Z89175 Zilog., Z89175 Datasheet

Z89175

Manufacturer Part Number

Z89175

Description

Voice Processing Controllers

Manufacturer

Zilog.

Datasheet

1.Z89175.pdf (68 pages)

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FEATURES

Note: *General-Purpose

GENERAL DESCRIPTION

The Z89175/176 is a fully integrated, dual processor con-

troller designed for voice processing applications. The I/O

control processor is a Z8

two 8-bit counter/timers, and up to 47 I/O pins. The DSP is

a 16-bit processor with a 24-bit ALU and accumulator,

512x16 bits of RAM, single cycle instructions, and 8K

words of program ROM. The chip also contains a half-flash

8-bit A/D converter with up to a 16 kHz sample rate and a

10-bit PWM D/A converter. The sampling rates for the con-

verters are programmable. The precision of the 8-bit A/D

can be extended by resampling the data at a lower rate in

software. The Z8 and DSP processors are coupled by

mailbox registers and an interrupt system. DSP or Z8 pro-

grams can be directed by events in each other’s domain.

DS97TAD0100

Z89175

Z89176

Device

Watch-Dog Timer and Power-On Reset

Improved Low Power Stop Mode

On-Chip Oscillator which Accepts a Crystal

or External Clock Drive

Improved Global Power-Down Mode

Low Power Consumption - 200 mW (typical)

Two Comparators

RAM and ROM Protect

On-Board Oscillator for 32.768 kHz Real-Time Clock

ROM

(KB)

(Bytes)

RAM*

256

with 24 KB of program memory,

Lines

I/O

4.5V to 5.5V

Voltage

Range

P R E L I M I N A R Y

Z89175

Z89176 (R

The Z89176 is the ROMless version of the Z89175. How-

ever, the on-chip DSP is not ROMless.

Notes: All Signals with a preceding front slash, "/", are ac-

tive Low, e.g., B//W (WORD is active Low); /B/W (BYTE is

active Low, only).

Power connections follow conventional descriptions be-

low:

OICE

Connection

Clock Speeds of 20.48 or 29.49 MHz

16-Bit Digital Signal Processor (DSP)

8K Word DSP Program ROM

512 Words On-Chip DSP RAM

8-Bit A/D Converter with up to 16 kHz Sample Rate

10-Bit PWM D/A Converter

Six Vectored, Prioritized Z8 Interrupts

Three Vectored, Prioritized DSP Interrupts

Two DSP Timers to Support Different A/D and D/A

Sampling Rates

IBM

Developer’s Toolbox for T.A.M. Applications

Ground

Power

RELIMINARY

PC-Based Development Tools

ROCESSING

OMLESS

Circuit

RODUCT

GND

ONTROLLERS

PECIFICATION

)

Device

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