Table 2-1 Dsp56305 Functional Signal Groupings - Motorola DSP56305 User Manual

2.1 SIGNAL GROUPINGS
The input and output signals of the DSP56305 are organized into functional groups, as
shown in Table 2-1 and as illustrated in Figure 2-1.
The DSP56305 is operated from a 3 V supply; however, some of the inputs can tolerate
5 V. A special notice for this feature is added to the signal descriptions of those inputs.

Table 2-1 DSP56305 Functional Signal Groupings

Power (V )
CC
Ground (GND)
Clock
PLL
Address Bus
Data Bus
Bus Control
Interrupt and Mode Control
Host Interface (HI32)
Extended Synchronous Serial Interface
(ESSI)
Serial Communication Interface (SCI)
Timer
JTAG/OnCE Port
Note: 1. Port A signals define the external memory interface port, including the external address
bus, data bus, and control signals.
2. Port B signals are the HI32 port signals multiplexed with the GPIO signals.
3. Port C and D signals are the two ESSI port signals multiplexed with the GPIO signals.
4. Port E signals are the SCI port signals multiplexed with the GPIO signals.
Figure 2-1 is a diagram of DSP56305 signals by functional group.
MOTOROLA
Functional Group
DSP56305 User's Manual
Signal/Connection Descriptions
Number of
Signals
25
26
24
1
Port A
24
15
52
2
Port B
Ports C and 12
3
D
4
Port E
Signal Groupings
Detailed
Description
Table 2-2
Table 2-3
2
Table 2-4
3 Table 2-5
Table 2-6
Table 2-7
Table 2-8
5 Table 2-9
Table 2-10
Table 2-11 and
Table 2-12
3 Table 2-13
3
Table 2-14
6 Table 2-15
2-3