Initial Ti375 GNSS IMU board design and documentation

2026-08-15 18:09:17 +03:00
commit b706197667
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+EESchema Schematic File Version 4
+LIBS:board-cache
+EELAYER 29 0
+EELAYER END
+$Descr A0 46811 33110
+encoding utf-8
+Sheet 1 1
+Title "Ti375 GNSS/IMU board - Imu"
+Date "2026-08-15"
+Rev "A0"
+Comp "Open hardware design for JLCPCB"
+Comment1 "Generated from scripts/design_data.py; do not hand-edit"
+Comment2 "No LEDs, no push buttons"
+Comment3 "Ti375C529C3 / MAX2771 / SCH16T-K01-1"
+Comment4 "JLC08161H-3313 eight-layer stack"
+$EndDescr
+$Comp
+L BOARD_U22 U22
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+F 1 "SCH16T-K01-1" H 1800 1900 50  0000 C CNN
+F 2 "board:Murata_SCH16T_K01" H 1800 1600 50  0001 C CNN
+F 3 "" H 1800 1800 50  0001 C CNN
+F 4 "SCH16T-K01-1" H 1800 1800 50  0001 C CNN "MPN"
+F 5 "Murata" H 1800 1800 50  0001 C CNN "Manufacturer"
+	1    1800 1800
+	1    0    0    -1
+$EndComp
+Wire Wire Line
+	1100 2350 950 2350
+Text GLabel 950 2350 2    30   BiDi ~ 0
+GND
+NoConn ~ 2500 2350
+Wire Wire Line
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+Text GLabel 950 2250 2    30   BiDi ~ 0
+GND
+Wire Wire Line
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+Text GLabel 2650 2250 0    30   BiDi ~ 0
+GND
+Wire Wire Line
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+Text GLabel 950 2150 2    30   BiDi ~ 0
+GND
+Wire Wire Line
+	2500 2150 2650 2150
+Text GLabel 2650 2150 0    30   BiDi ~ 0
+IMU_EXTRESN
+Wire Wire Line
+	1100 2050 950 2050
+Text GLabel 950 2050 2    30   BiDi ~ 0
+GND
+Wire Wire Line
+	2500 2050 2650 2050
+Text GLabel 2650 2050 0    30   BiDi ~ 0
+IMU_3V3
+Wire Wire Line
+	1100 1950 950 1950
+Text GLabel 950 1950 2    30   BiDi ~ 0
+GND
+Wire Wire Line
+	2500 1950 2650 1950
+Text GLabel 2650 1950 0    30   BiDi ~ 0
+IMU_VREGA2
+Wire Wire Line
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+IMU_VREGA2
+Wire Wire Line
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+Text GLabel 2650 1850 0    30   BiDi ~ 0
+GND
+Wire Wire Line
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+Text GLabel 950 1750 2    30   BiDi ~ 0
+GND
+Wire Wire Line
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+Text GLabel 2650 1750 0    30   BiDi ~ 0
+IMU_VREGD
+Wire Wire Line
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+Text GLabel 950 1650 2    30   BiDi ~ 0
+IMU_VREGD
+Wire Wire Line
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+Text GLabel 2650 1650 0    30   BiDi ~ 0
+GND
+Wire Wire Line
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+Wire Wire Line
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+Text GLabel 2650 1550 0    30   BiDi ~ 0
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+IMU_DRY_SYNC
+Wire Wire Line
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+IMU_SCK_DEV
+Wire Wire Line
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+IMU_CS_DEV
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+$Comp
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+F 3 "" H 1800 3600 50  0001 C CNN
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+F 5 "Murata" H 1800 3600 50  0001 C CNN "Manufacturer"
+	1    1800 3600
+	1    0    0    -1
+$EndComp
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+Wire Wire Line
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+IMU_3V3
+$Comp
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+F 3 "" H 1800 4400 50  0001 C CNN
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+F 5 "Yageo" H 1800 4400 50  0001 C CNN "Manufacturer"
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+	1    0    0    -1
+$EndComp
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+Wire Wire Line
