Motorola DSP56309 User Manual page 132

¥ Data word: 8-bit
¥ Transfer modes:
Ð Mixed 8-bit, 16-bit, and 24-bit data transfers
¥ DSP-to-host
¥ Host-to-DSP
Ð Host command
¥ Handshaking protocols:
Ð Software polled
Ð Interrupt-driven (Interrupts are compatible with most processors, including
the MC68000, 8051, HC11, and Hitachi H8.)
¥ Dedicated interrupts:
Ð Separate interrupt lines for each interrupt source
Ð Special host commands force DSP core interrupts under host processor
control. These commands are useful for these purposes:
¥ Real-time production diagnostics
¥ Creating a debugging window for program development
¥ Host control protocols
¥ Interface capabilities:
Ð Glueless interface (no external logic required) to these devices:
¥ Motorola HC11
¥ Hitachi H8
¥ 8051 family
¥ Thomson P6 family
Ð Minimal glue-logic (pullups, pulldowns) required to interface these devices:
¥ ISA bus
¥ Motorola 68K family
Ò
¥ Intel
MOTOROLA
X86 family
DSP56309UM/D
Host Interface (HI08)
HI08 Features
6-5