User Guide

PAMS
Technical Documentation
NSE–5
System Module
Page 2 – 9
Issue 1 07/99
Table 3. System/IBI connector (continued)
DescriptionUnitMaxTypMinFunctionNameIB-
pin
Pin
8 Yes XMIC Analog
audio in-
2.0 2.2 kW Input AC impedance
au
di
o
i
n-
put
(from ac-
cessory to
100 W Accessory source AC imped-
ance
cessory to
phone)
1 V
p–p
Maximum signal level
Headset
micro
-
2.0 2.2 kW Input AC impedance
micro
-
phone in-
put
(from ac
-
2.5 kW Headset source AC imped-
ance
(from
ac
-
cessory to
p
hone)
100 600 mA Bias current
hone)
200 mV-
p–p
Maximum signal level
Accessory
mute.
Voltage
compared
2.5 2.9 V Not muted
compared
to SGND.
(from
phone to
0 1.55 V Muted, without headset
hone
to
accesso-
ry)
1.6 2.0 2.4 V Comparator reference in ac-
cessory
Headset
dt ti
1.47 2.9 V No headset (ref. SGND).
detection
(from
accessory to
0 1.33 V Headset connected (ref.
SGND).
accessory
to
phone)
(NO TAG)
49 kW Pull–up resistor to VBB in
phone
9 Yes SGND Audio sig-
nal
d
47 W Output AC impedance (ref.
GND)
a
ground.
Se
p
arated
10 mF Series output capacitance
Separated
from
phone
380 W Resistance to phone ground
(DC) (in phone)
hone
GND
(from
p
hone to
100 kW Resistance to accessory
ground (in accessory)
p
h
one to
accesso-
r
y)
–0.2 +0.2 V DC voltage compared to
phone GND
ry)
–5 +5 V DC voltage compared to ac-
cessory GND