DSP56303 FREESCALE [Freescale Semiconductor, Inc], DSP56303 Datasheet - Page 25

• Manufacturer Part Number: DSP56303
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Signals/Connections
The DSP56303 input and output signals are organized into functional groups, as shown in Table
2-1 and illustrated in Figure 2-1. The DSP56303 operates 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.
Freescale Semiconductor
Power (V
Ground (GND)
Clock
PLL
Address bus
Data bus
Bus control
Interrupt and mode control
HI08
ESSI
SCI
Timer
OnCE/JTAG Port
Notes: 1.
5
2.
3.
4.
5.
CC
)
Port A signals define the external memory interface port, including the external address bus, data bus, and
control signals.
Port B signals are the HI08 port signals multiplexed with the GPIO signals.
Port C and D signals are the two ESSI port signals multiplexed with the GPIO signals.
Port E signals are the SCI port signals multiplexed with the GPIO signals.
The number of Ground signals listed are for the 144-pin TQFP package. For the 196-ball MAP-BGA package,
there are 66 GND connections.
Functional Group
Table 2-1. DSP56303 Functional Signal Groupings
DSP56303 User’s Manual, Rev. 2
Ports C and D
Port A
Port E
Port B2
1
4
3
Number of Signals
18
19
18
24
13
16
12
2
3
5
3
3
6
Table 2-2 on page -3
Table 2-3 on page -3
Table 2-4 on page -4
Table 2-5 on page -5
Table 2-6 on page -5
Table 2-7 on page -6
Table 2-8 on page -6
Table 2-9 on page -8
Table 2-11 on page -10
Table 2-12 on page -13
Table 2-13 on page -15
Table 2-14 on page -17
Table 2-15 on page -17
Table 2-16 on page -18
Description and Page
2
2-1