Z0220112VEGR4078 Zilog, Z0220112VEGR4078 Datasheet - Page 55

• Manufacturer Part Number: Z0220112VEGR4078
• Description: IC MODEM 2400BPS DSP AFE 44-PLCC
• Manufacturer: Zilog

Specifications of Z0220112VEGR4078

• 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

Tone Detectors
PS000904-0107
DTMFh_lev (0x1A1)
For example, to generate a 2100 Hz Answer Tone for 3.3 seconds at –10dBm:
1. Set location TONEGENA to
2. Set location DTMFL_LEV to
3. Set location DTMFH_LEV to
4. Set CONFIG register, bits 0–6 (MODE) to
5. Wait 3.3 seconds before setting CONFIG register, bits 0–6 (MODE) to
There are 16 tone detectors in the data pump. They are programmed by setting
up one word for each tone detector. There is one global threshold setting for all 16
tone detectors. The address for the tone detectors are as follows:
•
•
•
(STANDBY).
Tone Detector Coefficients—
(Tone0–Tone15)
Tone Detector Receive Levels—
(DTD0lev–DTD15lev)
Tone Detector Threshold–
High Band Tone (0x196)
*
Figure 10. Transmitting Tones
Transmitted Tones
03h
015FEh
0287h
0145
0
+
, disabling TONEGENB.
026h
–
.
0154h
.
Low Band Tone (0x196)
V.22BIS Data Pump with Integrated AFE
–
035h
1
(transmit tone).
*
DTMFl_lev (0x1A0)
0
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