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Contents

Pinout
Key specifications
CAD (KiCad official)
Provenance

README

markdown

VS1053B-L

VLSI Solution · Audio Interface ICs · LQFP-48(7x7)

VS1053B-L from VLSI Solution, in a LQFP-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	MICP / LINE1	input	Positive differential mic input, self-biasing / Line-in 1
2	MICN	input	Negative differential mic input, self-biasing
3	XRESET	input	Active low asynchronous reset, schmitt-trigger input
4	DGND0	power_in	Core & I/O ground
5	CVDD0	power_in	Core power supply
6	IOVDD0	power_in	I/O power supply
7	CVDD1	power_in	Core power supply
8	DREQ	output	Data request, input bus
9	GPIO2 / DCLK1	bidirectional	General purpose IO 2 / serial input data bus clock
10	GPIO3 / SDATA1	bidirectional	General purpose IO 3 / serial data input
11	GPIO6 / I2S SCLK	bidirectional	General purpose IO 6 / I2S SCLK
12	GPIO7 / I2S SDATA	bidirectional	General purpose IO 7 / I2S SDATA
13	XDCS / BSYNC	input	Data chip select / byte sync
14	IOVDD1	power_in	I/O power supply
15	VCO	output	For testing only (Clock VCO output)
16	DGND1	power_in	Core & I/O ground
17	XTALO	output	Crystal output
18	XTALI	input	Crystal input
19	IOVDD2	power_in	I/O power supply
20	DGND2	power_in	Core & I/O ground
21	DGND3	power_in	Core & I/O ground
22	DGND4	power_in	Core & I/O ground
23	XCS	input	Chip select input (active low)
24	CVDD2	power_in	Core power supply
25	GPIO5 / I2S MCLK	bidirectional	General purpose IO 5 / I2S MCLK
26	RX	input	UART receive, connect to IOVDD if not used
27	TX	output	UART transmit
28	SCLK	input	Clock for serial bus
29	SI	input	Serial input
30	SO	tri_state	Serial output
31	CVDD3	power_in	Core power supply
32	XTEST	input	Reserved for test, connect to IOVDD
33	GPIO0	bidirectional	General purpose IO 0 (SPIBOOT), use 100 kΩ pull-down resistor
34	GPIO1	bidirectional	General purpose IO 1
35	GND	power_in	I/O Ground
36	GPIO4 / I2S LROUT	bidirectional	General purpose IO 4 / I2S LROUT
37	AGND0	power_in	Analog ground, low-noise reference
38	AVDD0	power_in	Analog power supply
39	RIGHT	output	Right channel output
40	AGND1	power_in	Analog ground
41	AGND2	power_in	Analog ground
42	GBUF	output	Common buffer for headphones, do NOT connect to ground!
43	AVDD1	power_in	Analog power supply
44	RCAP	bidirectional	Filtering capacitance for reference
45	AVDD2	power_in	Analog power supply
46	LEFT	output	Left channel output
47	AGND3	power_in	Analog ground
48	LINE2	input	Line-in 2 (right channel)

Key specifications

Parameter	Value
Manufacturer	VLSI Solution
Package	LQFP-48(7x7)
Category	Interface
Pins	48

CAD (KiCad official)

Symbol: VS1053B-L
Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
3D model files: vs1053b-l-etched.step / vs1053b-l-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); vs1053b-l.step / vs1053b-l.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: VLSI Solution datasheet (79 pp, sha256 8b76e79550839a4b, retrieved 2026-09-22, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF