Difference between revisions of "Testpads"
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| 11 || ?? || || 0-1.8V || || || | | 11 || ?? || || 0-1.8V || || || | ||
| + | |} | ||
| + | |||
| + | === Cluster D === | ||
| + | |||
| + | {| class=wikitable | ||
| + | ! Pad # || Name || Type || Levels || Continuity || Frequency || Comment | ||
| + | |- | ||
| + | | 4 || Wire Red || || || || || Speaker left | ||
| + | |- | ||
| + | | 5 || Wire Black || || || || || Speaker left | ||
|} | |} | ||
| Line 90: | Line 100: | ||
! Pad # || Name || Type || Levels || Continuity || Frequency || Comment | ! Pad # || Name || Type || Levels || Continuity || Frequency || Comment | ||
|- | |- | ||
| − | | 9 || | + | | 9 || RCM_EN || || || || || RCM strap to connect GND |
|} | |} | ||
Revision as of 00:25, 2 August 2018
The Nintendo Switch mainboard has a series of testpads on the front and back, presumably used in factory test, diagnostics, and early board bringup procedures.
Contents
Raw Logic captures
These are reference materials, taken from poking at I/O on various testpads. https://github.com/hedgeberg/Switch-Logic-Captures
Photos
Pinouts
Cluster A
| Pad # | Name | Type | Levels | Continuity | Frequency | Comment |
|---|---|---|---|---|---|---|
| 1 | Batt GND? | |||||
| 2 | Battery pulse? | Pulse train | 0-3.3V | L-5? | ||
| 3 | Battery Vdd | |||||
| 4 | ?? | Square wave | 0-3.3V | 329kHz? (undersampled?) | Square wave when screen on, but looks like vias to Speaker R | |
| 5 | ?? | Square wave | 0-3.3V | 329kHz? (undersampled?) | Square wave when screen on, but looks like vias to Speaker R | |
| 6 | Weak GND? | |||||
| 7 | SDA | I2C | 0-1.8V | |||
| 8 | SCL | I2C | 0-1.8V | |||
| 9 | USB-PWR-WAVE? | Square wave | 0-3.3V | K-4, K-5? | ~11 Hz | |
| 10 | USB-PWR-WAVE? | Square wave | 0-3.3V | K-4, K-5? | ~11 Hz |
Cluster B
| Pad # | Name | Type | Levels | Continuity | Frequency | Comment |
|---|---|---|---|---|---|---|
| 2 | D+ | USB-C | Cluster B - 3 | |||
| 3 | D- | USB-C | Cluster B - 2 |
Cluster C
| Pad # | Name | Type | Levels | Continuity | Frequency | Comment |
|---|---|---|---|---|---|---|
| 1 | ?? | 0-1.8V | No clue. This is definitely important, we just have no idea how. May need to interface with dock for comms. | |||
| 2 | UART-A RX | 0-1.8V | ||||
| 3 | UART-A TX | 0-1.8V | ||||
| 4 | ?? | 0-1.8V | ||||
| 5 | ?? | 0-1.8V | ||||
| 6 | ?? | 0-1.8V | ||||
| 7 | ?? | 0-1.8V | ||||
| 8 | ?? | 0-1.8V | ||||
| 9 | ?? | 0-1.8V | ||||
| 10 | ?? | 0-1.8V | ||||
| 11 | ?? | 0-1.8V |
Cluster D
| Pad # | Name | Type | Levels | Continuity | Frequency | Comment |
|---|---|---|---|---|---|---|
| 4 | Wire Red | Speaker left | ||||
| 5 | Wire Black | Speaker left |
Cluster E
| Pad # | Name | Type | Levels | Continuity | Frequency | Comment |
|---|---|---|---|---|---|---|
| 10 | Reset |
Cluster G
| Pad # | Name | Type | Levels | Continuity | Frequency | Comment |
|---|---|---|---|---|---|---|
| 9 | RCM_EN | RCM strap to connect GND |
Cluster I
| Pad # | Name | Type | Levels | Continuity | Frequency | Comment |
|---|---|---|---|---|---|---|
| 1 | GND | |||||
| 2 | Screen_on | On/Off | 0-1.8V | Screen power state, active high | ||
| 3 | UART | 0-1.8V | 1.5MBaud? | |||
| 4 | UART | 0-1.8V | 1.5MBaud? | |||
| 5 | Flow control | 0-1.8V | Flow control for pad I-4? | |||
| 6 | 0-1.8V | Needs testing with chip/touch screen interface board plugged in |
Cluster J
| Pad # | Name | Type | Levels | Continuity | Frequency | Comment |
|---|---|---|---|---|---|---|
| 1 | ? | Edge | 0-1.8V | Turns on around same time as pad J-3 | ||
| 2 | GND | |||||
| 3 | ? | Edge | 0-1.8V | Turns on around same time as pad J-1, slightly after | ||
| 4 | Power button | Pushbutton | 4V-0V | Active low | ||
| 5 | ? | Constant? | 0V | Ground?-NT | ||
| 6 | ? | Edge | 0-1.8V | Turns on with pad J-6, ~1s after J-1/J-3 | ||
| 7 | ? | Edge | 0-1.8V | Turns on with pad J-5, ~1s after J-1/J-3 | ||
| 8 | ? | Edge? | 0-1.8V | Turns on ~1s after J-6/J-7, turns off at unknown point |
Cluster K
| Pad # | Name | Type | Levels | Continuity | Frequency | Comment |
|---|---|---|---|---|---|---|
| 1 | GND | |||||
| 2 | D- | USB-C | Cluster B - 3 | |||
| 3 | D+ | USB-C | Cluster B - 2 | |||
| 4 | USB-PWR-WAVE? | Square wave | 0V-3.3V | A-9, A-10? | ~11 Hz | |
| 5 | USB-PWR-WAVE? | Square wave | 0V-3.3V | A-9, A-10? | ~11 Hz | Appears to mirror K4. Duty cycle 66.67%. Low on screen lock. Off until first interaction. |
| 6 | USB-C V+ | Supply power | ||||
| 7 | Unknown | Power supply? | ~3V-0V | None known | N/A | 0 when usb-c not plugged in, falls slowly on first interaction if USB-C plugged in. Power draw related? |
Cluster L
TODO: Update diagram
| Pad # | Name | Type | Levels | Continuity | Frequency | Comment |
|---|---|---|---|---|---|---|
| 1 | Li-Ion Batt Vdd Mirror | Power Supply | Std. Li-Ion | |||
| 2 | GND | |||||
| 3 | Li-Ion Batt Vdd | Battery Input | Std. Li-Ion | |||
| 4 | Mirrored Ground? | Holds steady @ 0, looks like a decoupled isolated ground | ||||
| 5 | Battery pulse? | <1 Hz | Duty cycle ~0% | |||
| 6 | GND |