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+Text GLabel 2650 4400 0    30   BiDi ~ 0
+IMU_SCK_DEV
+$Comp
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+F 1 "22R" H 1800 5300 50  0000 C CNN
+F 2 "Resistor_SMD:R_0402_1005Metric" H 1800 5000 50  0001 C CNN
+F 3 "" H 1800 5200 50  0001 C CNN
+F 4 "RC0402FR-0722RL" H 1800 5200 50  0001 C CNN "MPN"
+F 5 "Yageo" H 1800 5200 50  0001 C CNN "Manufacturer"
+	1    1800 5200
+	1    0    0    -1
+$EndComp
+Wire Wire Line
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+Text GLabel 950 5200 2    30   BiDi ~ 0
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+Wire Wire Line
+	2500 5200 2650 5200
+Text GLabel 2650 5200 0    30   BiDi ~ 0
+IMU_MOSI_DEV
+$Comp
+L BOARD_R59 R59
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+F 3 "" H 1800 6000 50  0001 C CNN
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+F 5 "Yageo" H 1800 6000 50  0001 C CNN "Manufacturer"
+	1    1800 6000
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+$EndComp
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+Wire Wire Line
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+$Comp
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+F 3 "" H 1800 6800 50  0001 C CNN
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+F 5 "Yageo" H 1800 6800 50  0001 C CNN "Manufacturer"
+	1    1800 6800
+	1    0    0    -1
+$EndComp
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+Text GLabel 950 6800 2    30   BiDi ~ 0
+IMU_MISO_DEV
+Wire Wire Line
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+Text GLabel 2650 6800 0    30   BiDi ~ 0
+IMU_MISO
+$Comp
+L BOARD_R61 R61
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+F 2 "Resistor_SMD:R_0402_1005Metric" H 1800 7400 50  0001 C CNN
+F 3 "" H 1800 7600 50  0001 C CNN
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+F 5 "Yageo" H 1800 7600 50  0001 C CNN "Manufacturer"
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+	1    0    0    -1
+$EndComp
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+Text GLabel 950 7600 2    30   BiDi ~ 0
+IMU_EXTRESN
+Wire Wire Line
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+Text GLabel 2650 7600 0    30   BiDi ~ 0
+GND
+$Comp
+L BOARD_C103 C103
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+F 3 "" H 1800 8400 50  0001 C CNN
+F 4 "GRM155R71A104KA01D" H 1800 8400 50  0001 C CNN "MPN"
+F 5 "Murata" H 1800 8400 50  0001 C CNN "Manufacturer"
+	1    1800 8400
+	1    0    0    -1
+$EndComp
+Wire Wire Line
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+Text GLabel 950 8400 2    30   BiDi ~ 0
+IMU_3V3
+Wire Wire Line
+	2500 8400 2650 8400
+Text GLabel 2650 8400 0    30   BiDi ~ 0
+GND
+$Comp
+L BOARD_C104 C104
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+F 3 "" H 1800 9200 50  0001 C CNN
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+F 5 "Murata" H 1800 9200 50  0001 C CNN "Manufacturer"
+	1    1800 9200
+	1    0    0    -1
+$EndComp
+Wire Wire Line
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+Text GLabel 950 9200 2    30   BiDi ~ 0
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+Wire Wire Line
+	2500 9200 2650 9200
+Text GLabel 2650 9200 0    30   BiDi ~ 0
+GND
+$Comp
+L BOARD_C105 C105
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+$EndComp
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+Wire Wire Line
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+$Comp
+L BOARD_C106 C106
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+F 5 "Murata" H 1800 10800 50  0001 C CNN "Manufacturer"
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+$EndComp
+Wire Wire Line
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+IMU_VREGD
+Wire Wire Line
+	2500 10800 2650 10800
+Text GLabel 2650 10800 0    30   BiDi ~ 0
+GND
+$EndSCHEMATC