NG,
>
> What is this? I looked at the front of the UM and it is not
> defined. It is part of the address, but I'm not sure of the
> full concept.
>
> Also, is there any good books on the 5282? I looked at Amazon
> for the one suggested in the UN, but it is $130 and older than
> the processor! The rest of the books wene not clear on how far
> they go into the 5282.
>
> Regards,
> Jeff Simons
IPSBAR is the Internal Peripheral System Base Address Register.
Specifically, it lets you specify the address range that the on-chip peripherals will respond to. For example, the I2C controller is located beginning at IPSBAR + 0x300. If you set IPSBAR to 0x40000000, then the I2C controller register will respond to memory reads and writes to
0x400003xx.
--Gene