User Guide

6015/6015i/6016i/6019i (RH-55), 6012 (RM-20)

System Module Nokia Customer Care

The output for the internal earpiece is a differential type output, and the differential

output is capable of driving 4Vpp to the earpiece with a 60 dB minimum signal to total

distortion ratio. Input and output signal source selection and gain control is performed

inside the UEM ASIC according to control messages from the UPP. Both a buzzer and an

external vibra alert control signals are generated by the UEM with separate PWM

outputs.

UI Drivers

The vibra, display LED, and keyboard LEDs are driven by open collector output drivers

inside UEM. These drivers can generate PWM square wave signals to these devices.

AD Converters

There is an 11-channel analog-to-digital converter in UEM. The AD converters are

calibrated in the production line.

BB-RF Interface Connections

All the signal descriptions and properties in the following tables are valid only for active

signals.

Table 4: PDM Interface

Signal

Name

From To Parameter Min Type Max Unit Function

RX_IF_AGC

UPP

GenIO

Batman

Voltage Minimum 0.0 0.1 V Controls the gain

of the VGA and

mixer in the

receiver

Voltage Maximum 1.75 1.8 1.86

Resolution 10 bits

Load resistance 1 Kohm

Load capacity 100 nf

Setting time 0.2 ms

Source impedance 200 Ohm

Step size 7.03 mV

Filter value 27

kohm

Polarity Decreasing PDM voltage increases the gain.

Reset state N/A Input,

SW-controlled

pulldown

Clk Rate

(1)

9.6 19.2 MHz