User Guide

PAMS
UIF Module DU8
NHB–3
Technical Documentation
Original 26/97
Page 5–7
Table 4. Other AC Specifications
BUZZER 2.7kHz Minimum Typical/Nominal Maximum NOTES
Buzzer 90 dB (S.P.L.) Level measured
30 cm from
the buzzer with
pulse ratio 50/50
External Signals and Connections
Table 5. To Radio Module
Signal Name Pin / Conn. Notes
VL1 1 Logic supply voltage 4.65V
GND 2 Ground
VBATT 3, 30 Battery voltage
BACKLIGHT 4 Backlights on/off
UIF(0:6) 5 – 11 Lines for keyboard read and LCD–controller control
MIC_ENA 12 Microphone bias enable
COL(0:3) 13 – 16 Lines for keyboard write
CALL_LED 17 Call led enable
MICP 18 Microphone (positive node)
MICN 19 Microphone (negative node)
EARP 20 Earpiece (negative node)
EARN 21 Earpiece (positive node)
BUZZER 22 PWM signal buzzer control
XPWRON 23 Power key (active low)
VA1 24 Analog supply voltage 4.65V
SIMCLK 25 3.25 MHz Clock for SIM data
SIMRESET 26 Reset for SIM
VSIM 27 SIM voltage supply
SIMDATA 28 Serial data for SIM
AGND 29 Analog ground for the microphone