Z0221500ZCO Zilog, Z0221500ZCO Datasheet - Page 53

• 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
&Q
Communica-
tions Mode
Options
Function and Description
The &Q command selects the terminal communication mode. This
command selects between asynchronous and synchronous
terminal data. SYNCHRONOUS terminal data is transmitted
directly between the terminal and data pump, using the data pump
clock signals.
&Q0
&Q1
&Q2
&Q3
PRELIMINARY
ASYNCHRONOUS mode. This value is the default
value for North America. The \N command controls
asynchronous terminal data options.
SYNCHRONOUS 1 mode. This option hangs up if
DTR goes from ON to OFF for longer than the length
of time specified in
S-register S25 after the CONNECT result code has
been sent to the terminal.
SYNCHRONOUS 2 mode. This option takes the tele-
phone line OFF-HOOK and either answers or dials
when DTR goes from OFF to ON. If S-Register S0 has
been set to answer the telephone line ( S0 is greater
than 0 ) and more ring signals have been received than
specified in S0 (see S-Register S1), then the modem
answers, otherwise the modem dials the stored tele-
phone number (see &Z). The modem hangs up when
DTR goes from ON to OFF for longer than the length
of time specified in S25 .
SYNCHRONOUS 3 mode. This option takes the tele-
phone line OFF-HOOK and handshakes as either an
answerer or an originator when DTR goes from OFF to
ON. If S-Register S0 has been set to answer the tele-
phone line ( S0 is greater than 0 ) and more signals
have been received than the number specified in S0
(see S-Register S1), the modem answers, otherwise,
the modem originates. The modem hangs up when
DTR goes from ON to OFF for longer than the length
of time specified in S25 .
Evaluation Board User Manual
Z02215 Single-Chip Modem
UM002304-0802
47