Dialog DA1468 Series, User Manual

Page: 15 / 60

UM-B-074
DA1468x Range Extender Daughterboard
User Manual Revision 1.1 17-Apr-2018
CFR0012 15 of 60 © 2018 Dialog Semiconductor
Table 4: SKY66112-11 Control Signal Description
Control Signal Function Mode of Operation
CSD FEM Enable signal 0: all off (sleep mode)
1: FEM enabled
CRX RX enable 0: RX off
1: RX on with LNA
CPS Bypass mode 0: Bypass disabled
1: Bypass mode for TX or RX
CTX TX Enable 0: TX off
1: TX on (Low or High power)
CHL TX Power level 0: TX Low power level
1: TX High power level
ANT_SEL Antenna select signal 0: ANT1
1: ANT2
Table 5: Truth Table for SKY66112-11
Mode Description CSD CPS CRX CTX CHL
0 All off (sleep mode) ( Note 1) 0 X X X X
1 Receive LNA mode 1 0 1 0 X
2 Transmit high power mode 1 0 X 1 1
3 Transmit low power mode 1 0 X 1 0
4 Receive Bypass mode 1 1 1 0 X
5 Transmit Bypass mode 1 1 X 1 X
6 All off (sleep mode) 1 X 0 0 X
Note 1 All controls must be at logic 0 to achieve the specified sleep current.
TX/RX_EN
RF
CTX
47 us
CRX
CSD
CPS
CHL
20 us 1 us
20 us
20 us
20 us
47 us
47 us
47 us
Figure 9: SKY66112-11 Control Signal Timing