SI4770-77-A20 Datasheet, PDF (39/54 Pages) Silicon Laboratories – HIGH-PERFORMANCE CONSUMER ELECTRONICS

Si4770/77-A20
Table 17. Pin Descriptions for Si4777 for IBOC Blend Mode (Continued)
Pin Number
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
PDL
Name
RSTB
SDA
SCL
DFS2
VIO1
VD
DBYP
VIO2
IQCLK
IQFS
IOUT
QOUT
DIN
DFS
DCLK
BLEND
VA
LOUT/ MPXOUT
ROUT
XTAL2/RCLK
XTAL1
DACREF
GPIO2
GPIO1
FMAGC2
FMAGC1
GND PAD
I/O
Description
I Global Chip Reset
I/O I²C Data input/output
I I²C clock
I Digital audio bit clock input (Si4777 for IBOC blend mode)
S Host I/O Supply Voltage (all pads except digital audio and I/Q)
S Digital Voltage Supply
I Digital bypass to Ground
S Digital audio and I/Q interface supply voltage
O ZIF I/Q bit clock output (Si4777)
O ZIF I/Q frame sync output (Si4777)
O ZIF I data output (Si4777)
O ZIF Q data output (Si4777)
I Digital audio data input (Si4777 for IBOC blend mode)
I Digital audio frame sync input
I Digital audio bit clock input
I Blend Flag Control
S Analog Voltage Supply
O Left audio line out / FM MPX output
O Right audio line out
I Crystal oscillator input/Reference clock input
O Crystal oscillator output
I Voltage Reference for analog outputs
I/O General-purpose input/output
I/O General-purpose input/output
I FM automatic gain control 2
I FM automatic gain control 1
I Ground. Reference ground
Rev. 0.9
39