FX929B Datasheet, PDF (30/48 Pages) CML Microcircuits – Flexible Operating Modes

4-Level FSK Modem Data Pump
FX929B
Figure 15a Input Signal to RRC Filter iTnx Mode for TXIMP = 0 and 1
Figure 15b Tx Signal Eye TXIMP = 0
Figure 15c Tx Signal Eye TXIMP = 1
Note that setting TXIMP to '1' affects the Tx output signal level as shown in section 1.7.1 and the table below:
Nominal voltage difference between continuous '+3' and
continuous '-3' symbol outputs.
TXIMP = 0
0.157 V_DD
Nominal Vp-p for continuous '+3 +3 -3 -3..' symbol
pattern
0.20 V_DD
TXIMP = 1
0.157 V_DD
0.22 V_DD
© 1997 Consumer Microcircuits Limited
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D/929B/1