Z02215 datasheet(49/74 Pages) ZILOG

49 / 74 page

Z02215

Single Chip Modem with Integrated Controller, Data Pump, and AFE

PS001907-0904

Modem S-Registers

S92

0–255

0x80

PttBitmap (12)

Bit 0: Z02215_GPOB0, general purpose parallel output pin.

This bit allows for automatic selection of country specific

circuits in a general purpose DAA design. Set this bit to 1 to

set the PB2 signal to +5 V. Set it to 0 to set PB2 to 0V.

Bit 1: Z 02215_GPOB0, general purpose parallel output pin.

This allows for automatic selection of country specific circuits

in a general purpose DAA design. Set this to 1 to set the PB3

signal to +5 V. Set to 0 to set PB3 to 0V.

Bit 2: Z02215_USE_ACTIVEHYBRID, set this bit enables the

DSP's on chip active hybrid in all non-4 wire connections.

Bit 3: LINE_SENSE_ONLINE, set to require detection of line

current when the telephone line is off-hook.

Bit 4: DPSLEEP_DISABLE, set to1 to prevent the data pump

from being put into sleep mode when idle. Placing the data

pump in sleep mode reduces power consumption by

approximately 50 mA. Disabling sleep mode may increase the

modem's reliability, some modem designs experience

occasional problems waking after sleep.

Bit 5: MCSLEEP_DISABLE, set =1 to prevent the Z02215

from being put to sleep when idle. Placing the Z02215 in

sleep mode reduces power consumption by approximately 8

mA. Disabling sleep mode may increase the modem's

reliability, some modem designs experience occasional

problems waking after sleep. Regardless of the setting of

MCSLEEP_DISABLE, the Z02215 is not put into sleep mode

when dial blacklisting.

Bit 6: CID_V23, set =1 to use V.23 when decoding the CID

signal. Set =0 to use B202 when decoding the CID signal.

Bit 7: CID_ENABLE, set to enable the recognition of North

American Caller ID signals.

Note: The default for S92 is 0x80 (or 128 decimal), the AT

command to set the active hybrid would be: ATS92=132

S93–

S246

0–255

–

These S-registers provide direct access to the country

parameters stored in RAM, and are not intended to by used

during normal operation of the modem. Refer to the #QSI

command for a description of updating the modem’s country

parameters in RAM.

Table 7. Modem S-Registers (Continued)

Default

Units

Description

Z02215 Datasheet(PDF) 49 Page - Zilog, Inc.

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