1.7.1 Electrical Performance (continued)
tI
tL
tGD
tGI
Special
Information
Tone
Special
Information
Tone
Special
Information
Tone
No Signal Special
SIGIN
Information
Tone
ENABLE
Tri-state
Tri-state
tHIZ
"0"
"0"
D0
D1
tRP
tDRP
tRP
tDE
D2
"0"
D3
"0"
CSN
IRQN
tDI
tDI
tIP
Figure 6 Timing Diagram: Special Information Tones
I
t
tL
tGD
tGI
No Signal Fax/Modem
Low Tone
Fax/Modem
High Tone
Fax/Modem
High Tone
Fax/Modem
High Tone
SIGIN
ENABLE
D0
Tri-state
Tri-state
"0"
tHIZ
tDE
"0"
D1
tRP
tDRP
D2
tRP
D3
"0"
CSN
IRQN
tDI
tDI
tIP
Figure 7 Timing Diagram: Fax/Modem Tones
ã 1999 Consumer Microcircuits Limited
14
D/663/3
CMLMICRO [ CML MICROCIRCUITS ]
