Barkley: Difference between revisions

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Barkley is the PS Vita Motion Sensor accelerometer IC. It is a chip connected to [[Kermit]] via SPI.
Barkley is the codename of the PS Vita Motion Sensor. It is also referred as "Motion" in the System Software SDK.
 
The ''Barkley'' name most likely refers to the microcontroller, but could also designate the whole sensing subsystem.
 
== Hardware ==
 
The motion sensing subsystem is made of four components:
* microcontroller
** communicates with Kermit via ?SPI?
** manages and samples the sensors
* accelerometer
* gyroscope
* compass
 
=== DEM-3000H ===
 
* Microcontroller: [https://www.st.com/en/microcontrollers-microprocessors/stm32f100r8.html STMicroelectronics STM32F100R8H6B]
* Accelerometer: Kionix KXTC9 (three-axis MEMS accelerometer IC)
* Gyroscope: ?
* Compass: ?
 
There are two ICs near the microcontroller with the following markings:
 
  PR4100
  2029
  KGMBF
 
?Gyroscope? from unknown manufacturer
 
    0C9
    Y31
<QR-Code>
 
?Compass? from unknown manufacturer
 
Note: Both unknown ICs use a font on the package that looks like the STMicroelectronics font
 
=== PCH-1xxx ===
 
* Microcontroller: STMicroelectronics 'STM32P10SoE'
** Undocumented variant of the STM32F100
*** ''Features to be documented''
* Accelerometer: Kionix KXTC9
** Outputs analog data sampled by Barkley
* Gyroscope: ?
* Compass: Asahi KASEI AK8975C
** Connected to Barkley via I²C (7-bit slave address: 0x0C)
 
An IC with the following markings is found next to the KXTC9 and could be the gyroscope:
 
  3GA51H
  2141
  QT1AU
 
It has the same form factor and footprint as the PR4100 from DEM-3000H.
 
==== Pinouts ====
 
The STM32P10SoE ballout appears to be identical to the STM32F100xx value line:
 
[[File:STM32F100xx Value Line TFBGA64 ballout.png|500px]]
 
{| class="wikitable mw-collapsible mw-collapsed" style="width:100%"
|+ STM32P10SoE ball mapping
|-
! Ball !! Type !! Description
|-
| A1 || - || <abbr title="Not Connected">N/C</abbr>
|-
| A2 || - || <abbr title="Not Connected">N/C</abbr>
|-
| A3 || - || <abbr title="Not Connected">N/C</abbr>
|-
| A4 || - || <abbr title="Not Connected">N/C</abbr>
|-
| A5 || - || <abbr title="Not Connected">N/C</abbr>
|-
| A6 || - || <abbr title="Not Connected">N/C</abbr>
|-
| A7 || - || <abbr title="Not Connected">N/C</abbr>
|-
| A8 || - || <abbr title="Not Connected">N/C</abbr>
|-
| B1 || - || <abbr title="Not Connected">N/C</abbr>
|-
| B2 || PWR || VBAT
|-
| B3 || I || AK8975 DRDY interrupt
|-
| B4 || I || BOOT0 (tied to GND?)
|-
| B5 || ? || Kermit E25
|-
| B6 || - || <abbr title="Not Connected">N/C</abbr>
|-
| B7 || ? || Pulled-down via a resistor near STM32P10SoE. Pull up to do something?
|-
| B8 || - || <abbr title="Not Connected">N/C</abbr>
|-
| C1 || I || OSC_IN - Oscillator Input
|-
| C2 || PWR || VSS_4
|-
| C3 || I/O || AK8975 I²C data
|-
| C4 || - || <abbr title="Not Connected">N/C</abbr>
|-
| C5 || - || <abbr title="Not Connected">N/C</abbr>
|-
| C6 || ? || Serial input (115200 8N1) - exposed via test point near Ernie shield
|-
| C7 || ? || Serial output (115200 8N1) - exposed via test point near Ernie shield
|-
| C8 || - || <abbr title="Not Connected">N/C</abbr>
|-
| D1 || O || OSC_OUT - Oscillator Output
|-
| D2 || PWR || VDD_4
|-
| D3 || O || AK8975 I²C clock
|-
| D4 || PWR || VSS_3
|-
| D5 || PWR || VSS_2
|-
| D6 || PWR || VSS_1
|-
| D7 || - || <abbr title="Not Connected">N/C</abbr>
|-
| D8 || ? || 3GA51H pin 25
|-
| E1 || I || nRST (Ernie J4)
|-
| E2 || - || <abbr title="Not Connected">N/C</abbr>
|-
| E3 || ? || ?
|-
| E4 || PWR || VDD_3
|-
| E5 || PWR || VDD_2
|-
| E6 || PWR || VDD_1
|-
| E7 || - || <abbr title="Not Connected">N/C</abbr>
|-
| E8 || - || 3GA51H pin 23
|-
| F1 || PWR || VSSA (Analog domain)
|-
| F2 || I || KXTC9 pin 6 (X-axis)
|-
| F3 || ? || ?
|-
| F4 || ? || ?
|-
| F5 || ? || 3GA51H pin 7
|-
| F6 || ? || Kermit A26
|-
| F7 || I || Kermit SPI1 MOSI (Kermit Z12)
|-
| F8 || O || Kermit SPI1 MISO (Kermit AA13)
|-
| G1 || PWR || VREF+ (ADC reference voltage)
|-
| G2 || ? || ?
|-
| G3 || - || <abbr title="Not Connected">N/C</abbr>
|-
| G4 || I || KXTC9 pin 8 (Z-axis)
|-
| G5 || ? || 3GA51H pin 1
|-
| G6 || I || PB2/BOOT1 - tied to GND
|-
| G7 || - || <abbr title="Not Connected">N/C</abbr>
|-
| G8 || I || Kermit SPI1 clock (Kermit Z13)
|-
| H1 || PWR || VDDA (Analog domain)
|-
| H2 || ? || Connected to a 3-pin IC near GC slot
|-
| H3 || ? || Exposed via test point near Ernie shield
|-
| H4 || ? || 3GA51H pin 5
|-
| H5 || I || KXTC9 pin 7 (Y-axis)
|-
| H6 || ? || 3GA51 pin 3
|-
| H7 || - || <abbr title="Not Connected">N/C</abbr>
|-
| H8 || I || Kermit SPI1 chip select (Kermit AA12)
|-
|}
 
