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3. HW Circuit Description
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3.5.4 Monitoring ADC
The monitoring ADC (MADC) consists of a 10-bit analog-to-digital converter (ADC) combined with an
11- input analog multiplexer. The ADC implementation consists of a successive approximation
conversion.
Five of the eleven inputs are available externally (ADIN1..5), and the remaining six inputs are
dedicated to die temperature measurement, main battery voltage, backup battery voltage, charger
voltage, charger current monitoring and USB Vbus voltage. Three external inputs (ADIN1..3) are
standard inputs. The two others (ADIN4..5) which are associated with current sources, are intended
for battery temperature and battery type measurements.
3.5.5 Switch ON/OFF
KM710c Power State: Defined 4cases as follow
- Power-ON: mobile is powered by main battery or backup battery.
- Power-OFF: mobile isn’t any battery.
- Switch-ON: mobile is powered and waken up from switch-off state.
- Switch-OFF: mobile is powered to maintain only the permanent function(ULPD).
To enter into Switch-ON state, one of following 4 condition is satisfied.
- PWR-ON pushed after a debouncing time of 30ms.
- ON_REMOTE: After debouncing, when a falling edgeis detected on RPWON pin.
- IT_WAKE_UP: When a rising edge is detected on RTC_ALARM pin.
- CHARGER_IC:When a charger voltage is above VBAT+0.4V on VCHG.
3.5.6 Memories
- 1G Mbit NAND Flash + 512Mbit DDR RAM
<Table.5> ADC Channel Spec
P
Interface Pin
in No
NET Name
I/ O
Commen t
PWON
L10
PWON
I
Power On Key
RPWON
H7
RPWON
I
Remot e power on key
PCLKREQ
M12
BT_CLK_REQ
I
BT c lock request
ADC1
D5
TEMP_SENSE
I
RF block temper ature
ADC2
B4
JACK_TYPE
I
Jack type deteect
ADC3
A4
LCD_ID
I
LCD ID detect
ADC4
C5
REMOTE_ADC
I
Remmoco n ADC value indicate
ADC5
B5
BATT_INSERT
I
Pull down, battery insert input(USB)
VBACKUP
H8
VBACKUP
O
backup battery
SIM_DTC
J7
REMOTE_INT
I
Rem ote c ontrol Interrupt Input
VIBDR
M10
VIBRATOR
O
Vibrator
LED_A
C12
LED_B
B12
LED_C
A12
N.C
-
N.C
LED_MAINKEY
O
Main key LED
Содержание KM710
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