P
RODUCT
S
PECIFICATION
Z02205
M
ODEM
C
ONTROLLER
I
DEAL FOR
L
OW
P
OWER
C
ONSUMPTION
, S
MALL
S
IZE
R
EQUIREMENTS
FEATURES
Device
Z02205
ROM
(KB)
16
RAM*
(Bytes)
237
Speed
(MHz)
16
1
Includes
AT
command set interpreter in on-chip ROM—
no external memory required
Supports Tone dial or Pulse dial
Call progress monitoring controls
Handshake controls
Guard Tone controls
Line quality monitoring and Auto-Retrain
Auto-Dial and Auto-Answer
Glueless interface to Z02201 modem data pump
Watch-Dog Timer (WDT)/Power-On Reset (POR)
Type-I Caller ID
Dynamic power management
CMOS design for low power consumption
0
°
C to +70
°
C commercial temperature range
28-pin DIP, SOIC package
4.5V to 5.5V operating range
GENERAL DESCRIPTION
The Z02205 V.22bis Modem Controller serves as the mo-
dem controller in embedded V.22bis modem applications.
A complete modem can be made by adding ZiLOG data
pump (Z02201), phone line interface, and the required DTE
interface. The Z02205 has been designed for low-cost use
and includes a glueless interface to the ZiLOG data pumps.
The Z02205 is ideal for applications where small size and
low power consumption are requirements.
The Z02205 operates over dial-up telephone connections,
provides auto-dial and ring detect, and operates in either
SYNC
or
ASYNC
modes.
The Z02205 includes
AT
command and modem control
firmware in on-chip ROM. It also includes enhanced wake-
up circuitry, programmable Watch-Dog Timers (
WDT
), and
low-noise/EMI options.
AT commands stored on-chip in ROM provide control over
the following modem controller functions:
PS001000-MOD0599
Call progress monitoring
Handshake negotiation
Dial controls—pulse or tone
S-registers
Auto-answer and auto-dial
Guard tones
On-hook and off-hook
Auto-retrain
Standard Z02205 sample devices and demonstration boards
contain controller code tailored for operation on the North
American phone network. For production usage, customers
must modify the controller code to meet the requirements
of their particular country and application.
1
ZILOG [ ZILOG, INC. ]
