# network-audio-sink v1.0 ## Description Carrier board schematic for network-audio-sink v1.0 using plug-in dev board modules via pin headers plus selected on-board ICs. Initial net plan includes 5V_BUS, 3V3, GND, I2S0/I2S1 audio, SPI control, and Ethernet differential-pair nets. ## Project Details - **Owner:** ncpe2001 - **Created:** 6/29/2026 - **Last Updated:** 6/29/2026 - **Visibility:** Public ## Key Components ### BR1 — [MB4S-TP](https://www.flux.ai/lcsc/mb4s-tp~w3kp.md) - Manufacturer Part Number: MB4S-TP - Manufacturer Name: MCC(美微科) - Package or Case Code: MBS_L4.7-W4.0-P2.50-LS7.0-TL - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1811142009_MCC-Micro-Commercial-Components-MB4S-TP_C151727.pdf - LCSC Part Number: C151727 - Part Type: Bridge Rectifiers - Role Details: PoE Mode A/data-pair bridge rectifier: AC pins from J1 TCT/RCT, DC+ to U2 VIN+, DC- to U2 VIN-. - Product Info Url: https://lcsc.com/product-detail/Bridge-Rectifiers_MCC_MB4S-TP_MB4S-TP_C151727.html **Pins:** - - [pin 4] - + [pin 3] - AC [pin 2] - AC [pin 1] ### BR2 — [MB4S-TP](https://www.flux.ai/lcsc/mb4s-tp~w3kp.md) - LCSC Part Number: C151727 - Manufacturer Part Number: MB4S-TP - Package or Case Code: MBS_L4.7-W4.0-P2.50-LS7.0-TL - Manufacturer Name: MCC(美微科) - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1811142009_MCC-Micro-Commercial-Components-MB4S-TP_C151727.pdf - Role Details: PoE Mode B/spare-pair bridge rectifier: AC pins from J1 VC+ and VC- center-tap nets, DC+ to U2 VIN+, DC- to U2 VIN-. - Part Type: Bridge Rectifiers - Product Info Url: https://lcsc.com/product-detail/Bridge-Rectifiers_MCC_MB4S-TP_MB4S-TP_C151727.html **Pins:** - - [pin 4] - + [pin 3] - AC [pin 2] - AC [pin 1] ### D1 — [1N5822RLG](https://www.flux.ai/lcsc/1n5822rlg~v8yy.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410010333_onsemi-1N5822RLG_C232464.pdf - Part Type: Schottky Barrier Diodes (SBD) - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/Others_ON-Semicon_1N5822RLG_ON-Semicon-ON-1N5822RLG_C232464.html - Role Details: PoE 5V diode-OR into 5V_BUS - Package or Case Code: DO-201AD_BD5.3-L8.4-P12.50-D1.4-RD - Manufacturer Name: onsemi(安森美) - LCSC Part Number: C232464 - Diode Type: Schottky - Manufacturer Part Number: 1N5822RLG **Pins:** - A [pin 2] - C [pin 1] ### FB1 — [2508056017Y2](https://www.flux.ai/adrian95/2508056017y2~n1q.md) - Part Type: Ferrite Bead - Package: 0805 - Role Details: AVDD ferrite bead; requested 0603, library fallback is 0805 - Manufacturer Name: Fair-Rite Products Corp. - Datasheet URL: https://fair-rite.com/print_product.php?pid=33610 - Manufacturer Part Number: 2508056017Y2 - License: https://creativecommons.org/licenses/by/4.0/ - Impedance: 600Ω @ 100MHz **Pins:** - 1 [pin 1] - 2 [pin 2] ### H1A — [Pin Socket 01x20 2.54mm Vertical](https://www.flux.ai/adrian95/pin-socket-01x20-254mm-vertical~p89.md) - Connector Gender: Female - License: https://creativecommons.org/licenses/by/4.0/ - Connector Positions: 20 - Role Details: ESP32 DevKit H1 pins 1-20; pairs with H1B for pins 21-22 - Part Type: Connector - Connector Pitch: 2.54mm - Connector Type: Headers and Wire Housings **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_11 [pin 11] - Pin_12 [pin 12] - Pin_13 [pin 13] - Pin_14 [pin 14] - Pin_15 [pin 15] - Pin_16 [pin 16] - Pin_17 [pin 17] - Pin_18 [pin 18] - Pin_19 [pin 19] - Pin_2 [pin 2] - Pin_20 [pin 20] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### H1B — [Pin Socket 01x02 2.54mm Vertical](https://www.flux.ai/adrian95/pin-socket-01x02-254mm-vertical~k8w.md) - License: https://creativecommons.org/licenses/by/4.0/ - Connector Type: Headers and Wire Housings - Part Type: Connector - Connector Pitch: 2.54mm - Connector Gender: Female - Role Details: ESP32 DevKit H1 pins 21-22; placed end-to-end below H1A - Connector Positions: 2 **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### H2A — [Pin Socket 01x20 2.54mm Vertical](https://www.flux.ai/adrian95/pin-socket-01x20-254mm-vertical~p89.md) - License: https://creativecommons.org/licenses/by/4.0/ - Connector Type: Headers and Wire Housings - Connector Pitch: 2.54mm - Part Type: Connector - Role Details: ESP32 DevKit H2 pins 1-20; pairs with H2B for pins 21-22 - Connector Positions: 20 - Connector Gender: Female **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_11 [pin 11] - Pin_12 [pin 12] - Pin_13 [pin 13] - Pin_14 [pin 14] - Pin_15 [pin 15] - Pin_16 [pin 16] - Pin_17 [pin 17] - Pin_18 [pin 18] - Pin_19 [pin 19] - Pin_2 [pin 2] - Pin_20 [pin 20] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### H2B — [Pin Socket 01x02 2.54mm Vertical](https://www.flux.ai/adrian95/pin-socket-01x02-254mm-vertical~k8w.md) - Connector Pitch: 2.54mm - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Connector Positions: 2 - Role Details: ESP32 DevKit H2 pins 21-22; placed end-to-end below H2A - Connector Gender: Female - Connector Type: Headers and Wire Housings **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### H3 — [Pin Socket 01x09 2.54mm Vertical](https://www.flux.ai/adrian95/pin-socket-01x09-254mm-vertical~p7t.md) - Connector Rows: 1 - Role Details: Front Left MAX98357A socket - Part Type: Connector - Connector Pitch: 2.54mm - Connector Type: Headers and Wire Housings - Connector Positions: 9 - Connector Gender: Female - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### H4 — [Pin Socket 01x09 2.54mm Vertical](https://www.flux.ai/adrian95/pin-socket-01x09-254mm-vertical~p7t.md) - Role Details: Front Right MAX98357A socket - Connector Gender: Female - Connector Type: Headers and Wire Housings - Connector Pitch: 2.54mm - Part Type: Connector - Connector Rows: 1 - Connector Positions: 9 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### H5 — [Pin Socket 01x09 2.54mm Vertical](https://www.flux.ai/adrian95/pin-socket-01x09-254mm-vertical~p7t.md) - Part Type: Connector - Connector Pitch: 2.54mm - Connector Positions: 9 - Connector Type: Headers and Wire Housings - License: https://creativecommons.org/licenses/by/4.0/ - Connector Rows: 1 - Connector Gender: Female - Role Details: Rear Left MAX98357A socket **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### H6 — [Pin Socket 01x09 2.54mm Vertical](https://www.flux.ai/adrian95/pin-socket-01x09-254mm-vertical~p7t.md) - Connector Rows: 1 - Connector Type: Headers and Wire Housings - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Rear Right MAX98357A socket - Connector Positions: 9 - Connector Pitch: 2.54mm - Connector Gender: Female - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### J1 — [ARJM11D7-114-AB-EW2](https://www.flux.ai/adrian95/arjm11d7-114-ab-ew2~ctl.