Changes in cd7b459: rpi4m

				Chip-dat/74xx-dat/74xx-dat.md
			
          @@ -14,6 +14,18 @@

           - [[74xx04-dat]] == Hex Inverter

          +## 74LVC1G07SE-7

          +

          +SINGLE BUFFER/DRIVER WITH OPEN DRAIN OUTPUT

          +

          +```

          +Function Table

          +Input Output

          +A Y

          +H Z

          +L L

          +```

          +

           ## 74HC165D

           ![](2024-09-20-11-33-37.png)

				Chip-dat/ST-dat/STMPS21x1-dat/2023-11-30-15-52-54.png
			
          Binary files /dev/null and b/Chip-dat/ST-dat/STMPS21x1-dat/2023-11-30-15-52-54.png differ

				Chip-dat/ST-dat/STMPS21x1-dat/2025-10-26-21-00-28.png
			
          Binary files /dev/null and b/Chip-dat/ST-dat/STMPS21x1-dat/2025-10-26-21-00-28.png differ

				Chip-dat/ST-dat/STMPS21x1-dat/STMPS21x1-dat.md
			
          @@ -0,0 +1,34 @@

          +

          +# STMPS21x1-dat

          +

          +

          +### STMPS 2151

          +

          +Enhanced single channel power switches

          +

          +https://www.st.com/en/switches-and-multiplexers/stmps2151.html

          +

          +The STMPS2141, STMPS2151, STMPS2161, STMPS2171 power distribution switches are intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. These devices incorporate 90 mΩ N-channel MOSFET high-side power switches for power distribution. These switches are controlled by a logic enable input.

          +

          +All features

          +- 90 mΩ high-side MOSFET switch

          +- 500/1000 mA continuous current

          +- Thermal and short-circuit protection with overcurrent logic output

          +- Operating range from 2.7 to 5.5 V

          +- CMOS and TTL compatible enable input

          +- Undervoltage lockout (UVLO)

          +

          +![](2023-11-30-15-52-54.png)

          +

          +- [[RPI-CM4-expansion-board-dat]]

          +

          +![](2025-10-26-21-00-28.png)

          +

          +

          +STMPS 2171 STR == 1A 

          +

          +

          +

          +## ref 

          +

          +- [[power-switch-dat]]

          \ No newline at end of file

				Chip-dat/ST-dat/st-dat.md
			
          @@ -25,6 +25,9 @@ Morse Micro Wi-Fi HaLow == https://www.morsemicro.com/products/

           - [[STM32-clone-dat]]

          +- [[power-switch-dat]]

          +

          +

				Chip-dat/raspberry-pi-dat/RPI-SBC-dat/RPI-HDK-dat/RPI-CM4-dat/RPI-CM4-HDK-dat.md
			
          @@ -0,0 +1,44 @@

          +

          +# RPI-CM4-HDK-dat.md

          +

          +

          +run_PG - GLOBAL_EN

          +

          +- A button between pins 13-14 can be used to wake up compute module from power down

          +- If compute modules is awake RUN_PG will be high so the button doesn't do anything

          +- If the compute module is asleep then RUN_PG will be at 0v and so pull global enable low

          +

          +- [[74xx-dat]] == 74LVC1G07SE-7

          +

          +## nRPIBOOT 

          +

          +Force RPIBOOT = Jumper Pins 1-2 == GND 

          +

          +

          +## EEPROM_WP 

          +

          +EEPROM write protect = Jumper Pins 3-4 == GND 

          +

          +

          +

          +## run_PG

          +

          +- **`RUN_PG`** = Run / Power Good control pin.

          +- Works like the `RUN` pin on regular Raspberry Pis.

          +

          +---

          +

          +## ⚙️ Behavior Table

          +

          +| Pin State            | Meaning                 | Effect                                                    |

          +| -------------------- | ----------------------- | --------------------------------------------------------- |

          +| **High (default)**   | System running normally | CM4 operates normally                                     |

          +| **Low (pulled low)** | Reset request           | Forces a **hard reset** (CPU/GPU stop, power rails reset) |

          +| **Released High**    | Release from reset      | CM4 reboots and starts boot sequence                      |

          +

          +

          +## GLOBAL_EN

          +

          +## ref 

          +

          +- [[RPI-CM4-dat]]

          \ No newline at end of file

				Chip-dat/raspberry-pi-dat/RPI-SBC-dat/RPI-HDK-dat/RPI-CM4-expansion-board-dat/CM4-IO-BASE-B_V4_SchDoc.pdf
			
          Binary files a/Chip-dat/raspberry-pi-dat/RPI-SBC-dat/RPI-HDK-dat/RPI-CM4-expansion-board-dat/CM4-IO-BASE-B_V4_SchDoc.pdf and /dev/null differ

				Chip-dat/raspberry-pi-dat/RPI-SBC-dat/RPI-HDK-dat/RPI-CM4-expansion-board-dat/RPI-CM4-expansion-board-dat.md
			
          @@ -1,7 +1,7 @@

           # RPI-CM4-expansion-board-dat

          -

          +- [[RPI-CM4-dat]] - [[RPI-CM4-HDK-dat]]

           ## use guide 

          @@ -41,9 +41,9 @@ boot mode

           ## hardware 

          -- [[microsd-dat]] - [[RJ45-dat]] - [[USB-hub-dat]] - [[FSUSB42-dat]] - [[mos-n-dat]]

          -

          +- [[microsd-card-holder-dat]] - [[RJ45-dat]] - [[USB-hub-dat]] - [[FSUSB42-dat]] - [[mos-n-dat]]

          +- [[power-switch-dat]]

          @@ -105,12 +105,6 @@ diagram

           - full scale large size image - https://pi4j.com/1.3/images/pi4j-rpi-cm4-header.png

          -### ref 

          -

          -

          -- https://www.raspberrypi.com/products/compute-module-4-io-board/

          -- datasheet https://datasheets.raspberrypi.com/cm4/cm4-datasheet.pdf

          -- kicad file - 

           ## Variation Board 

          @@ -205,4 +199,12 @@ J2

           - [[RPI-CM4-expansion-board]]

          -- official clone - https://oshwlab.com/stateblood/compute-module-4

          \ No newline at end of file

          +- official clone - https://oshwlab.com/stateblood/compute-module-4

          +

          +

          +### ref 

          +

          +

          +- https://www.raspberrypi.com/products/compute-module-4-io-board/

          +- datasheet https://datasheets.raspberrypi.com/cm4/cm4-datasheet.pdf

          +- kicad file -

				Chip-dat/richtek-dat/richtek-dat.md
			
          @@ -15,7 +15,7 @@ The RT9742 integrates an over-current protection circuit, a short fold back circ

           - [[power-protection-dat]]

          -

          +GGJ5 == 1A 

           ## RT9080

				PCB-dat/EDA-dat/kicad-dat/kicad-lib-dat/kicad-symbol-dat.md
			
          @@ -14,6 +14,7 @@

           - Connector 

               - Conn_01x01_Pin

               - USB_C_Plug

          +    - USB_C_Receptacle_USB2.0_16P

               - USB_A == type A plugger == [[USB-A-dat]]

           - Connector_generic_MountingPin

           - Device

				PCB-dat/EDA-dat/kicad-dat/kidcad-workflow-dat/kicad-workflow-dat.md
			
          @@ -7,6 +7,20 @@

           - [[kicad-sch-dat]] -> [[kicad-pcb-dat]]

          +

          +- create root 

          +- Draw Hierarchical Sheets

          +- add sub circuits to sheets 

          +

          +

          +## label 

          +

          +- Hierarchical lable

          +- Global label

          +

          +- Net label

          +- Directive label 

          +

           ## kicad PCB modify 

           example [[RPI-CM4-expansion-board-dat]], we are going to make a new PCB based on the scheamtic 

          @@ -29,4 +43,6 @@ example [[RPI-CM4-expansion-board-dat]], we are going to make a new PCB based on

           - [[PCB-fab-dat]]

          -- [[kicad-workflow]] - [[kicad]]

          \ No newline at end of file

          +- [[kicad-workflow]] - [[kicad]]

          +

          +- [[RPI-CM4-expansion-board-dat]] - [[RPI-CM4-expansion-board]]

