Z0220516PSG1961 Zilog, Z0220516PSG1961 Datasheet - Page 17

• Manufacturer Part Number: Z0220516PSG1961
• Description: IC MODEM CTRL 86E34 28-DIP
• Manufacturer: Zilog

Specifications of Z0220516PSG1961

• Data Format: V.22
• Baud Rates: 2.4k
• Interface: Serial
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Through Hole
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ZiLOG
PS001000-MOD0599
Command
M
O
&P
Q
&Q
Sn
?
=x
T
V
Speaker On/Off Options
Return to On-Line
Mode
Pulse Dial Make/Break
Ratios
Result Code Display
Options
Communications Mode
Options
Set the current S-register
to n
Read an S-Register
Write an S-register
Tone dialing
Result Code Format
Function and Description
The country configuration may disable the speaker. If so, this command returns an
ERROR result.
M0
M1
M2
M3
This command returns the modem to the on-line mode. It is frequently used after the
escape character sequence (+++) to resume communication with the remote modem. If
handshaking is started, the modem uses Originate or Answer mode handshaking,
depending upon whether the modem originated or answered the telephone call.
O0
O1
Sets cadence of pulse dial. The country configuration may disable this command,
forcing particular pulse dialing parameters. In this event, the modem returns an ERROR
result if this command is issued.
&P0
&P1
&P2
&P3
This command allows the user to either display result codes or to not display result
codes.
Q0
Q1
The &Q command selects the terminal communication mode.
&Q0
&Q1
This command sets the current S-register to the value n selected by the user. For
example, ATS7 will set the current S-register to S7. Default value is 0. Sn addresses a
particular S-register number so future commands like? and = will read of write the S-
register. Modem reset and the &F command select S0 as the default S-register.
This command displays the value of the last S-register named in the Sn command.
This command writes the value x to the last S-register named in the Sn command. The
range of valid values for x depends upon which S-register is being written. 0 is assumed
if no value is given for x.
Selects the tone method of dialing.
This command changes the result code display format
V0
V1
Table 2. AT Command Set (Continued)
Speaker always off.
Speaker on until carrier detected. This is the default value in North
America.
Speaker always on; stays on after carrier is detected.
Speaker off as digits are dialled, but on during ringback and on until carrier
signal is detected.
Returns the modem to the On-Line state from the Command state during a
telephone line connection. The modem starts handshaking if no telephone
line connection and the modem was off hook.
Returns the modem to the On-Line state and retrain its data pump during a
telephone line connection. The modem starts handshaking if there was no
telephone line connection is detected but the modem was OFF-HOOK.
39%/61% make/break ratio and 10 pulses per second when pulse dialing.
This is the default value.
33%/67% make/break ratio and 10 pulses per second when pulse dialing.
39%/61% make/break ratio and 20 pulses per second when pulse dialing.
33%/67% make/break ratio and 20 pulses per second when pulse dialing.
Result codes are displayed. This is the default value for North America.
Result codes are not displayed.
Asynchronous. The modem handshakes as the originator if S-register S0
is 0, and as the answerer if S0 is 1. This is the default value for North
America.
Synchronous. Hangs up if DTR goes from on to off after the time in S-
register S25 after the CONNECT result code has been sent to the terminal.
All result codes are displayed as numbers.
All result codes are displayed as words (verbose form). This is the default
value for North America.
Modem Controller
Z02205
15