CMX983 Datasheet, PDF (7/93 Pages) CML Microcircuits – Programmable Channel Filter

Analogue Front End (AFE) for Digital Radio
CMX983
2 Block Diagram
CALI
CALQ
IRXP
IRXN
QRXP
QRXN
ITXP
ITXN
QTXP
QTXN
RF1VDD (1.8V)
RF1P
RF1N
CP1
CP1VDD (<5.0V)
FLCK1
RF2VDD (1.8V)
RF2P
RF2N
CP2
CP2VDD (<5.0V)
FLCK2
AUXADC5
AUXADC4
AUXADC3
AUXADC2
AUXADC1
AUXADC0
RX
I
Σ-Δ
ADC
Q _Σ-Δ
ADC
sinc^N/
decimate
128 tap FIR/
decimate
sinc^N/
decimate
128 tap FIR/
decimate
Serial
Ports
Serial
Port
Rx
TX
I _Σ-Δ
DAC
Q _Σ-Δ
DAC
Upsample/
hold
Upsample/
hold
Upsample/
interpolate
Upsample/
interpolate
Serial
Port
Tx
Frac-N
divider
Charge
pump
PLL1
Phase
detect
Frac-N
divider
Charge
pump
PLL2
Phase
detect
Ref
clock 1
Ref
clock 2
RXI
RXQ
Mux
Aux
ADC
Voltage
reference
+
-
+
-
+
-
+
-
+
-
Aux ADC &
Comparators
x2
* AVSS is connected x2
directly to the metal pad x2
on the underside of the ^x2
package
x4
CLK
Master
CLK div
C-BUS Configuration
and Control
Bias
+
-
Aux DAC
Ramp
RAM
9x Aux
DAC
Figure 1 Block Diagram
RXCLK
RXFS
RXD
TXCLK
TXFS
TXD
DVDD (1.8V)
DVSS
IOVDD (3.3V)
IOVSS
AVDD (3.3V)
AVSS*
MCLK
RESETN
SCLK
CSN
CDATA
RDATA
IRQN
VBIAS
VBBUF
AUXDAC8
AUXDAC7
AUXDAC6
AUXDAC5
AUXDAC4
AUXDAC3
AUXDAC2
AUXDAC1
AUXDAC0
 2015 CML Microsystems Plc
7
D/983/6