The 3GA51H IC is linked only to the STM32P10SoE - all other pins are used for power or left unconnected.
 
=== USS-1001 ===
 
* Microcontroller: ?
* Accelerometer: ?
* Gyroscope: ?
* Compass: Alps Alpine ''40108D''


[[Category:Devices]]
[[Category:Devices]]

Latest revision as of 22:44, 12 November 2024

Barkley is the codename of the PS Vita Motion Sensor. It is also referred as "Motion" in the System Software SDK.

The Barkley name most likely refers to the microcontroller, but could also designate the whole sensing subsystem.

Hardware

The motion sensing subsystem is made of four components:

  • microcontroller
    • communicates with Kermit via ?SPI?
    • manages and samples the sensors
  • accelerometer
  • gyroscope
  • compass

DEM-3000H

There are two ICs near the microcontroller with the following markings: 

 PR4100
  2029
 KGMBF

?Gyroscope? from unknown manufacturer 

   0C9
   Y31
<QR-Code>

?Compass? from unknown manufacturer

Note: Both unknown ICs use a font on the package that looks like the STMicroelectronics font

PCH-1xxx

  • Microcontroller: STMicroelectronics 'STM32P10SoE'
    • Undocumented variant of the STM32F100
      • Features to be documented
  • Accelerometer: Kionix KXTC9
    • Outputs analog data sampled by Barkley
  • Gyroscope: ?
  • Compass: Asahi KASEI AK8975C
    • Connected to Barkley via I²C (7-bit slave address: 0x0C)

An IC with the following markings is found next to the KXTC9 and could be the gyroscope: 

 3GA51H
  2141
 QT1AU

It has the same form factor and footprint as the PR4100 from DEM-3000H.

Pinouts

The STM32P10SoE ballout appears to be identical to the STM32F100xx value line:

STM32F100xx Value Line TFBGA64 ballout.png

STM32P10SoE ball mapping
Ball Type Description
A1 - N/C
A2 - N/C
A3 - N/C
A4 - N/C
A5 - N/C
A6 - N/C
A7 - N/C
A8 - N/C
B1 - N/C
B2 PWR VBAT
B3 I AK8975 DRDY interrupt
B4 I BOOT0 (tied to GND?)
B5 ? Kermit E25
B6 - N/C
B7 ? Pulled-down via a resistor near STM32P10SoE. Pull up to do something?
B8 - N/C
C1 I OSC_IN - Oscillator Input
C2 PWR VSS_4
C3 I/O AK8975 I²C data
C4 - N/C
C5 - N/C
C6 ? Serial input (115200 8N1) - exposed via test point near Ernie shield
C7 ? Serial output (115200 8N1) - exposed via test point near Ernie shield
C8 - N/C
D1 O OSC_OUT - Oscillator Output
D2 PWR VDD_4
D3 O AK8975 I²C clock
D4 PWR VSS_3
D5 PWR VSS_2
D6 PWR VSS_1
D7 - N/C
D8 ? 3GA51H pin 25
E1 I nRST (Ernie J4)
E2 - N/C
E3 ? ?
E4 PWR VDD_3
E5 PWR VDD_2
E6 PWR VDD_1
E7 - N/C
E8 - 3GA51H pin 23
F1 PWR VSSA (Analog domain)
F2 I KXTC9 pin 6 (X-axis)
F3 ? ?
F4 ? ?
F5 ? 3GA51H pin 7
F6 ? Kermit A26
F7 I Kermit SPI1 MOSI (Kermit Z12)
F8 O Kermit SPI1 MISO (Kermit AA13)
G1 PWR VREF+ (ADC reference voltage)
G2 ? ?
G3 - N/C
G4 I KXTC9 pin 8 (Z-axis)
G5 ? 3GA51H pin 1
G6 I PB2/BOOT1 - tied to GND
G7 - N/C
G8 I Kermit SPI1 clock (Kermit Z13)
H1 PWR VDDA (Analog domain)
H2 ? Connected to a 3-pin IC near GC slot
H3 ? Exposed via test point near Ernie shield
H4 ? 3GA51H pin 5
H5 I KXTC9 pin 7 (Y-axis)
H6 ? 3GA51 pin 3
H7 - N/C
H8 I Kermit SPI1 chip select (Kermit AA12)

The 3GA51H IC is linked only to the STM32P10SoE - all other pins are used for power or left unconnected.

USS-1001

  • Microcontroller: ?
  • Accelerometer: ?
  • Gyroscope: ?
  • Compass: Alps Alpine 40108D
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