.
I have tried to google the information about the AMBA v6 extension ,
but found nothing.
Could anyone can tell me where I can find the spec or detailed
description about the AMBA v6 extension ?
Thanks in advance !

[Joseph]

They are AHB extension signals for ARM1136.
Try look at the Technical Reference Manual of ARM1136
http://www.arm.com/pdfs/DDI0211H_arm1136_r1p1_trm.pdf
on Level 2 Interface section

Joseph

[John Penton]

I think it is worth clarifying this.

The AMBA spec is currently at version 3, which describes AXI and APB.
AHB was described in AMBAv2, but ARM1136 required some extensions to this,
which (I believe) are known as the "ARM11 AHB extensions". It is described
in the 1136 TRM, as Joseph has indicated.
ARM1136 implemented (indeed was the first to implement) the ARM (instruction
set) architecture version 6 (or ARMv6k), but this does not describe the
external bus interfaces.

John

--
John Penton, posting as an individual unless specifically indicated
otherwise.

[Joseph]

Thanks John :-)

[samuel]

Thanks Joseph & John.
I am digging in the 1136 TRM for HBSTRB and HUNALIGN :-)