Datasheet > Z80189

Z80189

更新时间： 2022-12-08 22:56:58

品牌	Logo	应用领域
ZILOG		控制器
页数	文件大小	规格书
107页	557K
描述
GENERAL-PURPOSE EMBEDDED CONTROLLERS

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Z80189 数据手册

Z80189/Z8L189

P R E L I M I N A R Y

Zilog

GENERAL-PURPOSE EMBEDDED CONTROLLERS

PRELIMINARY PRODUCT SPECIFICATION

Z80189/Z8L189

GENERAL-PURPOSE

EMBEDDED CONTROLLERS

FEATURES

Part

Z80189

CPU

S180*

UART

16550

I/O

Speed (MHz)

■ Com Port Decode

Z8L189

S180*

16550

■ PC DMA Mailbox Registers

■ Host I/O Mailbox

■ Fully Static Z180^™MPU Core*

– On-Chip 1 MByte MMU

– Two Enhanced UART Channels (up to 512 Kbps)†

– Two Chain-Linked DMA Channels†

– x 2 Clock Multiplier

■ Programmable Fixed /ROMCS and

/RAMCS Boundaries

– Low-Power Consumption Modes

– Two 16-Bit Timer/Counters

■ 100-Pin QFP and VQFP Packages

■ 3.3 and 5.0-Volt Operating Ranges

■ 0°C to +70°C Temperature Range

– Clocked Serial I/O

– On-Chip Wait State Generator (WSG)

– On-Chip Interrupt Controller

– On-Chip Clock Oscillator/Generator

■ 16550 Compatible MIMIC Interface

– 16 mA MIMIC Output Drive Capability

Notes:

† Enhancements from the Discrete S180 device.

GENERAL DESCRIPTION

The Z80189/Z8L189 are cost-effective modem controllers

that address a new generation of data pumps having the

HDLC formatting feature. Data pumps of these types do

not require an HDLC interface; therefore, the Z80189 does

not need the ESCC^™. The addition of the PC DMA Mailbox

RegistersallowDMAdatatransferbetweenthePCmemory

andthemodemspeaker/microphoneCODEC.TheZ80189

is a smart peripheral controller chip for modem (in particu-

lar V.34 applications), fax, voice messaging, and other

communications applications.

TheintegrationofCOMPortDecodecircuitrytotheZ80189

allows the MIMIC to be selected for a specific COM Port

Address (PC COM Port Address 1-4). COM Port Decode

circuitry is simplified by allowing the user to select the

MIMIC COM Port addresses through software, in addition

to eliminating the need for external circuitry required for

COM Port Decode logic.

The PC DMA and I/O Mailbox Interface can be used to

provide communication paths between the PC Host and

theZ80189. Thesenewcommunicationpathscanbeused

for voice, DTAD, or jumperless COM Port selection.

The Z80189/Z8L189 consists of an enhanced Z8S180

microprocessor, a 16550 MIMIC with increased MIMIC

drivecapability fordirectconnectiontotheIBMPC, XT, AT

bus, and 24 bits of parallel I/O. Current PC modem soft-

ware compatibility can be maintained with the Z80189's

ability to mimic the 16550 UART chip. The Z80180 core is

the intelligent controller between the data pump and

16550 MIMIC interface when used in internal applications.

This intelligent controller performs the data compression

and error correction on outgoing and incoming data.

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

Ground

V_CC

GND

V_DD

V_SS

DS971890301

12 3 4 5 6 7...107

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