LG KE 770, Service Manual

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3. TECHNICAL BRIEF
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3.2.5. USART Interface
KE770 have two UART Drivers as follow :
- USART1 : Hardware Flow Control / SW upgrade / Calibration
- USART2 : SW debug trace.
Table 3 USART Interface Spec.
3.2.6. ADC channel
BBP ADC block is composed of 7 external ADC channel. This block operates charging process and
other related process by reading battery voltage and other analog values.
Table 4 S-Gold2 ADC channel usage
USART_0(USART1)
Resource Name Remark
USART0_TXD TXD_0 Transmit Data
USART0_RXD RXD_0 Receive Data
USART0_CTS CTS_0 Clear To Send
USART0_RTS RTS_0 Request To Send
DSR N.C.
USART_1(USART2)
USART1_TXD TX_DEBUG Trace data tx
USART1_RXD RX_DEBUG Trace data rx
USART1_CTS N.C. N.C.
USART1_RTS N.C. N.C.
ADC channel
Resource Interconnection Description
M0 BATT_TEMP Battery temperature measure
M1 RF_TEMP RF block temperature measure
M2 JACK_TYPE Accessory type detect
M7 H/W VERSION S-Gold2 H/W version detect
M8 VSUPPLY Battery supply voltage measure
M9 I_MONITOR Current consumption measure
M10 REMOTE_ADC Remote control key detect