GX500 Operational Description Revision A
LG Electronics 33/143 LGE Property
3.2.2.3 RF Interface
S-GOLDradio uses this interface to control RF IC and Peripherals. 6 signals are provided switch on/off RF ICs
Periodically each TDMA frame.
Table 3-7 RF Interface Spec.
T_OUT
Resource Interconnection Description
PABS S2_PA_BAND TX RF band select
T_OUT6 PA_MODE_2 PAM Mode select
FE1 VC1 FEM control
FE2 VC2 FEM control
PAEN PA_EN PAM Power on
VRAMP TX_RAMP APC
3.2.2.4 USART Interface
GX500(SGold Radio Part) has a UART Driver as follow :
- USART1 : Hardware Flow Control / SW upgrade / Calibration
Table 3-8 USART Interface Spec.
USART_0(USART1)
Resource Name Remark
USART0_TXD SIM2_UART_TX Transmit Data
USART0_RXD SIM2_UART_RX Receive Data
3.2.2.5 ADC channel
SGold Radio 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 3-9 S-GOLDradio ADC channel usage
ADC channel
Resource Interconnection Description
M0 BAT_ID Battery IC check
M1 RF_TEMP RF block temperature measure
M8 VSUPPLY Battery supply voltage measure
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