Double-Strobe Pin Configuration - Motorola DSP56305 User Manual

Core Configuration
Bootstrap Program
4.3.9 Mode D: Bootstrap Through HI32 in 16-Bit-Wide UB Mode
(ISA)
Mode MODD
D 1
The program stored at the hardware reset vector, after testing MODA, MODB, MODC,
and MODD, bootstraps through HI32 in ISA slave configuration. The DSP56305 is
written with 24-bit wide words broken into 16-bit wide ISA transfers.
4.3.10 Mode E: Bootstrap Through HI32 in 8-Bit-Wide UB Mode in

Double-Strobe Pin Configuration

Mode MODD
E 1
The program stored at the hardware reset vector, after testing MODA, MODB, MODC,
and MODD, bootstraps through HI32 in UB slave double-strobe (HWR, HRD)
configuration. The DSP56305 is written with 24-bit wide words broken into 8-bit wide
host bus transfers. This mode may be used for booting from various microprocessors or
microcontrollers, as for booting a slave DSP56305 from Port A of a master DSP563xx
device.
4-10
MODC MODB MODA
1 0
MODC MODB MODA
1 1
DSP56305 User's Manual
Reset
Vector
1 $FF0000 Bootstrap through HI32 in
16-bit-wide UB mode (ISA)
Reset
Vector
0 $FF0000 Bootstrap through HI32 in
8-bit-wide UB mode in
double-strobe pin
configuration
Description
Description
MOTOROLA