Part Audit Review


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Part Audit Report

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Part Audit Report Scope
Audit of RTL8812AU-CG project metadata, 77-terminal schematic symbol, QFN footprint, and stored datasheet against Realtek RTL8812AU-CG Datasheet Rev. 0.2 (24 May 2011, Track ID JATR-2265-11).
Existing Part Information
The available Realtek PDF is marked “CONFIDENTIAL: Development Partners Only”; public copies are hosted by third parties. The stored document text identifies Realtek Semiconductor Corp. and the correct MPN/revision.
Key Datasheet Specifications
  • Highly integrated dual-band IEEE 802.11a/b/g/n/ac Draft 2.0 WLAN controller.
  • 2T2R / 2×2 MIMO, two spatial streams.
  • USB 2.0/3.0 host interface; USB 3.0 SuperSpeed TX and RX differential pairs plu...
Audit complete. The datasheet URL was already populated, so no property update was needed; however, I found a critical pin mapping error: pins 41–43 are incorrectly assigned as GND/HSDP/HSDM instead of HSDP/HSDM/GND. Pin 50 is also mislabeled, all pin types/descriptions are missing, and the exposed-pad paste geometry needs manufacturing review.
Full specifications and findings are in the Part Audit Report. I also filed an internal part-quality report with the Flux engineering team.
Yes, correct the pin mapping, pin types, descriptions, metadata, and exposed-pad paste strategy.
I’ll correct the symbol’s pin assignments and metadata from the datasheet, then revise the exposed-pad paste into a segmented manufacturable pattern and verify the resulting symbol and footprint.
The symbol and metadata corrections are in place. The footprint API cannot safely create independent paste-only windows, so I preserved the exposed-pad copper and applied a centered paste reduction giving about 60.5% coverage; I’m now performing the final read-back verification.
Corrected the pin 41–43 mapping, pin 50 label, all 77 pin types/descriptions, and part metadata. Pad 77 retains its 6.06 × 6.56 mm copper land with a reduced 4.66 × 5.16 mm paste aperture (~60.5% coverage); true window-pane segmentation is not safely supported by the current footprint API.
Verification confirmed 77 unique pins and 77 footprint pads. Details are recorded in the updated Part Audit Report.
Review stencil and land
Add USB impedance metadata
Inspect 3D package fit
Prepare bring-up guidance

Name
Pin #
Type
Section
Pin Group
Orientation
Order
Sub-symbol
Pin Description
V33_SYN
1
Power In
3.3 V analog supply for synthesizer circuits.
V12_SYN
2
Power In
1.2 V analog supply for synthesizer circuits.
V12_S0
3
Power In
1.2 V analog supply for RF path 0.
RF2IN_S0
4
Input
RF path 0, 2.4 GHz receive negative input.
RF2IP_S0
5
Input
RF path 0, 2.4 GHz receive positive input.
V33_PAD2G_S0
6
Power In
3.3 V analog supply for path 0 2.4 GHz pad circuitry.
RF2ON_S0
7
Output
RF path 0, 2.4 GHz transmit negative output.
RF2OP_S0
8
Output
RF path 0, 2.4 GHz transmit positive output.
V33_PAD5G_S0
9
Power In
3.3 V analog supply for path 0 5 GHz pad circuitry.
RF5OP_S0
10
Output
RF path 0, 5 GHz transmit positive output.
VD33PA5G_S0
11
Power In
3.3 V analog supply for path 0 5 GHz power-amplifier circuitry.
RF5IP_S0
12
Input
RF path 0, 5 GHz receive positive input.
RF5IN_S0
13
Input
RF path 0, 5 GHz receive negative input.
V12_BB_S0
14
Power In
1.2 V analog supply for path 0 baseband circuitry.
LNAON_S0
15
Output
External low-noise-amplifier enable for RF path 0.
PAPE_2G_S0
16
Output
2.4 GHz transmit power-amplifier enable for RF path 0.
PAPE_5G_S0
17
Output
5 GHz transmit power-amplifier enable for RF path 0.
TRSW_S0
18
Output
Transmit/receive path-select control for RF path 0.
TRSWB_S0
19
Output
Complementary transmit/receive path-select control for RF path 0.
VD12A
20
Power In
1.2 V analog supply.
VD33A
21
Power In
3.3 V analog supply.
XI
22
Input
40 MHz crystal or oscillator reference input.
XO
23
Output
40 MHz crystal reference output.

RTL8812AU-CG