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Datasheet URL: https://abracon.com/Magnetics/ARJM11.pdf - Manufacturer Part Number: ARJM11D7-114-AB-EW2 - Role Details: PoE-capable RJ45 magjack equivalent to Pulse J1012F21CNL; place on board edge, cable plugs from side - Manufacturer Name: Abracon LLC - Connector Type: Modular / Ethernet Connectors **Pins:** - ANODE_GREEN [pin L1] - ANODE_YELLOW [pin L3] - CATHODE_GREEN [pin L2] - CATHODE_YELLOW [pin L4] - MH1 [pin MH1] - MH2 [pin MH2] - RCT [pin 4] - RD- [pin 3] - RD+ [pin 5] - TCT [pin 9] - TD- [pin 8] - TD+ [pin 10] - VC-_1 [pin 1] - VC-_2 [pin 2] - VC+_1 [pin 6] - VC+_2 [pin 7] ### J2 — [XY301V-A-5.0-2P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-2p~u6.md) - Connector Type: Terminal Blocks - Manufacturer Name: Ningbo Xinlaiya Elec. - Part Type: Connector - Role Details: FL speaker output: J2-1 FL+, J2-2 FL- - Current Rating: 1A - Connector Positions: 2 - Connector Pitch: 5mm - Manufacturer Part Number: XY301V-A-5.0-2P - Datasheet URL: https://www.lcsc.com/datasheet/C557651.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=E1BYV1AHFgUMXgFVQ1AMU1JVQFReXgIATwJfA10DFVkxVlNRT1dXXlVTQ1hbUjsOAxUeFF5JWBYZEEoBGA4JCwFIFA4DSA%3D%3D **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### J3 — [XY301V-A-5.0-2P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-2p~u6.md) - Manufacturer Part Number: XY301V-A-5.0-2P - Connector Positions: 2 - Datasheet URL: https://www.lcsc.com/datasheet/C557651.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=E1BYV1AHFgUMXgFVQ1AMU1JVQFReXgIATwJfA10DFVkxVlNRT1dXXlVTQ1hbUjsOAxUeFF5JWBYZEEoBGA4JCwFIFA4DSA%3D%3D - Connector Type: Terminal Blocks - Connector Pitch: 5mm - Current Rating: 1A - Part Type: Connector - Manufacturer Name: Ningbo Xinlaiya Elec. - Role Details: FR speaker output: J3-1 FR+, J3-2 FR- **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### J4 — [XY301V-A-5.0-2P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-2p~u6.md) - Datasheet URL: https://www.lcsc.com/datasheet/C557651.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=E1BYV1AHFgUMXgFVQ1AMU1JVQFReXgIATwJfA10DFVkxVlNRT1dXXlVTQ1hbUjsOAxUeFF5JWBYZEEoBGA4JCwFIFA4DSA%3D%3D - Manufacturer Part Number: XY301V-A-5.0-2P - Role Details: RL speaker output: J4-1 RL+, J4-2 RL- - Connector Positions: 2 - Connector Type: Terminal Blocks - Manufacturer Name: Ningbo Xinlaiya Elec. - Current Rating: 1A - Part Type: Connector - Connector Pitch: 5mm **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### J5 — [XY301V-A-5.0-2P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-2p~u6.md) - Manufacturer Part Number: XY301V-A-5.0-2P - Role Details: RR speaker output: J5-1 RR+, J5-2 RR- - Connector Type: Terminal Blocks - Datasheet URL: https://www.lcsc.com/datasheet/C557651.