Z0221500ZCO Zilog, Z0221500ZCO Datasheet - Page 64

• 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
Register Range
S0
S1
S2
S3
S4
0–255
0–255
0–255
0–127
0–127
Default Units
0
0
43
13
10
Table 5. Modem S-Registers
Rings
Rings
ASCII
ASCII
ASCII
PRELIMINARY
Description
Sets number of rings to auto-answer. The
modem automatically answers the telephone
when it rings the number of times specified in S0 .
The value of S-register S0 is 0 , the modem will
not automatically answer the telephone. Any
value from 0 to 255 is valid. The country config-
uration may disable the modem’s ability to detect
a telephone-line RING signal. In this case, the
modem never automatically answers the tele-
phone regardless of the S0 setting. The default
value is 0 (auto-answer disabled).
Returns the number of times the phone rings.
When the modem is in the IDLE state and set to
automatically answer the telephone (S-register S0
greater than 0 ), the modem records the number of
times the phone rings in S-register S1 . The value
of S1 reverts to 0 if no ring occurs for several
seconds. The specific number of seconds is deter-
mined by country configuration.
Sets escape sequence character. S-register S2
contains the value of the escape sequence char-
acter. Setting S2 to a value greater than 127
disables the character escape sequence,
preventing the modem from returning to
COMMAND state from in the ON-LINE state.
The ASCII default value is +.
Sets the end of line character. S-register S3
contains the value of the end of line character.
This character denotes the end of command lines
and result codes.
Sets the linefeed character. S-register S4
contains the value of the character for a line feed.
Evaluation Board User Manual
Z02215 Single-Chip Modem
UM002304-0802
58