PBL40215 Datasheet, PDF (13/22 Pages) Ericsson – RF Transceiver circuit for the Digital Enhanced Cordless Telecommunications (DECT) system

PBL 402 15
SHOLD
0
1
"hold" SLICE level ^b).
MOD
GATE
0
1
MOD_SW
0
1
MOD_P
MOD_EN
0
1
GATE_P
Tristate CP
PA-timing ^a).
control
RF enable
Charge pump control
12 bit B-word latch
PA_GATE
CK
Data
ST
165k
EN
RXEN
165k
TXEN
Figure 9. Control logic.
24 bit shift register
23 bit A-word latch
CE
CL
SYN_EN ⁰
1
IF_EN ⁰
1
RX_EN ⁰
1
TX_EN ⁰
1
Nc
Synth.
TXVCO power on
RXVCO power on
Digital interface power on
Synth. power on
IF trim.
RX gain
TX power
DRX control
IF power on
RX power on
TX power on
a). See figure PA_GATE timing diagram.
b). See figure SLICE control.
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