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Si477x-EVB
Table 1. EVB Feature Descriptions
Reference
Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
J1
JP1
J33
J48
J56
J1
J2
R72
J57
R74
J60
J59
J58
R73
SW1
J13
J14
D3-D6
PB1
J15
J9-J12
FM antenna connector/test conductor.
AM antenna connector
AM test connector
Tuner pin/net connection points.
Tuner pin/net connection points.
9 V input to LDOs. Maximum 11 V.
VIO 1/2 inputs. Source with bench power supply if on-board LDOs are not used.
VA/VD inputs. Source with bench power supply if on-board LDOs are not used.
VIO1 LDO adjust. (1.2 – 3.6 V, nominal 3.3 V)
Selects tuner VIO1 source from LDO or TERMinal.
VIO2 LDO adjust. (1.7–3.6 V, nominal 3.3 V)
Selects tuner VIO2 source from LDO or TERMinal.
Selects tuner VA source from fixed 5 V LDO/USB or TERMinal.
Selects tuner VD source from LDO or TERMinal.
VD LDO adjust. (2.7–3.6 V, nominal 3.3 V)
Selects USB or 9 V input to LDO. Note that in USB position PC 5 V sources VA directly which
could result in decreased performance. Center position is off.
L/R_LINE_OUT. L/R lineout (direct from tuner). (Rev 3 and later)
Buffered/110 kHz lowpass filtered L-ch analog output when in MPX mode. (Rev 2)
HEADPHONE_OUT. Buffered headphone out. (Rev 3 and later)
Buffered, 30 kHz lowpass filtered L, R channel outputs when in L/R audio mode. (Rev 2)
LEDs.
MCU Reset.
USB connector.
Current measurement jumpers.
Rev. 0.4
27
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