Issue 2 06/2005
COMPANY CONFIDENTIAL
23
Copyright © 2005 Nokia. All Rights Reserved.
RH-53/54
8-System Module
Nokia Customer Care
Table 13:
Comparator threshold levels and pull-up current source strength (hysteresis included)
Note that hysteresis of the comparators has been taken into account in the HOOKINT
and HEADINT Min and Max values.
PnPHF Detection
PnPHF accessory uses 4-wire fully differential audio connection. The accessory is detected by
the Headint signal when the plug is inserted.
Parameter
Variable
Min
Typ
Max
HOOKINT comparator thresh-
old
Vhook1
1.21 V
1.35 V
1.49 V
HOOKINT comparator thresh-
old
Vhook2
0.50 V
0.60 V
0.70 V
HEADINT comparator thresh-
old
Vhead
1.71 V
1.90 V
2.09 V
VFLASH1 voltage regulator
VFLASH1
2.70 V
2.78 V
2.86 V
Current source strength
Ipullup
1
µ
A
2
µ
A
4
µ
A
