DSP56600FMSLASHAD datasheet(18/76 Pages) NXP

18 / 76 page

Preliminary

1-12

DSP56652 Technical Data Sheet

MOTOROLA

Pin and Signal Descriptions

DSP56652 Signal Description

Power

Table 1-4

Power

Power Names

Description

VCCA

Address bus power

ÑThese lines supply power to the address bus.

VCCB

Smart Card interface power

ÑThis line supplies isolated power for Smart Card

interface I/O drivers.

VCCC

Bus control power

ÑThis line supplies power to the bus control logic.

VCCD

Data bus power

ÑThese lines supply power to the data bus.

VCCE

Audio codec port power

ÑThis line supplies power to audio codec I/O drivers.

VCCF

Clock output power

ÑThis line supplies a quiet power source for the CKOUT

output. Ensure that the input voltage to this line is well-regulated and uses an

extremely low impedance path to tie to the VCC power rail. Use a 0.1 mF bypass

capacitor located as close as possible to the chip package to connect between the

VCCF line and the GNDF line.

VCCG

GPIO power

ÑThis line supplies power to the GPIO, keypad, data port, interrupts,

STO, and JTAG I/O drivers.

VCCH

Baseband codec and timer power

ÑThis line supplies power to the baseband codec,

timer and QSPI I/O drivers.

VCCHQ

Quiet power high

ÑThese lines supply a quiet power source to the pre-driver

voltage converters. This value should be greater than or equal to the maximum

value of the power supplies of the chip I/O drivers (i.e., the maximum of VCCA,

VCCB, VCCC, VCCD, VCCE, VCCF, VCCG, VCCH, and VCCK).

VCCK

Emulation port power

ÑThis line supplies power to the emulation port I/O drivers.

VCCP

Analog PLL circuit power

ÑThis line is dedicated to the analog PLL circuits and

must remain noise-free to ensure stable PLL frequency and performance. Ensure

that the input voltage to this line is well-regulated and uses an extremely low

impedance path to tie to the VCC power rail. Use a 0.1 mF capacitor and a 0.01 mF

capacitor located as close as possible to the chip package to connect between the

VCCP line and the GNDP and GND P1 lines.

VCCQ

Quiet power

ÑThese lines supply a quiet power source to the internal logic circuits.

Ensure that the input voltage to this line is well-regulated and uses an extremely low

impedance path to tie to the VCC power rail. Use a 0.1 mF bypass capacitor located as

close as possible to the chip package to connect between the VCCQ lines and the

GNDQ lines.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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