          \ No newline at end of file

				Tech-dat/memory-dat/sd-dat/microsd-dat/microsd-card-holder-dat/2025-10-28-18-48-08.png
			
          Binary files /dev/null and b/Tech-dat/memory-dat/sd-dat/microsd-dat/microsd-card-holder-dat/2025-10-28-18-48-08.png differ

				Tech-dat/memory-dat/sd-dat/microsd-dat/microsd-card-holder-dat/microsd-card-holder-dat.md
			
          @@ -2,6 +2,8 @@

           # microsd-card-holder-dat

          +

          +

           ## molex microsd holder 

           - [[molex-dat]]

          @@ -13,10 +15,15 @@

           ![](2025-03-14-18-41-54.png)

          +

          +

          +

           ## microSD 9P w/dect

           ### standard 

          +![](2025-10-28-18-48-08.png)

          +

           ![](2025-03-14-18-52-37.png)

           ### flat 短体 1.5H

				power-dat/power-switch-dat/2023-11-30-15-52-54.png
			
          Binary files a/power-dat/power-switch-dat/2023-11-30-15-52-54.png and /dev/null differ

				power-dat/power-switch-dat/2025-10-26-21-00-28.png
			
          Binary files a/power-dat/power-switch-dat/2025-10-26-21-00-28.png and /dev/null differ

				power-dat/power-switch-dat/power-switch-dat.md
			
          @@ -3,7 +3,9 @@

           power switch and distribution 

          +- [[RT9742-dat]] - [[richtek-dat]]

          +- [[ST-dat]] - [[STMPS21x1-dat]]

           - [[switch-dat]] 

          @@ -34,27 +36,6 @@ The SY6280 develops ultra-low Rds(on) switch with programmable current limiting 

          -### STMPS2151

          -

          -Enhanced single channel power switches

          -

          -https://www.st.com/en/switches-and-multiplexers/stmps2151.html

          -

          -The STMPS2141, STMPS2151, STMPS2161, STMPS2171 power distribution switches are intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. These devices incorporate 90 mΩ N-channel MOSFET high-side power switches for power distribution. These switches are controlled by a logic enable input.

          -

          -All features

          -- 90 mΩ high-side MOSFET switch

          -- 500/1000 mA continuous current

          -- Thermal and short-circuit protection with overcurrent logic output

          -- Operating range from 2.7 to 5.5 V

          -- CMOS and TTL compatible enable input

          -- Undervoltage lockout (UVLO)

          -

          -![](2023-11-30-15-52-54.png)

          -

          -- [[RPI-CM4-expansion-board-dat]]

          -

          -![](2025-10-26-21-00-28.png)

           ### VN750

...	...	@@ -14,6 +14,18 @@
14	14	- [[74xx04-dat]] == Hex Inverter
15	15
16	16
	17	+## 74LVC1G07SE-7
	18	+
	19	+SINGLE BUFFER/DRIVER WITH OPEN DRAIN OUTPUT
	20	+
	21	+```
	22	+Function Table
	23	+Input Output
	24	+A Y
	25	+H Z
	26	+L L
	27	+```
	28	+
17	29	## 74HC165D
18	30
19	31	![](2024-09-20-11-33-37.png)

...	...	@@ -0,0 +1,34 @@
	1	+
	2	+# STMPS21x1-dat
	3	+
	4	+
	5	+### STMPS 2151
	6	+
	7	+Enhanced single channel power switches
	8	+
	9	+https://www.st.com/en/switches-and-multiplexers/stmps2151.html
	10	+
	11	+The STMPS2141, STMPS2151, STMPS2161, STMPS2171 power distribution switches are intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. These devices incorporate 90 mΩ N-channel MOSFET high-side power switches for power distribution. These switches are controlled by a logic enable input.
	12	+
	13	+All features
	14	+- 90 mΩ high-side MOSFET switch
	15	+- 500/1000 mA continuous current
	16	+- Thermal and short-circuit protection with overcurrent logic output
	17	+- Operating range from 2.7 to 5.5 V
	18	+- CMOS and TTL compatible enable input
	19	+- Undervoltage lockout (UVLO)
	20	+
	21	+![](2023-11-30-15-52-54.png)
	22	+
	23	+- [[RPI-CM4-expansion-board-dat]]
	24	+
	25	+![](2025-10-26-21-00-28.png)
	26	+
	27	+
	28	+STMPS 2171 STR == 1A
	29	+
	30	+
	31	+
	32	+## ref
	33	+
	34	+- [[power-switch-dat]]
...	...	\ No newline at end of file

