Part Review and Datasheet Update

flux

Review complete. I created the detailed report here: Part Review: PCM1822IRTER.
Open items:
  • Datasheet URL was already populated, so I did not replace it.
  • Main mismatch: the datasheet shows WQFN-20 plus one exposed VSS thermal pad, but the symbol/footprint currently exposes five extra VSS pins/pads numbered 21–25.
  • Pin types/descriptions are mostly unset and should be populated from the datasheet.
Suggested next steps:
  1. Replace pins/pads 21–25 with one exposed pad terminal, pin 21 / VSS thermal pad.
  2. Update footprint to 20 perimeter pads + one central exposed pad per TI RTE0020A.
  3. Populate pin types and descriptions from the datasheet table.
  4. Optionally change Mount from Hardware to SMD / surface mount.
A

adrian95

Populate all pin types and descriptions from the datasheet table.

flux

I’ll update each terminal’s Pin Type and Pin Description from the PCM1822 datasheet pin-function table, then verify the properties were applied.

flux

Populated and verified Pin Type and Pin Description for all 25 current terminals from the PCM1822 datasheet table.
Open items:
  • The current part still has five thermal-pad/VSS terminals numbered 21–25; the datasheet represents this as one exposed VSS thermal pad.
Suggested next steps:
  1. Normalize Pin Type values to Flux’s standard ERC options if desired.
  2. Replace VSS_5–VSS_9 with a single exposed-pad terminal/pad.
  3. Re-run the part review after the thermal pad cleanup.
Fix pad, types, review
Fix exposed pad
Normalize pin types
Verify footprint geometry
Run part review
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Files

Pins

Symbol

Layout

3D View

IN2M
Pin Number
4
IN2P
Pin Number
3
VSS_8
Pin Number
24
IN1M
Pin Number
2
VSS_4
Pin Number
20
DREG
Pin Number
14
MD0
Pin Number
12
IN1P
Pin Number
1
FMT0
Pin Number
19
VSS_9
Pin Number
25
MD1
Pin Number
11
AREG
Pin Number
17
SDOUT
Pin Number
6
VSS_3
Pin Number
15
VSS_2
Pin Number
10
VSS_1
Pin Number
5
VSS_7
Pin Number
23
VSS_5
Pin Number
21
BCLK
Pin Number
7
MSZ
Pin Number
13
FSYNC
Pin Number
8
IOVDD
Pin Number
9
AVDD
Pin Number
16
VREF
Pin Number
18
VSS_6
Pin Number
22
Name
Pin #
Type
Section
Pin Group
Orientation
Order
Sub-symbol
Pin Description
IN1P
1
Analog input
Analog input 1P pin.
IN1M
2
Analog input
Analog input 1M pin.
IN2P
3
Analog input
Analog input 2P pin.
IN2M
4
Analog input
Analog input 2M pin.
VSS_1
5
Analog supply
Bottom
VSS analog supply/ground pin. Short this pin directly to the board ground plane.
SDOUT
6
Digital output
Audio serial data interface bus output.
BCLK
7
Digital I/O
Audio serial data interface bus bit clock.
FSYNC
8
Digital I/O
Audio serial data interface bus frame synchronization signal.
IOVDD
9
Digital supply
Digital I/O power supply, nominal 1.8 V or 3.3 V.
VSS_2
10
Analog supply
Bottom
VSS analog supply/ground pin. Short this pin directly to the board ground plane.
MD1
11
Digital input
Device configuration mode select 1 pin.
MD0
12
Digital input
Device configuration mode select 0 pin.
MSZ
13
Digital input
Audio interface bus master or slave select pin.
DREG
14
Digital supply
Digital regulator output voltage for digital core supply, nominal 1.5 V.
VSS_3
15
Analog supply
Bottom
VSS analog supply/ground pin. Short this pin directly to the board ground plane.
AVDD
16
Analog supply
Analog power supply, nominal 3.3 V.
AREG
17
Analog supply
Analog on-chip regulator output voltage for analog supply, nominal 1.8 V.
VREF
18
Analog
Analog reference voltage filter output.
FMT0
19
Digital input
Audio interface format select pin referred to AVDD supply.
VSS_4
20
Analog supply
Bottom
VSS analog supply/ground pin. Short this pin directly to the board ground plane.
VSS_5
21
Ground supply
Bottom
Thermal pad VSS ground supply. Thermal pad is shorted to internal device ground; short directly to board ground plane.
VSS_6
22
Ground supply
Bottom
Thermal pad VSS ground supply. Thermal pad is shorted to internal device ground; short directly to board ground plane.
VSS_7
23
Ground supply
Bottom
Thermal pad VSS ground supply. Thermal pad is shorted to internal device ground; short directly to board ground plane.

PCM1822IRTER