Z0221500ZCO Zilog, Z0221500ZCO Datasheet - Page 26

• 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

Setup and Installation
DTMF Transmit Levels
The parameter DTMFLOLEV_dBm contains the low-band transmit level
in dBm and can be fractional. Adjust this value for loss or gain in the
During a Connection
The LINE_SENSE_ONLINE parameter determines if the modem
checks that another telephone takes the telephone line OFF-HOOK
while the modem has a connection and is transferring data.
The DAA provides a Line-In-Use circuit for the modem connected to
the combined Ring-Detection and Line-In-Use input signal (RDET/
LCS). During a connection, the modem examines the Line-In-Use
input. If it is Inactive for the amount of time specified in
Z02215_PARPHONE_DETECT (Bits 0..6) another telephone is
deemed to have picked up the telephone line, causing the modem to
abort the connection and hang up the telephone line so it may be used
by the other telephone.
Line_in_Use Parameters
The parameter Z02212_LIU_ACTIVETIME contains the length of
time (Y) in 40 υ s units that the Line-In-Use input must be Active
before dialing. This parameter is only used if the
LINE_SENSE_ENABLE parameter is
The parameter Z02215_CHK_LIU_TIME contains the length of time
(X) in 40 υ s units the Line-In-Use input signal is monitored before
dialing. The LCS_CHK output signal is held Active during the entire
period (X). For successful operation, period (X) must be greater than
period (Y). This parameter is only used if the
LINE_SENSE_ENABLE parameter is
The parameter Z02215_LIU_HANGUPTIME_MS contains the Line-
In-Use debounce value during a Connection. The length of time in 1
ms units that Line-In-Use must be Inactive before a connection is
aborted.
PRELIMINARY
Evaluation Board User Manual
Z02215 Single-Chip Modem
1
1
.
.
UM002304-0802
20