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2 power, Table22 power inputs, Power -5 – Motorola DSP56012 User Manual

Page 45: Table 2-2, Power inputs -5

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Signal Descriptions

Power

MOTOROLA

DSP56012 User’s Manual

2-5

2.2

POWER

Table 2-2

Power Inputs

Power Name

Description

V

CCP

PLL Power

—V

CCP

is V

CC

dedicated for Phase Lock Loop (PLL) use. The voltage

should be well-regulated and the input should be provided with an extremely
low impedance path to the V

CC

power rail. V

CCP

should be bypassed to GND

P

by a 0.1

µ

F capacitor located as close as possible to the chip package.

V

CCQ

Quiet Power—

V

CCQ

is an isolated power for the internal processing logic. This

input must be tied externally to all other chip power inputs. The user must
provide adequate external decoupling capacitors.

V

CCA

A Power

—V

CCA

is an isolated power for sections of the internal chip logic. This

input must be tied externally to all other chip power inputs. The user must
provide adequate external decoupling capacitors.

V

CCD

D Power

—V

CCD

is an isolated power for sections of the internal chip logic. This

input must be tied externally to all other chip power inputs. The user must
provide adequate external decoupling capacitors.

V

CCH

Host Power

—V

CCH

is an isolated power for the HI I/O drivers. This input must

be tied externally to all other chip power inputs. The user must provide adequate
external decoupling capacitors.

V

CCS

Serial Host Power

—V

CCS

is an isolated power for the SHI I/O drivers. This

input must be tied externally to all other chip power inputs. The user must
provide adequate external decoupling capacitors.