...	...	@@ -25,6 +25,9 @@ Morse Micro Wi-Fi HaLow == https://www.morsemicro.com/products/
25	25	- [[STM32-clone-dat]]
26	26
27	27
	28	+- [[power-switch-dat]]
	29	+
	30	+
28	31
29	32
30	33

...	...	@@ -0,0 +1,44 @@
	1	+
	2	+# RPI-CM4-HDK-dat.md
	3	+
	4	+
	5	+run_PG - GLOBAL_EN
	6	+
	7	+- A button between pins 13-14 can be used to wake up compute module from power down
	8	+- If compute modules is awake RUN_PG will be high so the button doesn't do anything
	9	+- If the compute module is asleep then RUN_PG will be at 0v and so pull global enable low
	10	+
	11	+- [[74xx-dat]] == 74LVC1G07SE-7
	12	+
	13	+## nRPIBOOT
	14	+
	15	+Force RPIBOOT = Jumper Pins 1-2 == GND
	16	+
	17	+
	18	+## EEPROM_WP
	19	+
	20	+EEPROM write protect = Jumper Pins 3-4 == GND
	21	+
	22	+
	23	+
	24	+## run_PG
	25	+
	26	+- `RUN_PG` = Run / Power Good control pin.
	27	+- Works like the `RUN` pin on regular Raspberry Pis.
	28	+
	29	+---
	30	+
	31	+## ⚙️ Behavior Table
	32	+
	33	+\| Pin State \| Meaning \| Effect \|
	34	+\| -------------------- \| ----------------------- \| --------------------------------------------------------- \|
	35	+\| High (default) \| System running normally \| CM4 operates normally \|
	36	+\| Low (pulled low) \| Reset request \| Forces a hard reset (CPU/GPU stop, power rails reset) \|
	37	+\| Released High \| Release from reset \| CM4 reboots and starts boot sequence \|
	38	+
	39	+
	40	+## GLOBAL_EN
	41	+
	42	+## ref
	43	+
	44	+- [[RPI-CM4-dat]]
...	...	\ No newline at end of file

...	...	@@ -1,7 +1,7 @@
1	1
2	2	# RPI-CM4-expansion-board-dat
3	3
4		-
	4	+- [[RPI-CM4-dat]] - [[RPI-CM4-HDK-dat]]
5	5
6	6	## use guide
7	7
...	...	@@ -41,9 +41,9 @@ boot mode
41	41
42	42	## hardware
43	43
44		-- [[microsd-dat]] - [[RJ45-dat]] - [[USB-hub-dat]] - [[FSUSB42-dat]] - [[mos-n-dat]]
45		-
	44	+- [[microsd-card-holder-dat]] - [[RJ45-dat]] - [[USB-hub-dat]] - [[FSUSB42-dat]] - [[mos-n-dat]]
46	45
	46	+- [[power-switch-dat]]
47	47
48	48
49	49
...	...	@@ -105,12 +105,6 @@ diagram
105	105
106	106	- full scale large size image - https://pi4j.com/1.3/images/pi4j-rpi-cm4-header.png
107	107
108		-### ref
109		-
110		-
111		-- https://www.raspberrypi.com/products/compute-module-4-io-board/
112		-- datasheet https://datasheets.raspberrypi.com/cm4/cm4-datasheet.pdf
113		-- kicad file -
114	108
115	109
116	110	## Variation Board
...	...	@@ -205,4 +199,12 @@ J2
205	199
206	200	- [[RPI-CM4-expansion-board]]
207	201
208		-- official clone - https://oshwlab.com/stateblood/compute-module-4
...	...	\ No newline at end of file
	0	+- official clone - https://oshwlab.com/stateblood/compute-module-4
	1	+
	2	+
	3	+### ref
	4	+
	5	+
	6	+- https://www.raspberrypi.com/products/compute-module-4-io-board/
	7	+- datasheet https://datasheets.raspberrypi.com/cm4/cm4-datasheet.pdf
	8	+- kicad file -

