I/O USB - Revision history

Admin at 20:09, 10 October 2021

2021-10-10T20:09:52Z

Admin: /* Balthazar I/O USB board */

2021-02-02T18:11:32Z

Balthazar I/O USB board

Admin: /* BalthazarPSU2 + I/O unifying board */

2020-12-22T17:55:33Z

BalthazarPSU2 + I/O unifying board

Admin: /* BalthazarPSU2 + I/O unifying board */

2020-12-22T11:47:09Z

BalthazarPSU2 + I/O unifying board

Admin: /* Balthazar I/O USB board */

2020-12-22T11:40:16Z

Balthazar I/O USB board

Admin at 11:12, 17 November 2020

2020-11-17T11:12:15Z

Admin: /* Balthazar I/O USB board */

2020-11-11T11:56:56Z

Balthazar I/O USB board

Admin: /* Balthazar I/O USB board */

2020-05-24T10:34:43Z

Balthazar I/O USB board

Admin: /* Balthazar I/O USB board */

2020-05-24T10:34:09Z

Balthazar I/O USB board

Admin: /* Balthazar I/O USB board */

2020-05-19T16:31:23Z

Balthazar I/O USB board

@@ Line 2: / Line 2: @@
-IO-board basically means connectivity with peripheral devices. These can be seen as on-board and out-board. On-board devices include: keyboard + trackpad, webcam and optional audio-card. USB is the usual solution for this. Here for the on-board periphery a simple USB 2.0 hub is enough. Main mini-computer board usually provides a much better hub for 4 downstream USB devices.
+IO-board means connectivity with peripheral devices. These can be seen as on-board and out-board. On-board devices include keyboard + trackpad, webcam, and optional audio card. USB is the usual solution for this. Here for the onboard periphery, a simple USB 2.0 hub is enough. The main mini-computer board usually provides a much better hub for 4 downstream USB devices.
-At this point this is still mainly USB 2.0. Of course, some type of mass storage / system disk would be needed: microSD – and especially versions of SSD (SATA or PCIe) – directly or via USB adapter.
+At this point, this is still mainly USB 2.0. Of course, some type of mass storage/system disk would be needed: microSD – and especially versions of SSD (SATA or PCIe) – directly or via USB adapter.
-This would benefit a faster USB port – USB3.x (part of the mini-computer system-on-chip) – or PCIE bus.
+This would benefit a faster USB port – USB3.x (part of the mini-computer system-on-chip) – or PCIe bus.
 '''Our solution for internal hub:'''
 We chose the GL850G (ssop28-pin) four-port USB 2.0 hub chip with additional two pieces of  AIC1526-0 dual USB high-side switch – to switch-off/on manually.  It is a well-proven design. Hub will be powered via the upstream port – connected to the mini-computer board. Internal USB periphery power demands are predictable = low, so the usual 500mA limit for the hub is ok.
-The keyboard + touchpad combination is USB1.1 protocol, webcam and optional audiocard are USB2.0.
+The keyboard + touchpad combination is USB1.1 protocol, webcam, and optional audio card are USB2.0.
 [[File:SchemeUSB.png|thumb|center]]
-Internal USB devices can be switched of manually. This helps with the privacy – the microphone and webcam. For external USB devices disabling the USB power line is the same as unplugging the USB device. The "condom" approach with disabling the data lines is a bit better, but solves things mostly with USB plugging into public charging stations. The TPS2540 solution is USB charging current negotiator – with no datalines connected. A dedicated (micro-USB) charging port solves this problem.
+Internal USB devices can be switched off manually. This helps with the privacy – the microphone and webcam. For external USB devices disabling the USB power line is the same as unplugging the USB device. The "condom" approach with disabling the data lines is a bit better but solves things mostly with USB plugging into public charging stations. The TPS2540 solution is a USB charging current negotiator – with no data lines connected. A dedicated (micro-USB) charging port solves this problem.
 The already developed Balthazar PSU-charger has this option.
@@ Line 27: / Line 27: @@
 PCB is ready for a prototype as KiCad files are available at our [https://github.com/balthazar-space Github] pages.
-Those will be regularly updated as schematics and PCBs are continuously improved and optimised.
+Those will be regularly updated as schematics and PCBs are continuously improved and optimized.
 === BalthazarPSU2 + I/O unifying board ===
@@ Line 38: / Line 38: @@
 </gallery>
-In a top view with first chip on the left is a Texas Instruments BQ24193 that acts as a buck-boost converter/ battery charger,
+In a top view with the first chip on the left is a Texas Instruments BQ24193 that acts as a buck-boost converter/ battery charger,
 another chip is a Texas Instruments TPS63020 for an internal power acting as buck-boost converters (for 3.3V and 5V)
-Onboard is also Diodes Incorporated PAM8403 enabling 3W class-D audio amplifier while Microchip USB2514 is used as a USB 2.0 four port hub.
+Onboard is also Diodes Incorporated PAM8403 enabling 3W class-D audio amplifier while Microchip USB2514 is used as a USB 2.0 four-port hub.
-For more on schematics, elements, bill of materials visit our [https://github.com/balthazar-space/balthazarPSU2 Github] page.
+For more on schematics, elements, bills of materials visit our [https://github.com/balthazar-space/balthazarPSU2 Github] page.
   Go to:
   [[Keyboard|Keyboard]] or [[Power_Supply|Power Supply]]

