User's Manual

6 (26)
Created by : Reference Title
David COROLLEUR DC-2008-029 Hands Free Car Kit Module CK5050+ - Datasheet
Revised by : Date edition N° :
David COROLLEUR 15/04/2008 1.01
Approved by : Date Function
2.2 Electrical Interfaces Characteristics
Absolute Maximum Rating
Min Max
Unit
Supply Voltage
-0.3 3.8 V
Storage Temperature
-40 +125 °C
Operating Conditions
Min Max
Unit
Supply Voltage
3,2 3.6 V
Ambiant Temperature
-40 +85 °C
 UART: 16C550 Compatible Type. A bit “Start Bit=0” is added to the beginning of each word (8bits). The Least
Significant Bit (LSB) is sent first. A “Stop Bit=1” is sent by the transmitter at the end of each word.
MaxVOL=0.15V
MinVOH=Vcc-0v15 (at IOH=0.1mA) open collector with build in 2.5k pull up
MaxVIL=0.8V
MinVIH=2V
UART0_TX & UART1_TX:
Min Max Condition
Trise (ns) 10 Cload = 50pF
Tfall (ns) 10 Cload = 50pF
The UART1_RX and UART0_RX are Schmitt trigger inputs
 I2C
MaxVOL=0.15V
MinVOH=Vcc-0v15
MaxVIL=0.8V
MinVIH=2V
 RESET: Asynchronous reset signal, used to reset the Parrot Daughter Board, active low.
MaxVIL=0.4V
MinVIH=2.5V
 MIC_PWR: Connect to electret condenser microphone (Impedance less than 2.2kOhms)
Electrical characteristics of microphone:
Operating voltage: 2..02V-2.48V DC
Current consumption: 500µA max.
Use of pre-amplified microphones is in option.
Optional: another power supply (from motherboard) can be used to supply the microphone(s)
 VCC: Supply voltage 3.4V(-0.2V/+0.2V) including tolerances, thermal changes, noise over/under shoot due to
load change and/or car battery voltage change, load dump.
Mean current : <300 mA (All components active and communication or streaming mode)
Peak current < 1.5A during switch on: > mA during 700 ms (max).