z02201 ZiLOG Semiconductor, z02201 Datasheet - Page 6

• Manufacturer Part Number: z02201
• Description: Z02201 V.22bis Data Pump With Integrated Afe
• Manufacturer: ZiLOG Semiconductor

General Description
PS000904-0107
The Z02201 is a synchronous single-chip modem solution that provides a means
to construct a V.22bis modem capable of 2400 bps full duplex over dial-up lines.
The Z02201 is specifically designed for use in embedded modem applications
where space, performance, and low power consumption are key requirements.
Operating over the Public Switched Telephone Network (PSTN), the Z02201
meets the modem standards for V.22bis, V.22, V.23, V.21, Bell 212A, and Bell 103.
A typical modem application can be made by simply adding a control
microprocessor (host), phone-line interface, and DTE interface.
The Z02201 performs HDLC framing at all speeds. This capability eliminates the
requirement for an external Serial Input/Output (SIO) device for Data Terminal
Equipment (DTE) in products incorporating error control.
All modulation, demodulation, filtering, A/D and D/A conversion functions for
transmit and receive are provided on-chip. Automatic and selectable compromise
equalizers are included to optimize performance over a wide range of line types.
The Z02201 device compensates for a wide variety of adverse line conditions by
using a combination of fixed link, fixed cable, and adaptive equalizers.
The Z02201 provides comprehensive selectable and programmable tone genera-
tion and detection.
All digital I/O signals are TTL compatible. The parallel interface is compatible with
standard 8-bit microprocessors, allowing direct access to eight I/O registers and
indirect access to the modem RAM.
The RAM access capability allows the host to retrieve diagnostic data, modem/
line status and control data, and set programmable coefficients. The serial
interface is used for data transfers. All control and status information is transferred
by means of the parallel interface.
The Z02201 transmit drivers and receive amplifiers can be connected directly to a
Data Access Arrangement (DAA) by means of a transformer. Completing this
connection reduces the external circuits to a minimum.
In addition, the Z02201 offers further system level savings by providing built-in
filters for both the Transmitter Analog Output and the Receiver Analog Input, thus
eliminating the need for external filtering components.
The Z02201 device operates on a single +5 VDC power supply. During periods of
no traffic, the host can place the modem into SLEEP mode, reducing power
consumption to less than 1 percent of full load power.
V.22BIS Data Pump with Integrated AFE
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