SI4770-77-A20 Datasheet, PDF (38/54 Pages) Silicon Laboratories – HIGH-PERFORMANCE CONSUMER ELECTRONICS

Si4770/77-A20
NC 1
FMXIP 2
FMXIN 3
RFGND 4
RFREG 5
FMO 6
FMI 7
NC 8
NC 9
AMI 10
GND PAD
30 BLEND
29 DCLK
28 DFS
27 DIN
26 QOUT
25 IOUT
24 IQFS
23 IQCLK
22 VIO2
21 DBYP
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Figure 23. Si4777 Pin Descriptions for IBOC Blend Mode
Table 17. Pin Descriptions for Si4777 for IBOC Blend Mode
Name
NC
FMXIP
FMXIN
RFGND
RFREG
FMO
FMI
NC
NC
AMI
A0
INTB
DCLK2
DOUT2
I/O
Description
I No connect: Leave floating
I Balanced input to FM mixer (positive)
I Balanced input to FM mixer (negative)
RF Ground
O FM LNA regulator
O FM LNA output
I FM LNA input
No connect: Leave floating
No connect: Leave floating
I AM single-ended input
I I²C Address 0
O Interrupt active low (Si4777 for IBOC blend mode)
I Digital audio bit clock input (Si4777 for IBOC blend mode)
O Digital audio output (Si4777 for IBOC blend mode)
38
Rev. 0.9