Mode C: Bootstrap Through Hi32 In Pci Mode - Motorola DSP56305 User Manual

4.3.7 Mode B: Bootstrap Through HI32 in 24-Bit-Wide UB Mode
(From 563xx Port A)
Mode MODD
B 1
The program stored at the hardware reset vector, after testing MODA, MODB, MODC,
and MODD, bootstraps through HI32 in 24-bit wide UB slave mode, in a configuration
that allows glueless connection to Port A of a DSP563xx device. The DSP56305 is written
with 24-bit wide words reflecting the 24-bit wide host bus transfers. This mode may be
used for booting a slave DSP56305 from Port A of a master DSP563xx device with
glueless connection.
4.3.8

Mode C: Bootstrap through HI32 in PCI mode

Mode MODD
A 1
The program stored at the hardware reset vector, after testing MODA, MODB, MODC,
and MODD, bootstraps through HI32 in standard PCI slave configuration. The
DSP56305 is written with 24-bit wide words encapsulated in 32-bit wide PCI transfers.
MOTOROLA
MODC MODB MODA
0 1
MODC MODB MODA
0 1
DSP56305 User's Manual
Reset
Vector
1 $FF0000 Bootstrap through HI32 in
24-bit-wide UB mode (from
563xx Port A)
Reset
Vector
0 $FF0000 Bootstrap through HI32 in
PCI mode
Core Configuration
Bootstrap Program
Description
Description
4-9