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Signals
PA_BAND
ANT_SW1
ANT_SW2
RF_PWR_DWN
CLKON
PA_EN
S_EN
S_DATA
S_CLK
Table 3-6. RF Control Signals Description
D. SIM interface
The AD6720 provides SIM Interface Module. The AD6720 checks status periodically
during established call mode whether SIM card is inserted or not, but it doesn't check
during deep Sleep mode. In order to communicate with SIM card, 3 signals SIM_DATA,
SIM_CLK, SIM_RST(GPIO_23) are required. The descriptions about the signals are
given by bellow Table 3-7 in detail.
signals
SIM_DATA
SIM_CLK
SIM_RST
Table 3-7: SIM Control Signals Description
3. TECHNICAL BRIEF
Description
PAM Band Select
Antenna switch Band Select
Antenna switch Band Select
Power down input
RF LDO Enable/Disable
PAM Enable/Disable
PLL Enable/Disable
Serial Data to PLL
Clock to PLL
Description
This pin receives and sends data to SIM
card. This model can support only 3.0 volt
interface SIM card.
Clock 3.25MHz frequency
Reset SIM block
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