IC Data Sheets
8.
8.
IC Data Sheets
This chapter shows the internal block diagrams and pin
configurations of ICs that are drawn as “black boxes” in the
electrical diagrams (with the exception of “memory” and “logic”
ICs).
8.1
Diagram
B02, MxL661 (IC U104)
Figure 8-1 Internal block diagram and pin configuration
19900_300.eps
Block diagram
Pinning information
24
2
3
22
21
20
19
18
17
16
15
14
13
7
8
9
10
11
12
1
2
3
4
5
6
LNA_INP
LNA_INN
A
S
GND_
X
T
AL
CLK_OUT
XTAL_
P
XTAL_
N
VDD_1p
8
VDD_IO
AGC_1
AGC_2/GPO_3
MxL661
VDD_3p3
RE
S
ET_N
VD
D_1p
8
VDD_1p8
GND_DIG
VDD_1p2
IF
_OUT
N_
1
IF_OUTP_1
IF
_O
UTP_2/
GP
O
_
1
IF_OUT
N
_2
/GPO_
2
SDA
SCL
VD
D_
3
p
3
Crystal
Reference
I
2
C
Voltage
Regulator
AGC1
RF
Synth
Gain
Control
IF
Synth
Synth
Calibration
LNA
AGC2
Channel
Filtering
CLK_OUT
IF1 Out
IF2 Out
RF Input
Balun
MxL661