
DS97DSP0100
P R E L I M I N A R Y
1
1
P
RELIMINARY
P
RODUCT
S
PECIFICATION
Z89321/371/391
16-B
IT
D
IGITAL
1
S
IGNAL
P
ROCESSORS
FEATURES
I
0
-40
°
C to +70
°
C to +85
°
C Standard Temperature Range
°
C Extended Temperature Range
I
4.5- to 5.5-Volt Operating Range
DSP Core
I
24 MIPS @ 24 MHz Maximum, 16-Bit Fixed Point DSP
I
41.7 ns Minimum Instruction Cycle Time
I
Six-Level Hardware Stack
I
Six Register Address Pointers
I
Optimized Instruction Set (30 Instructions)
On-Board Peripherals
I
Dual 8/16-Bit CODEC Interface Capable of up to
10 Mbps
I
m
(Decompression is Performed in Software)
-Law Compression Option
I
16-Bit I/O Bus (Tri-Stated)
I
Three I/O Address Pins (Latched Outputs)
I
Wait-State Generator
I
Three Vectored Interrupts
I
13-Bit General-Purpose Timer
GENERAL DESCRIPTION
The Z893XX products are high-performance Digital Signal
Processors (DSPs) with a modified Harvard-type architec-
ture featuring separate program and data memory. The de-
sign has been optimized for processing power while mini-
mizing silicon space.
The single-cycle instruction execution and bus structure
promotes efficient algorithm execution, while the six regis-
ter pointers provide circular buffering capabilities and dual
operand fetching.
Three vectored interrupts are complemented by a six-level
stack, and the CODEC interface allows high-speed trans-
fer rates to accommodate digital audio and voice data.
A dedicated Counter/Timer provides the necessary timing
signals for the CODEC interface, and an additional 13-bit
timer is available for general-purpose use.
Device
DSP ROM
(KW)
OTP
(KW)
DSP RAM
Lines
MIPS
(Max)
Z89321
Z89371
Z89391
4
512
512
512
24
16
24
4
64*
Note:
*External
Device
40-Pin
DIP
44-Pin
PLCC
44-Pin
QFP
84-Pin
PLCC
Z89321
Z89371
Z89391
X
X
X
X
X
X
X
Note:
*General-Purpose