@@ -22,6 +22,74 @@ time to complete: 7 mins
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25+
26+ ``` mermaid
27+ flowchart LR
28+
29+ subgraph Power_Lines
30+ RAW[RAW POWER]
31+ DCDC1[DC/DC → 3.3V #1]
32+ DCDC2[DC/DC → 3.3V #2]
33+ DCDC3[DC/DC → 5.0V]
34+ DCDC4[DC/DC → Unreg #1]
35+ DCDC5[DC/DC → Unreg #2]
36+ RAW --> DCDC1 --> MAIN_PIC
37+ RAW --> DCDC2 --> COM_PIC
38+ RAW --> DCDC3 --> RESET_PIC
39+ RAW --> DCDC4 --> START_PIC
40+ RAW --> DCDC5 --> BURNER
41+ end
42+
43+ subgraph OBC_Module
44+ MAIN_PIC[MAIN PIC]
45+ COM_PIC[COM PIC]
46+ RESET_PIC[RESET PIC]
47+ START_PIC[START PIC]
48+ MAIN_FM[MAIN FM]
49+ COM_FM[Shared COM FM]
50+ MSN_FM[Shared MSN FM]
51+ MUX1[MUX 1]
52+ MUX2[MUX 2]
53+ end
54+
55+ MAIN_PIC -- SPI --> MUX1
56+ MUX1 -- SPI --> MAIN_FM
57+
58+ COM_PIC -- SPI --> MUX2
59+ MUX2 -- SPI --> COM_FM
60+
61+ MAIN_PIC -- UART --> COM_PIC
62+ MAIN_PIC -- UART --> RESET_PIC
63+ COM_PIC -- UART --> START_PIC
64+ RESET_PIC -- UART --> START_PIC
65+
66+ MAIN_PIC -- SPI --> MSN_FM
67+ COM_PIC -- UART --> OLD_TRX
68+ COM_PIC -- UART --> NEW_TRX
69+
70+ subgraph External_Components
71+ CPLD[CPLD]
72+ FAB_PIC[FAB PIC]
73+ MSN_BOSS[MSN BOSS]
74+ BURNER[BURNER CCT]
75+ UHF[UHF TRX]
76+ OLD_TRX[OLD TRX - ADDNICS]
77+ NEW_TRX[NEW TRX]
78+ end
79+
80+ MSN_BOSS -- UART --> MAIN_PIC
81+ CPLD -- UART --> MSN_BOSS
82+ FAB_PIC -- UART --> MAIN_PIC
83+ MAIN_PIC -- UART --> BURNER
84+ BURNER -- Power --> UHF
85+ ```
86+
87+
88+
89+ In designing the mission circuit of the Birds system, what are the conditions for the supplied voltages and signal inputs and outputs?
90+
91+
92+
2593{: .label}
2694eps
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