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→UTL-CPU-01 testpoints: TP8x/9x
| SPI chip select 2 ([[NVRAM]])
| SPI chip select 2 ([[NVRAM]])
|-
|-
! scope="row" colspan="4" | <work in progress>
| TP80
| SCL
| 1V8
| TWL bus
|-
! scope="row" colspan="4" (TP81 doesn't exist)
|-
| TP82
| SDA
| 1V8
| TWL bus
|-
| TP83
| PENIRQ
| 1V8? 3V3?
| touchscreen pen down
|-
| TP84
| R7
| 1V8?
| hinge magnet detect signal (active-low)
|-
| TP85
| RESET
| 3V3, but use as open drain/collector
| CPU-TWL reset signal
|-
| TP86
| P05
| 3V3?
| dpad left button
|-
| TP87
| P04
| 3V3?
| dpad right button
|-
| TP88
| P03
| 3V3?
| start button
|-
| TP89
| P02
| 3V3?
| select button
|-
| TP90
| P01
| 3V3?
| B button
|-
| TP91
| P00
| 3V3?
| A button
|-
| TP92
| PM_SLP
| ?
| ?
|-
| TP93
| VCNT5
| ?
| ?
|-
| TP94
| ?
| ?
| ?
|-
| TP95
| R01
| ?
| Y button
|-
| TP96
| R00
| ?
| X button
|-
| TP97
| P09
| 3V3
| shoulder-L button
|-
|-
| TP98
| TP98
| 3V3
| 3V3
| shoulder-R button
| shoulder-R button
|-
| TP99
| MUTE
| 3V3
| ?
|-
|-
! scope="row" colspan="4" | <work in progress>
! scope="row" colspan="4" | <work in progress>