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)
24
-
(Bytes)
®
RAM*
256
256
with 24 KB of program memory,
Lines
I/O
47
31
4.5V to 5.5V
4.5V to 5.5V
Voltage
Range
P R E L I M I N A R Y
Z89175
Z89176 (R
V
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
P
Ground
Power
RELIMINARY
®
P
PC-Based Development Tools
ROCESSING
P
OMLESS
Circuit
RODUCT
GND
V
CC
C
ONTROLLERS
S
PECIFICATION
)
Device
V
V
DD
SS
1
1
2
1
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