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Ground
2.2
Ground
Ground Name
GND
PLL Ground—Ground dedicated for PLL use. The connection should be provided with an extremely
P
low-impedance path to ground. V
as close as possible to the chip package.
GND
PLL Ground 1—Ground dedicated for PLL use. The connection should be provided with an
P1
extremely low-impedance path to ground.
GND
(4)
Quiet Ground—An isolated ground for the internal processing logic. This connection must be tied
Q
externally to all other chip ground connections, except GND
adequate external decoupling capacitors.
GND
Address Bus Ground—An isolated ground for sections of the address bus I/O drivers. This
A (4)
connection must be tied externally to all other chip ground connections, except GND
The user must provide adequate external decoupling capacitors.
GND
(4)
Data Bus Ground—An isolated ground for sections of the data bus I/O drivers. This connection
D
must be tied externally to all other chip ground connections, except GND
must provide adequate external decoupling capacitors.
GND
(2)
Bus Control Ground—An isolated ground for the bus control I/O drivers. This connection must be
C
tied externally to all other chip ground connections, except GND
provide adequate external decoupling capacitors.
GND
Host Ground—An isolated ground for the HI08 I/O drivers. This connection must be tied externally
H
to all other chip ground connections, except GND
external decoupling capacitors.
GND
(2)
ESSI, SCI, and Timer Ground—An isolated ground for the ESSI, SCI, and timer I/O drivers. This
S
connection must be tied externally to all other chip ground connections, except GND
The user must provide adequate external decoupling capacitors.
Note:
These designations are package-dependent. Some packages connect all GND inputs except GND
GND
to each other internally. On those packages, all ground connections except GND
P1
labeled GND. The numbers of connections indicated in this table are minimum values; the total GND
connections are package-dependent.
2-4
Table 2-3. Grounds
Description
should be bypassed to GND
CCP
and GND
P
DSP56303 User's Manual
by a 0.47 F capacitor located
P
and GND
. The user must provide
P
P1
and GND
P
and GND
. The user
P
P1
and GND
. The user must
P
P1
. The user must provide adequate
P1
and GND
P
and GND
P
.
P1
.
P1
and
P
are
P1
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