Z0221500ZCO Zilog, Z0221500ZCO Datasheet - Page 66

• 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
S7
S8
S9
1–255
0–255
1–255
Default Units
30
2
6
Table 5. Modem S-Registers (Continued)
Seconds
Seconds
1/10th
sec
PRELIMINARY
Description
Delays to wait for Carrier after dialing. S-
register S7 specifies the maximum time the
modem waits for a DIAL tone ( W dial modifier),
waiting for silence ( @ dial modifier), dialing, or
handshaking. When answering, the modem may
handshake (take the telephone line OFF-HOOK
until it enters data mode) for a length of time up to
the value specified in S7 .
When calling, the modem may dial (take the tele-
phone line OFF-HOOK until it begins hand-
shaking) for the length of time up to the value
specified in S7 . Then, the modem may handshake
with the other modem before entering data mode
for a length of time up to the value specified in
S7 .
The modem hangs up and returns the NO DIAL-
TONE, NO ANSWER, or NO CARRIER result
codes if more time than the value specified in S7
is required for these operations.
Delays to wait when a comma dial modifier is
processed.
S-register S8 specifies the duration of the delay
when the comma ( , ) command or dial modifier is
processed.
Time carrier must be present before being
recognized.
S-register S9 specifies the number of tenths of a
second a CARRIER signal must be present before
the modem
recognizes it.
Evaluation Board User Manual
Z02215 Single-Chip Modem
UM002304-0802
60