Z0221524ASGR50A5 Zilog, Z0221524ASGR50A5 Datasheet

Z0221524ASGR50A5

Manufacturer Part Number

Z0221524ASGR50A5

Description

IC MODEM CONTROLLER 44-LQFP

Manufacturer

Zilog

Datasheets

1.Z0221524VSCR4508.pdf (74 pages)

2.Z0221524VSGR4508.pdf (4 pages)

3.Z0221524VSGR4508.pdf (2 pages)

Specifications of Z0221524ASGR50A5

Data Format

V.21, V.22, V.23, Bell 103, Bell 212A

Baud Rates

2.4k

Interface

Serial

Voltage - Supply

4.5 V ~ 5.5 V

Mounting Type

Surface Mount

Package / Case

44-LQFP

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

BOSTOCK HK LIMITED

Part Number:

Z0221524ASGR50A5

Manufacturer:

Zilog

Quantity:

10 000

Current page: 1 of 2
Download datasheet (47Kb)

INTRODUCTION

This Product Update provides errata information for

the Z02215 Single-Chip Modem.

•

The following table lists the firmware versions iden-

tified in this errata.

Problem #1 - Autobaud Detection

Versions: Z02215 ROM Code 4508

Updated: July 17, 2000

Problem: Some character sequences other than AT

can cause the automatic detection of speed and parity

of characters from the terminal to fail, preventing

modem command input from the terminal. This is

expected to be a very rare occurrence in embedded

environments where the communication between the

Z02215 and its host processor are carefully con-

trolled.

Solution: If the Z02215 fails to respond to a modem

AT command, reset the Z02215.

UP002402-1001

Problem #1 - Autobaud Detection

Problem #2 - Parallel Phone Off-Hook and Paral-

lel Phone Pick-Up Detection

Problem #3 - Ring Indicator (RI)

Problem #4 - Parallel Phone Pick-Up Detection

Note: Initial test vector coverage did not include

UART testing. The testing has been fixed and die

after date code 0136 SL UART has been fully tested.

#Â@

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ZiLOG Worldwide Headquarters • 910 E. Hamilton Avenue • Campbell, CA 95008

Telephone: 408.558.8500 • Fax: 408.558.8300 • Internet:

#ÂP

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50A5

4508

Z02215

Problem #2 - Parallel Phone Off-Hook

and Parallel Phone Pick-Up Detection

Versions: Z02215 ROM Code 4508

Updated: July 17, 2000

Problem: Off-hook and Pick-up detection do not

work properly.

Solution: None

Problem #3 - Ring Indicator (RI)

Versions: Z02215 ROM Code 50A5

Updated: July 17, 2000

Problem: After reset, the Z02215 RI is set to 0V

(active). This is incorrect. This may cause a host pro-

cessor monitoring the RI to not detect the first RING

signal.

Solution: The state of the RI signal is corrected by

the Z02215 when the telephone is placed on-hook

after a data connection, or after the first RING is

received from the telephone line. To detect a RING

using the RI signal, detect the rising edge (that is,

detect the end of the RING when RI switches from

active to inactive).

Problem #4 - Parallel Phone Pick-Up

Detection

Versions: Z02215 ROM Code 50A5

Updated: July 17, 2000

Problem: When pick-up detection is enabled, the

Z02215 will detect itself taking the telephone off-

hook to dial or answer a call as a parallel extension

being taken off-hook. This results in the Z02215

immediately placing the telephone line back on-

hook.

Solution: A software solution for outgoing calls is to

dial:

INGLE

-C

HIP

www.zilog.com

ODEM

RRATA

Related parts for Z0221524ASGR50A5

Z0221524ASGR50A5 Summary of contents

Page 1

... Z02215 and its host processor are carefully con- trolled. Solution: If the Z02215 fails to respond to a modem AT command, reset the Z02215. ZiLOG Worldwide Headquarters • 910 E. Hamilton Avenue • Campbell, CA 95008 Telephone: 408.558.8500 • Fax: 408.558.8300 • Internet: Z02215 S -C ...

Page 2

... INTELLECTUAL PROPERTY INFRINGEMENT RELATED IN ANY MANNER TO USE OF INFORMATION, DEVICES, OR TECHNOLOGY DESCRIBED HEREIN OR OTHERWISE. Devices sold by ZiLOG, Inc. are covered by warranty and limitation of liability provisions appearing in the ZiLOG, Inc. Terms and Conditions of Sale. ZiLOG, Inc. makes no warranty of merchantability or fitness for any purpose Except with the express written approval of ZiLOG, use of information, devices, or technology as critical components of life support systems is not authorized ...

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