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.
adrian95

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

Preview

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
Part Type
Pin Description
Pin Orientation
IN1P
1
Analog input
Terminal
Analog input 1P pin.
IN1M
2
Analog input
Terminal
Analog input 1M pin.
IN2P
3
Analog input
Terminal
Analog input 2P pin.
IN2M
4
Analog input
Terminal
Analog input 2M pin.
VSS_1
5
Analog supply
Terminal
VSS analog supply/ground pin. Short this pin directly to the board ground plane.
Bottom
SDOUT
6
Digital output
Terminal
Audio serial data interface bus output.
BCLK
7
Digital I/O
Terminal
Audio serial data interface bus bit clock.
FSYNC
8
Digital I/O
Terminal
Audio serial data interface bus frame synchronization signal.
IOVDD
9
Digital supply
Terminal
Digital I/O power supply, nominal 1.8 V or 3.3 V.
VSS_2
10
Analog supply
Terminal
VSS analog supply/ground pin. Short this pin directly to the board ground plane.
Bottom
MD1
11
Digital input
Terminal
Device configuration mode select 1 pin.
MD0
12
Digital input
Terminal
Device configuration mode select 0 pin.
MSZ
13
Digital input
Terminal
Audio interface bus master or slave select pin.
DREG
14
Digital supply
Terminal
Digital regulator output voltage for digital core supply, nominal 1.5 V.
VSS_3
15
Analog supply
Terminal
VSS analog supply/ground pin. Short this pin directly to the board ground plane.
Bottom
AVDD
16
Analog supply
Terminal
Analog power supply, nominal 3.3 V.
AREG
17
Analog supply
Terminal
Analog on-chip regulator output voltage for analog supply, nominal 1.8 V.
VREF
18
Analog
Terminal
Analog reference voltage filter output.

PCM1822IRTER

PCM1822IRTER thumbnail