Nokia N81 - Baseband Technical Specifications; External Interfaces; SIM if Connections

Signal
name
Function/
Parameter
Min Typ Max Unit Note
HSEARL*) HS Ear L audio
output
- - 2 Vpp SPR
requirement
HSEARR*) HS Ear R audio
output
- - 2 Vpp SPR
requirement
Micbias HS MIcbias
Voltage
2,05 2,1 2,25 V
ECI Vin high 1,7 - 2,6 V
ECI Vin low 0 - 0,7 V
*) Non EU variants have +6dB higher max level (double max value)
Baseband technical specifications
External interfaces
Name of connection Connector reference
USB X2030 (on engine PWB)
Charger plug X2000
AV connector (Headset) X2001 (on engine PWB)
SIM reader X2700 (on engine PWB)
Micro SD reader X3200 (on engine PWB)
Battery connector X2070 (on engine PWB)
SIM IF connections
Pin Signal I/O Engine connection Notes
C1 VSIM Out EM ASIC N2200 VSIM1 Supply voltage to SIM card, 1.8V or
3.0V.
C2 SIMRST Out EM ASIC N2200 SIMRstC1 Reset signal to SIM card
C3 SIMCLK Out EM ASIC N2200 SIMClkC1 Clock signal to SIM card
C5 GND - GND Ground
C7 SIMDATA In/Out EM ASIC N2200 SIMDaC1 Data input /output
RM-179; RM-223
System Module and User Interface
Issue 1 COMPANY CONFIDENTIAL Page 6 –39
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