DSP56307UM 데이터 시트보기 (PDF) - Motorola => Freescale

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DSP56307UM

24-BIT DIGITAL SIGNAL PROCESSOR

Motorola => Freescale 

Signals/Connections

Ground

GROUND

Table 1-3 Grounds

Ground

Name

Description

GNDP

PLL GroundÑGNDP is ground-dedicated for PLL use. The connection should be

provided with an extremely low-impedance path to ground. VCCP should be

bypassed to GNDP by a 0.47 µF capacitor located as close as possible to the chip

package.

GNDP1

GNDQ

GND A

GNDD

PLL Ground 1ÑGNDP1 is ground-dedicated for PLL use. The connection should be

provided with an extremely low-impedance path to ground.

Quiet GroundÑGNDQ is an isolated ground for the internal processing logic. This

connection must be tied externally to all other chip ground connections. The user

must provide adequate external decoupling capacitors.

Address Bus GroundÑGNDA is an isolated ground for sections of the address bus

I/O drivers. This connection must be tied externally to all other chip ground

connections. The user must provide adequate external decoupling capacitors. There

are four GNDA connections.

Data Bus GroundÑGNDD is an isolated ground for sections of the data bus I/O

drivers. This connection must be tied externally to all other chip ground

connections. The user must provide adequate external decoupling capacitors.

GNDC

GNDH

GNDS

Bus Control GroundÑGNDC is an isolated ground for the bus control I/O drivers.

This connection must be tied externally to all other chip ground connections. The

user must provide adequate external decoupling capacitors.

Host GroundÑGNDH is an isolated ground for the HI08 I/O drivers. This

connection must be tied externally to all other chip ground connections. The user

must provide adequate external decoupling capacitors.

ESSI, SCI, and Timer GroundÑGNDS is an isolated ground for the ESSI, SCI, and

timer I/O drivers. This connection must be tied externally to all other chip ground

connections. The user must provide adequate external decoupling capacitors.

Not Recommended for New Design

1-4

DSP56307 Technical Data

MOTOROLA

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