User's Manual
Table Of Contents
- General description
- Interfaces
- General Purpose Connector (GPC)
- Power supply
- Electrical information for digital I/O
- LCD interface
- SPI Auxiliary bus
- Keyboard interface
- Main serial link (UART1)
- Auxiliary serial link (UART2)
- SIM interface
- General Purpose Input/Output
- Activity status indication
- Analog to Digital Converter (ADC)
- Audio interface
- Battery charging interface
- ON / ~OFF
- BOOT (optional)
- Reset signal (~RST)
- External Interrupt (~INTR)
- VCC output
- Real Time Clock Supply (VCC_RTC)
- RF interface
- Technical specifications
- Appendix
WM_PRJ_Q2400_PTS_002 - 004
March 5, 2004
2.13.2.2 Speaker 2 Outputs
Pin description
Signal Pin # I/O I/O type Description
SPK2P 45 O Analog Speaker 2 positive output
SPK2N 47 O Analog Speaker 2 negative output
2.13.2.3 Speaker 1 Outputs
Pin description
Signal Pin # I/O I/O type Description
SPK1P 41 O Analog Speaker 1 positive output
SPK1N 43 O Analog Speaker 1 negative output
2.13.3 Buzzer Output
The buzzer output (BUZ) is a digital one. A buzzer can be directly connected between this output
and VBATT. The maximum current is 80 mA (PEAK).
Pin description
Signal Pin # I/O I/O type Description
BUZ 49 O Analog
(open collector)
Buzzer output
Operating conditions
Parameter Condition Min Max Unit
V
OL
I
AVERAGE
= 40 mA 0.6
V
I
PEAK
VBATT = VBATTmax 80
mA
I
AVERAGE
VBATT = VBATTmax 40
mA
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