ZILOG Z89169, Z89165, Z89166, Z89167, Z89168 Datasheet
FEATURES
Z89165/166/167/168/169
Z89165/167/169 AND
Z89166/168 (ROMLESS)
ENHANCED DUAL-PROCESSOR
DTAD CONTROLLERS
■ Part Z8 ROM Z8 RAM* Speed
Number (KBytes) (KBytes) (MHz)
Z89165 24 236 20
Z89166 ROMless 236 20
Z89167 24 236 24
Z89168 ROMless 236 24
Z89169 32 236 24
*General-Purpose
■ Part DSP ROM DSP RAM Speed
Number (Words) (Words) (MHz)
Z89165 6K 512 20
Z89166 6K 512 20
Z89167 8K 512 24
Z89168 8K 512 24
Z89169 8K 512 24
■ 68- and 84-Pin PLCC Packages
■ 4.5- to 5.5-Volt Operating Range
■ Low-Power Consumption (200 mW Typical)
■ 0°C to +70°C Temperature Range
■ 25 Expanded Register Files
■ 47 Input/Output Lines (Z89165)
31 Input/Output Lines (Z89166)
43 Input/Output Lines (Core Processor)
■ Six Vectored, Prioritized Z8 Interrupts with
Programmable Polarity
■ Three Vectored, Prioritized DSP Interrupts with
Programmable Polarity
■ Two Analog Comparators
■ Two Programmable Z8 8-Bit Counter/Timers,
Each with Two 6-Bit Programmable Prescaler
■ Watch-Dog Timer /Power-On Reset
■ On-Chip Oscillator that Accepts a Crystal,
Ceramic Resonator, LC, RC, or External Clock Drive
■ RAM and ROM Protect, Low-EMI Option
GENERAL DESCRIPTION
Zilog's Digital Voice Processor Controller family
combines a Z8® microcontroller and a DSP processor
on-chip for a cost-effective turnkey system in digital
telephone answering devices and other voice processing
applications.
The dual-processor architecture is loosely coupled by
mailbox registers and an interrupt system, enabling DSP or
Z8 programs to be directed by events in each other's
domain.
The Z8 microcontroller uses an expanded register file to
allow access to register-mapped peripheral and I/O
circuits for programming versatility.
The 16-bit DSP processor features a 24-bit ALU and
accumulator with single-cycle instructions, providing the
algorithm processing power necessary for telephone voice
quality.
The Z89165/166 devices offer a half-flash 8-bit A/D
converter with up to 128 kHz sample rate and a 10-bit
Pulse-Width modulator (PWM) D/A converter, eliminating
the need for an external CODEC.
The Z89167/168/169 devices feature a hardware ARAM
interface, as well as a dual-CODEC interface. A 10-bit
PWM D/A converter is also on-chip.
Notes:
All Signals with a preceding front slash, "/", are active Low, e.g.:
B//W (WORD is active Low); /B/W (BYTE is active Low, only).
Power connections follow conventional descriptions below:
Connection Circuit Device
Power V
Ground GND V
CC
V
DD
SS
283
GENERAL DESCRIPTION (Continued)
Z89165/166/167/168/169
Address
or I/O
(Nibble
Programmable)
Address/Data
or I/O
(Byte
Programmable)
I/O
(Bit
Programmable)
P00
P01
P02
P03
P04
P05
P06
P07
P10
P11
P12
P13
P14
P15
P16
P17
P20
P21
P22
P23
P24
P25
P26
P27
RMLS
/AS
/DS
R/W
XTAL1
XTAL2
VDD
GND
/RESET
Timer 0
Capture Reg.
Port 0
Port 1 Port 4
Register Bus
24 Kbytes
Program
ROM
(Z89165)
Expanded Register
Timer 1
Internal Address Bus
Internal Data Bus
File
(Z8)
Peripheral
Register
(DSP)
mailbox
Port 2 Port 5
6K Words
Program
ROM
Ext.
Memory
Control
OSC
Power
Timer 2 Timer 3
Internal Address Bus
Internal Data Bus
INT 1
INT 2
Register File
256 x 8 Bit
Z8 Core
Expanded
Register Bus
Extended Bus of the DSP
256 Word
RAM 0
Extended Bus of the DSP
256 Word
RAM 1
DSP Core
Port 3
DSP Port
PWM
(10-Bit)
(8-Bit)
ADC
P31
P32
Input
P33
P34
Output
P35
P36
P37
P40
P41
P42
P43
P44
Programmable)
P45
P46
P47
P50
P51
P52
P53
P54
P55
P56
P57
DSP0
DSP1
PWM
AN IN
AN VDD
AN GND
VREF+
VREF-
I/O
(Bit
I/O
(Bit
Programmable)
Z89165/166 Functional Block Diagram
284
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