AP6256 Asset Audit

K

klerne

flux

AP6256 asset physical audit only
Audit this exact published AP6256 47-pin asset against its stored AMPAK datasheet V1.3 https://dl.radxa.com/rockpi4/docs/hw/datasheets/AP6256%20datasheet_V1.3_12202017.pdf . Need full terminal-pad binding, footprint land centers/dimensions vs datasheet, NC test pads, pin aliases29_SDIO_VSEL_I and TP1 numbering. No edits to publisher asset and no board mutation. Return whether usable as-is for schematic checkpoint and what prevents manufacturing. All electrical types reportedly Unspecified; do not claim meaningful ERC from that. Find exact 37.4MHz external crystal requirement/reference and VIN_LDO_OUT21 to VIN_LDO23 connection and decoupling if stored reference documents resolve them. Reference ROC-RK3566-PC-V10 https://personalbsd.org/download/Documents/SCH/ROC-RK3566-PC-V10-20210419.pdf page36 uses AP6256; confirm pinout not blindly same symbol aliases. Budget bounded, return evidence and precise blockers.

flux

I’ll compare the published AP6256 terminal bindings and footprint with the AMPAK drawing and reference schematic, without changing the asset or any board.

flux

Conditionally usable for schematic capture, but not manufacturing-qualified. All 47 terminal–pad bindings were inspected; pin 29 maps correctly, while TP1–TP3 use literal IDs rather than datasheet numbers 45–47, and all electrical types remain Unspecified—so meaningful ERC assurance is unavailable.
The full audit and binding table records the footprint’s discrepancy with AMPAK assembly-pad guidance and unresolved drawing coordinates; the ROC reference confirms 37.4 MHz on page 33, not page 36, but its readable evidence does not establish crystal specifications or the pin 21–23 link/decoupling. No asset or board changes were made; I filed a part-quality ticket for Flux team review.
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Files

Pins

Symbol

Layout

3D View

NC_1
Pin Number
4
GND_1
Pin Number
1
WL_BT_ANT
Pin Number
2
GND_2
Pin Number
3
Name
Pin #
Type
Section
Pin Group
Orientation
Order
Sub-symbol
GND_1
1
Unspecified
Ground
Bottom
42
WL_BT_ANT
2
Unspecified
Communication
Left
5
GND_2
3
Unspecified
Ground
Bottom
43
NC_1
4
Unspecified
No Connect
Left
21
NC_2
5
Unspecified
No Connect
Left
22
BT_WAKE
6
Unspecified
Control
Left
10
BT_HOST_WAKE
7
Unspecified
Control
Right
26
NC_3
8
Unspecified
No Connect
Left
23
VBAT
9
Unspecified
Power
Top
1
XTAL_IN
10
Unspecified
Clock
Left
6
XTAL_OUT
11
Unspecified
Clock
Right
24
WL_REG_ON
12
Unspecified
Control
Left
8
WL_HOST_WAKE
13
Unspecified
Control
Right
25
SDIO_DATA_2
14
Unspecified
Communication
Left
15
SDIO_DATA_3
15
Unspecified
Communication
Left
16
SDIO_DATA_CMD
16
Unspecified
Communication
Left
12
SDIO_DATA_CLK
17
Unspecified
Communication
Left
11
SDIO_DATA_0
18
Unspecified
Communication
Left
13
SDIO_DATA_1
19
Unspecified
Communication
Left
14
GND_3
20
Unspecified
Ground
Bottom
44
VIN_LDO_OUT
21
Unspecified
Power
Top
3
VDDIO
22
Unspecified
Power
Top
4
VIN_LDO
23
Unspecified
Power
Top
2

AP6256