Si477x-EVB
Table 1. EVB Feature Descriptions
Description
Reference
1
2
J1
FM antenna connector/test conductor.
AM antenna connector
JP1
J33
AM test connector
3
4
Tuner pin/net connection points.
Tuner pin/net connection points.
9 V input to LDOs. Maximum 11 V.
5
J48
J56
J1
6
7
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)
8
J2
9
R72
J57
R74
J60
J59
J58
R73
SW1
10
11
12
13
14
15
16
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.
17
18
J13
J14
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)
19
20
21
22
D3-D6
PB1
LEDs.
MCU Reset.
J15
USB connector.
Current measurement jumpers.
J9-J12
Rev. 0.3
27
SILICON [ SILICON ]