...	...	@@ -15,7 +15,7 @@ The RT9742 integrates an over-current protection circuit, a short fold back circ
15	15
16	16	- [[power-protection-dat]]
17	17
18		-
	18	+GGJ5 == 1A
19	19
20	20
21	21	## RT9080

...	...	@@ -14,6 +14,7 @@
14	14	- Connector
15	15	- Conn_01x01_Pin
16	16	- USB_C_Plug
	17	+ - USB_C_Receptacle_USB2.0_16P
17	18	- USB_A == type A plugger == [[USB-A-dat]]
18	19	- Connector_generic_MountingPin
19	20	- Device

...	...	@@ -7,6 +7,20 @@
7	7	- [[kicad-sch-dat]] -> [[kicad-pcb-dat]]
8	8
9	9
	10	+
	11	+- create root
	12	+- Draw Hierarchical Sheets
	13	+- add sub circuits to sheets
	14	+
	15	+
	16	+## label
	17	+
	18	+- Hierarchical lable
	19	+- Global label
	20	+
	21	+- Net label
	22	+- Directive label
	23	+
10	24	## kicad PCB modify
11	25
12	26	example [[RPI-CM4-expansion-board-dat]], we are going to make a new PCB based on the scheamtic
...	...	@@ -29,4 +43,6 @@ example [[RPI-CM4-expansion-board-dat]], we are going to make a new PCB based on
29	43
30	44	- [[PCB-fab-dat]]
31	45
32		-- [[kicad-workflow]] - [[kicad]]
...	...	\ No newline at end of file
	0	+- [[kicad-workflow]] - [[kicad]]
	1	+
	2	+- [[RPI-CM4-expansion-board-dat]] - [[RPI-CM4-expansion-board]]
...	...	\ No newline at end of file

...	...	@@ -2,6 +2,8 @@
2	2	# microsd-card-holder-dat
3	3
4	4
	5	+
	6	+
5	7	## molex microsd holder
6	8
7	9	- [[molex-dat]]
...	...	@@ -13,10 +15,15 @@
13	15
14	16	![](2025-03-14-18-41-54.png)
15	17
	18	+
	19	+
	20	+
16	21	## microSD 9P w/dect
17	22
18	23	### standard
19	24
	25	+![](2025-10-28-18-48-08.png)
	26	+
20	27	![](2025-03-14-18-52-37.png)
21	28
22	29	### flat 短体 1.5H

...	...	@@ -3,7 +3,9 @@
3	3
4	4	power switch and distribution
5	5
	6	+- [[RT9742-dat]] - [[richtek-dat]]
6	7
	8	+- [[ST-dat]] - [[STMPS21x1-dat]]
7	9
8	10	- [[switch-dat]]
9	11
...	...	@@ -34,27 +36,6 @@ The SY6280 develops ultra-low Rds(on) switch with programmable current limiting
34	36
35	37
36	38
37		-### STMPS2151
38		-
39		-Enhanced single channel power switches
40		-
41		-https://www.st.com/en/switches-and-multiplexers/stmps2151.html
42		-
43		-The STMPS2141, STMPS2151, STMPS2161, STMPS2171 power distribution switches are intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. These devices incorporate 90 mΩ N-channel MOSFET high-side power switches for power distribution. These switches are controlled by a logic enable input.
44		-
45		-All features
46		-- 90 mΩ high-side MOSFET switch
47		-- 500/1000 mA continuous current
48		-- Thermal and short-circuit protection with overcurrent logic output
49		-- Operating range from 2.7 to 5.5 V
50		-- CMOS and TTL compatible enable input
51		-- Undervoltage lockout (UVLO)
52		-
53		-![](2023-11-30-15-52-54.png)
54		-
55		-- [[RPI-CM4-expansion-board-dat]]
56		-
57		-![](2025-10-26-21-00-28.png)
58	39
59	40	### VN750
60	41