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=E1BYV1AHFgUMXgFVQ1AMU1JVQFReXgIATwJfA10DFVkxVlNRT1dXXlVTQ1hbUjsOAxUeFF5JWBYZEEoBGA4JCwFIFA4DSA%3D%3D - Connector Positions: 2 - Connector Pitch: 5mm - Part Type: Connector - Manufacturer Name: Ningbo Xinlaiya Elec. - Current Rating: 1A **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### U1 — [W5500](https://www.flux.ai/kicad-part-library/w5500~0km.md) - Role Details: Replacement W5500 SPI Ethernet controller; official KiCad LQFP-48 footprint - Datasheet URL: http://wizwiki.net/wiki/lib/exe/fetch.php/products:w5500:w5500_ds_v109e.pdf - Package: LQFP-48_7x7mm_P0.5mm - Package or Case Code: LQFP-48_7x7mm_P0.5mm - Manufacturer Part Number: W5500 **Pins:** - ~{INT} [pin 36] - ~{RST} [pin 37] - ~{SCS} [pin 32] - 1V2O [pin 22] - ACTLED [pin 27] - AGND [pin 3] - AGND [pin 9] - AGND [pin 48] - AGND [pin 19] - AGND [pin 16] - AGND [pin 14] - AVDD [pin 11] - AVDD [pin 21] - AVDD [pin 4] - AVDD [pin 15] - AVDD [pin 17] - AVDD [pin 8] - DNC [pin 7] - DUPLED [pin 26] - EXRES1 [pin 10] - GND [pin 29] - LINKLED [pin 25] - MISO [pin 34] - MOSI [pin 35] - NC [pin 46] - NC [pin 13] - NC [pin 12] - NC [pin 47] - PMODE0 [pin 45] - PMODE1 [pin 44] - PMODE2 [pin 43] - RSVD [pin 38] - RSVD [pin 23] - RSVD [pin 39] - RSVD [pin 40] - RSVD [pin 41] - RSVD [pin 42] - RXN [pin 5] - RXP [pin 6] - SCLK [pin 33] - SPDLED [pin 24] - TOCAP [pin 20] - TXN [pin 1] - TXP [pin 2] - VBG [pin 18] - VDD [pin 28] - XI/CLKIN [pin 30] - XO [pin 31] ### U2 — Ag9905M - Part Type: Integrated Circuits - Manufacturer Part Number: Ag9905-LP - Datasheet URL: https://silvertel.com/images/datasheets/Ag9900-datasheet-high-efficiency-Power-over-Ethernet-plus-PD-module.pdf - Role Details: Silvertel Ag9905-LP PoE PD 48V to 5V module; 8-pin low-profile DIL. Pin 1/2 +VDC, pin 3 -VDC/GND, pin 4 ADJ NC, pins 5/6 VIN+, pins 7/8 VIN-. Verify custom footprint before manufacturing. - Mount: Through Hole - Package or Case Code: 8-DIP - Package: DIP-8 low profile module, 14mm x 21mm outline, 2.54mm pitch - Manufacturer Name: Silvertel **Pins:** - -VDC1 [pin 2] - -VDC2 [pin 3] - +VDC [pin 1] - ADJ [pin 4] - VIN-1 [pin 7] - VIN-2 [pin 8] - VIN+1 [pin 5] - VIN+2 [pin 6] ### Y1 — ECS-250-20-33-TR3 - Manufacturer Name: ECS Inc. - Part Type: Crystals and Oscillators - Role Details: W5500 25 MHz crystal, 20 pF CL - Manufacturer Part Number: ECS-250-20-33-TR3 - Package or Case Code: CRYSTAL-SMD - Package: 3225 SMD - Frequency: 25MHz - Datasheet URL: https://ecsxtal.com/products/crystals/surface-mount-crystals/ecs-250-20-33-tr3/ - Mount: Surface Mount **Pins:** - NC1 [pin 2] - NC2 [pin 4] - XTAL1 [pin 1] - XTAL2 [pin 3] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/ncpe2001/network-audio-sink-v1p0~i8](https://www.flux.ai/ncpe2001/network-audio-sink-v1p0~i8).* --- *Generated from [https://www.flux.ai/ncpe2001/network-audio-sink-v1p0~i8](https://www.flux.ai/ncpe2001/network-audio-sink-v1p0~i8)*