Nokia N80 - Audio Signal Electrical Characteristics; FBUS Interface Electrical Characteristics (between RAP and N2300); Headset Hook Detection Interface (XMICN) Electrical Characteristics

Description Parameter Min Max Unit Notes
Low-level
output voltage
V
OL
0 0.3 V
High-level
output voltage
(driven)
V
OH
2.8 3.6 V
Output signal
crossover
voltage
V
CRS
1.3 2 V
FBUS interface electrical characteristics (between RAP and N2300)
Description Parameter Min Max Unit
High-level input
voltage
V
IH
0.7 x V
DDSHV2
V
DDSHV2
V
Low-level Input
voltage
V
IL
0 0.3 x V
DDSHV2
V
High-level output
voltage
V
OH
0.8 x V
DDSHV2
V
DDSHV2
V
Low-level output
voltage
V
OL
0 0.22 x V
DDSHV2
V
Rise/fall time
tR/tF
0 25 ns
(VDDSHV2 = 1.8V)
Headset hook detection interface (XMICN) electrical characteristics
Description Min Typ Max Unit Notes
Hook detection
threshold 1
1.25 1.35 1.45 V Two fixed
thresholds
inside N2200.
Selectable by
SW
Hook detection
threshold 2
0.5 0.6 0.7 V
Hook detection
hysteresis
25 mV
Hook detection
pull ups
1 2 4 uA
Audio signal electrical characteristics
Description Parameter Typ Unit Notes
XMIC N Audio in 1 V
pp
DC Offset 2.5-2.78V
XMIC P Audio in 1 V
pp
DC Offset 2.5-2.78V
RM-91; RM-92
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