Z0220112VSGR3470 Zilog, Z0220112VSGR3470 Datasheet - Page 64

• Manufacturer Part Number: Z0220112VSGR3470
• Description: IC MODEM 2400BPS DSP AFE 44-PLCC
• Manufacturer: Zilog

Specifications of Z0220112VSGR3470

• Data Format: V.21, V.22, V.23, Bell 103, Bell 212A
• Baud Rates: 2.4k
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 44-LCC (J-Lead)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PS000904-0107
Originating Modem
The host begins a manual handshake by setting CONFIG register, bit
TRL) to
The host monitors the receive signal status bits in location TRNCTRL and trans-
mits its own responding signals by setting TRNCTRL, bits
the following values:
Table 27. Signal Transmit Values
In the following section, certain acronyms are used to denote the various V.22bis
handshake signals. These are:
Table 28. Handshake Acronyms
1. Take the telephone line off-hook and dial.
2. Program the discrete tone detectors and the biquad tone detectors for answer
3. Upon receiving the 2100 Hz answer tone, set CONFIG to
Name
USB1
SB1
S1
Trnctrl Value
0
1
2
3
4
5
6
7
tones (2100 Hz) and call-progress tones (200–600 Hz). Look for both the
answer tone and call-progress tones (such as busy tones, ring back and so
on).
originate, manual handshake).
1
to prevent the data pump from transmitting its own handshake signals.
Signal Transmitted
Silence
1200 bps Unscrambled Binary 1
S1
1200 bps Scrambled Binary 1
2400 bps Scrambled Binary 1
1200 bps data mode or FSK
2400 bps data mode
2225 Hz tone
Meaning
Unscrambled Binary 1
Scrambled Binary 1
S1 Signal
V.22BIS Data Pump with Integrated AFE
0
–
2
4409h
(TXCTRL) transmits
(V.22, V.22bis
10
(MCUC-
60