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Z02215 Datasheet(PDF) 54 Page - Zilog, Inc.

Part # Z02215
Description  Single Chip Modem with Integrated Controller, Data Pump, and Analog Front End
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Manufacturer  ZILOG [Zilog, Inc.]
Direct Link  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

Z02215 Datasheet(HTML) 54 Page - Zilog, Inc.

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Z02215
Single Chip Modem with Integrated Controller, Data Pump, and AFE
PS001907-0904
Transmitted Data Spectrum
48
Transmitted Data Spectrum
The transmitted data spectrum, with compromised equalization disabled, is
shaped in the baseband of the Finite Impulse Response (FIR) filter. Table 10
reflects the spectrum characteristics.
Active Hybrid Circuit and Relay Driver
An active hybrid circuit is added to the Analog Front End (AFE) of the Z02215 to
improve the received signal quality level by 20dB and to improve the modem per-
formance. The on-chip active hybrid reduces system level costs by reducing the
Table 9. Selectable Configurations
Configuration
Modulation1,2
Carrier
Frequency
Data Rate
(bps)
Symbol
Rate
(baud)
Bits
Per
Symbol
Constellation
Points
V.22 bis 2400
QAM
1200/2400
2400
600
4
16
V.22 bis 1200
DPSK
1200/2400
1200
600
2
4
V.22 1200
DPSK
1200/2400
1200
600
2
4
V.23 1200/75
FSK
1700/420
1200/75
1200/75
1
–
V.21
FSK
1080/1750
300
300
1
–
Bell 212A
DPSK
1200/2400
1200
600
2
4
Bell 103
FSK
1170/2125
300
300
1
–
Bell 202/ Bell
202T 1200/150
FSK
1700/437
1200/150
1200/150 1
–
Notes:
1. QAM is Quadrature Amplitude Modulation FSK is Frequency Shift Key
2. Tone is Single or Dual Tone (DTMF), TM is Trellis Modulation, DPSK is Dual Phase Shift Keying
Table 10. Spectral Shaping
Mode
Carrier Freq
Spectral Power Shaping Function
V.22
1200/2400
square root 75% Raised Cosine at 600 baud
V.22bis
1200/2400
square root 75% Raised Cosine at 600 baud
Bell 212A
1200/2400
square root 75% Raised Cosine at 600 baud
Note: The carrier and the spectral shaping are selected automatically according to the Configuration.


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