U3600BM_05 Datasheet, PDF (2/44 Pages) ATMEL Corporation – Single-chip Cordless Telephone IC

Figure 1-1. Block Diagram
MIX1IN2
41
42
GNDLO
OSCGND
MIX2O
MIX2IN
MIX1IN1 MIX1O
XCK VAF
MIX2GND
40
39 38 37
36
35
34
33
Mixer1
Crystal
Oscillator
Mixer2
IFIN1
32
43
LO2
44
LO1
1
PCLO 1
fLO
VCO3 :2
fLO _:N
fRef3
:K
fLO
sin cos
(3)
Phase
Comparator
Serial
Bus
Bias
Bat low
Detector
IFIN2
ETC
31
30
IF
Amp
RSSI
MUXDA
D
A
-+
EXIN
29
28
Expander
Ear
Amp
RECO
RECO2
27
Demo-
dulator
26
RXO
+
DATRX -
25
DAIN
RFOGND ²
RFO ³
4
RFOVB
MixerT
+45
-45
(2)
VCO2
Loop
Filter
5
6
7
:D1
:M12
:D2
:M12
f _Ref2
Phase
Comparator
(1)
:2
:D3
:10
fMod
:M
:2
fRef1
VCO1
Phase
Comparator
9 10
8
11 12 13
1.5V
24
-
Mic
+ VRMIC
23
MIC
MICO
22
Compressor _COIN
21
CTC
20
COUT
+
Spl
Am-p
1.5V
Limiter
19
LIMIN
14 15 16 ₁₇
18
AGND VBIAS VRF
MLF LFGND MODIN
VDD VSS D _C
OPOUT
TXO
DACO
OPIN
(1): PLL1: Modulator PLL
(2): PLL2: Mixer PLL
(3): PLL3: Local oscillator (LO) PLL
2 U3600BM
4516D–CT0–10/05