Z0221500ZCO Zilog, Z0221500ZCO Datasheet - Page 50

• Manufacturer Part Number: Z0221500ZCO
• Description: Z02215 ONE-CHIP MODEM EVAL KIT
• Manufacturer: Zilog

Specifications of Z0221500ZCO

• Main Purpose: Telecom, Modem
• Utilized Ic / Part: Z02215
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Using The AT Command Set
Mnemonic Name
\N
Asynchronous
Terminal Data
Options
Function and Description
This command determines the path of asynchronous format data
through the modem to the terminal. The data path is set at the start
of a telephone line connection. The Communications mode
Options ( &Q ) determine if terminal data is in ASYNCHRONOUS
or SYNCHRONOUS format.
\N0
\N1
PRELIMINARY
This command specifies NORMAL (or buffered) oper-
ation. This mode allows data-rate matching between
the telephone line and terminal, and flow control
between the modem and the terminal. In all data
modes (V.22bis, V.22, Bell 212A, V.23, Bell 202, V.21
and Bell 103), data is buffered through the modem
controller before being modulated to and from the tele-
phone line.
This command specifies DIRECT operation. This
mode does not support data-rate matching, or flow
control between the modem and the terminal. After the
CONNECT message is displayed, the terminal must
adjust its data rate to match the telephone-line rate.
In V.23, V.21, Bell 202 and Bell 103 data modes, data
from the terminal is directly modulated to and from the
telephone line. In V.22bis, V.22 and Bell 212Adata
modes, data from the terminal is converted to
SYNCHRONOUS format using ITU V.14 to adjust for
small (up to 2.5%) timing discrepancies in the data rate
without the use of flow control. This value is the
default value.
Evaluation Board User Manual
Z02215 Single-Chip Modem
UM002304-0802
44