RTL2832U and Rafael Micro R820T tuner
TODO: what is Rafael Micro R820T tuner, and what is the relationship between RTL2832U and Rafael Micro R820T tuner?
RTL2832U
RTL2832U is a digital TV tuner chip designed by Realtek. It is used in a variety of consumer products, including DVB-T USB dongles.
Rafael Micro R820T tuner
R820T is a low-cost, high-performance silicon tuner that supports both analog and digital TV signals. It is used in a variety of consumer products, including DVB-T USB dongles.
Supported gain values (29): 0.0 0.9 1.4 2.7 3.7 7.7 8.7 12.5 14.4 15.7 16.6 19.7 20.7 22.9 25.4 28.0 29.7 32.8 33.8 36.4 37.2 38.6 40.2 42.1 43.4 43.9 44.5 48.0 49.6
Relationship
Data Path Control Path
[ANTENNA] --------|---------------------------|-------------
| |
V |
+------------------------+ |
| Rafael Micro R820T |<-------------------|
| Tuner | I²C Control |
| | |
| - RF Input | |
| - IF Output |--------------------|
+------------------------+ IF Signal |
| |
V |
+------------------------+ |
| RTL2832U | |
| Demodulator & USB Int. |--------------------|
| | I²C Control |
| - IF Input | |
| - USB Output |--------------------|
+------------------------+ USB Data |
| |
V |
[USB CONNECTION]--|---------------------------|-------------
| |
V |
+------------------------+ |
| PC | |
| | |
| - SDR Software | |
| - User Interface | |
+------------------------+ |