Z0221524ASGR4508 Zilog, Z0221524ASGR4508 Datasheet - Page 2

• Manufacturer Part Number: Z0221524ASGR4508
• Description: IC 2400BPS MODEM CTRL 44-VQFP
• Manufacturer: Zilog

Specifications of Z0221524ASGR4508

• 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

The Z02215 is a synchronous single-chip V.22bis
modem capable of 2400 bps full-duplex over dial-
up lines. The Z02215 is a full-featured, self-con-
trolled modem that includes a modem controller,
digital signal processing (DSP), and Analog Front
End (AFE) functions. A software-selectable active
hybrid is available on-chip to minimize the exter-
nal logic. This device is specifically designed for
use in embedded modem applications where space,
performance, and low-power consumption are key
requirements. A typical modem can be created by
simply adding a phone-line interface (DAA), and
Data Terminal Equipment (DTE) interface.
The Z02215 can be programmed with country
parameters using AT commands or the EEPROM
interface. AT commands can be used to load the
country parameters from host controller onto the
Z02215. Configuration of the controller code using
AT commands or the EEPROM interface simplifies
country qualifications.
Operating over the Public Switched Telephone
Network (PSTN), the Z02215 meets the modem
standards for V.22bis, V.22, V.23 (Minitel), V.21,
Bell 212A, Bell 202, Bell 202T, and Bell 103.
All modulation, demodulation, filtering, Analog to
Digital (A/D), and Digital to Analog (D/A) conver-
sion functions for transmission and reception are
provided on-chip. Automatic compromise equaliz-
ers are included to optimize performance over a
wide range of line types.
Transmit drivers and receive amplifiers can be con-
nected directly to a Data Access Arrangement
(DAA) by adding a transformer, or a silicon DAA,
reducing the external circuits to a minimum.
In addition, the Z02215 provides further system-
level savings by providing built-in filters for both
the transmitter analog output and the receiver ana-
log input. This configuration eliminates the need
for external filtering components.
The Analog Front End of the Z02215 includes an
active hybrid circuit that improves modem perfor-
mance and reduces system-level costs by reducing
the requirement for external components.
The Z02215 device operates on a single +5 VDC
power supply. During periods of no traffic, the
modem can be placed into SLEEP mode, reducing
power consumption through Dynamic Power Man-
agement.