LG C1150 Service Manual page 25

3. TECHNICAL BRIEF
C. RF interface
The AD6525 control RF parts through PA_BAND, ANT_SW1, ANT_SW2, CLKON , PA_EN, S_EN,
S_DATA, S_CLK, RF_PWR_DWN
GPO Signal Name
17 PA_BAND
9 ANT_SW1
11 ANT_SW2
- CLKON
16 PA_EN
19 S_EN
20 S_DATA
21 S_CLK
4 RF_PWER_DWN
D. SIM interface
The AD6525 check status periodically in call mode if SIM card is inserted or not, but the AD6525
don't check in deep sleep mode.
Interface by SIM_DATA, SIMCLK, SIM_RST(GPIO_23)
SIM_DATA
SIMCLK
SIM_RST(GPIO_23)
Table 3-4. RF CONTROL SIGNALS DISCRIPTION
PAM Band Select
Antenna switch Band Select
Antenna switch Band Select
RF LDO Enable/Disable
PAM Enable/Disable
PLL Enable/Disable
Serial Data to PLL
Clock to PLL
Powerdown Input
Table 3-5. SIM CONTROL SIGNALS DISCRIPTION
This pin receives and sends data to SIM card. This model support only
3.0 volt interface SIM card.
Clock 3.25MHz frequency.
Reset SIM block
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Description
Description
Reset