Host Port Signals; Hi08 Signal Definitions For Operational Modes - Motorola DSP56303 User Manual

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Dedicated interrupts:
– Separate request lines for each interrupt source
– Special host commands force DSP core interrupts under host processor control.
These commands are useful for
— Real-time production diagnostics
— Creation of a debugging window for program development
— Host control protocols
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Interface capabilities:
– Glueless interface (no external logic required) to
— Motorola HC11
— Hitachi H8
— 8051 family
— Thomson P6 family
– Minimal glue logic (pull-ups, pull-downs) required to interface to
— ISA bus
— Motorola 68K family
— Intel X86 family
6.2

Host Port Signals

The host port signals are discussed in Chapter 2, Signals/Connections. Each host port signal
can be programmed as a host port signal or as a GPIO signal, PB[0–15]. See Table 6-1
through Table 6-3.
Table 6-1. HI08 Signal Definitions for Operational Modes
HI08 Port Signal Multiplexed Address/Data Bus Mode
HAD[0–7]
HAS/HA0
HA8/HA1
HA9/HA2
HCS/HA10
HAD[0–7]
HAS/HAS
HA8
HA9
HA10
Host Interface (HI08)
Non-multiplexed Bus Mode
H[0–7]
HA0
HA1
HA2
HCS/HCS
Host Port Signals
GPIO Mode
PB[0–7]
PB8
PB9
PB10
PB13
6-3