@@ Line 20: / Line 20: @@
 File:BalthazarIOusb 2.png|thumb|side
 File:BalthazarIOusb 1.png|thumb|bottom
 </gallery>

@@ Line 39: / Line 39: @@
 another chip is a Texas Instruments TPS63020 for an internal power acting as buck-boost converters (for 3.3V and 5V)
 Onboard is also Diodes Incorporated PAM8403 enabling 3W class-D audio amplifier while Microchip USB2514 is used as a USB 2.0 four port hub.
   Go to:
   [[Keyboard|Keyboard]] or [[Power_Supply|Power Supply]]

@@ Line 36: / Line 36: @@
 </gallery>
-With first chip from the left is a Texas Instruments BQ24193 acts as a buck-boost converter/ battery charger
+In a top view with first chip on the left is a Texas Instruments BQ24193 that acts as a buck-boost converter/ battery charger,
-another chip is a Texas Instruments TPS63020 for internal power acting as buck-boost converters (for 3.3V and 5V)
+another chip is a Texas Instruments TPS63020 for an internal power acting as buck-boost converters (for 3.3V and 5V)
 Onboard is also Diodes Incorporated PAM8403 enabling 3W class-D audio amplifier while Microchip USB2514 is used as a USB 2.0 four port hub.
   Go to:
   [[Keyboard|Keyboard]] or [[Power_Supply|Power Supply]]

@@ Line 26: / Line 26: @@
 Those will be regularly updated as schematics and PCBs are continuously improved and optimised.
   Go to:
   [[Keyboard|Keyboard]] or [[Power_Supply|Power Supply]]

← Older revision		Revision as of 11:12, 17 November 2020
Line 26:		Line 26:

	Those will be regularly updated as schematics and PCBs are continuously improved and optimised.		Those will be regularly updated as schematics and PCBs are continuously improved and optimised.
		+
		+	Go to:
		+	[[Keyboard\|Keyboard]] or [[Power_Supply\|Power Supply]]

@@ Line 16: / Line 16: @@
 The already developed Balthazar PSU-charger has this option.
-[[File:BalthazarIOusb 0.png|thumb|center]]
+<gallery>
+File:BalthazarIOusb 0.png|thumb|top
-[[File:BalthazarIOusb 2.png|thumb|center]]
+File:BalthazarIOusb 2.png|thumb|side
+File:BalthazarIOusb 1.png|thumb|bottom
-[[File:BalthazarIOusb 1.png|thumb|center]]
+</gallery>

← Older revision		Revision as of 10:34, 24 May 2020
Line 25:		Line 25:

	PCB is ready for a prototype as KiCad files are available at our [https://github.com/balthazar-space Github] pages.		PCB is ready for a prototype as KiCad files are available at our [https://github.com/balthazar-space Github] pages.
		+
	Those will be regularly updated as schematics and PCBs are continuously improved and optimised.		Those will be regularly updated as schematics and PCBs are continuously improved and optimised.

← Older revision		Revision as of 10:34, 24 May 2020
Line 24:		Line 24:


−	PCB ready for prototype as KiCad files are available at our [https://github.com/balthazar-space Github] pages.	+	PCB is ready for a prototype as KiCad files are available at our [https://github.com/balthazar-space Github] pages.
		+	Those will be regularly updated as schematics and PCBs are continuously improved and optimised.

← Older revision		Revision as of 16:31, 19 May 2020
Line 24:		Line 24:


−	PCB ready for prototype as KiCad files are available at our [https://github.com/balthazar-space~~/balhazar~~ Github] pages.	+	PCB ready for prototype as KiCad files are available at our [https://github.com/balthazar-space Github] pages.