AVS VWRK4 Module Datasheet

Product overview

Tuya AVS voice module VWRK4 is based on the powerful RockChip 3308 IC which integrated with 4-Core 64 bit A35 ARM Core. The Module is integrated with a voice wake & noise cancellation algorithm and which can be applied in the smart device/gateway/smart speaker. The CPU RK3308’s frequency is 1.3GHz, which can provide powerful computing ability. Also, the module is integrated with the RF chip RTL8723DS which contains Wi-Fi Sing-band 1X1+BluetoothBR/EDR/Bluetooth Low Energy (LE) 4.0 This can make it easy to connect to the Tuya Developer Platform.

Features

• High powerful ARM 4-Core 64 bit A35 RochChip 3308 CPU
• Frequency: 1.3GHz
• Work voltage: 4.2-5.5V (5V default)
• Peripheral: 2Uart, 7MIC, RGB666, 1SPI, 2I2C, 2USB, GPIOs, 3ADC
• Antenna: IPEX
• Sampling Rate:16K/16bit
• Audio Feature
  • 4 ways mic pickup, stereo playback.
  • 6 ways mic pickup, single-channel playback.
  • Audio output: stereo HPOUT and stereo LINEOUT
  • Audio AUX IN: support
• Entertainment:

  • Approved: amazon music, audible, iHeartRadio, TuneIn

  • Skill: All the skills contains in Alexa. For example:

  • Newest arrivals, Business & finance, Connected Car,Education & Reference, Food &Drink, Game & Trivia, Health & Fitness, kids, lifestyle, local, Movies & TV, Music & Audio, News, Novelty & Humor, Productivity, Shopping, Smart Home, Sports, Travel & Transportation, Utilities,Weather.

    

Applications

• Smart household and home appliances

• Smart Device

• Net Gateway Control

• Voice Control Panel

Module interfaces

Dimensions and footprint

The Module has four rows of pins with 1mm Pin Width and 1.5mm pin spacing, the total number of pins is 82, and its dimensions is 35mm35mm3.2mm (WLH). The following figure describes the Dimension views.

Note: The default dimensional tolerance is ±0.35mm.

The total pins are 82 and the opposite side has the same number of pins, one side is 20 and the other is 21. The following figure describes the footprint views.

|Parameter |Description |
|---------|--------|---------|—|-------|-----|
|MCU |RK3308 |
|Flash| 128 MByte |
|DDR |128 MByte|
|Wi-Fi |Wi-Fi 2.4G, b/g/n|
|Bluetooth| Classical Bluetooth + Bluetooth LE 4.2|
|Antenna| External antenna, reserved ipex antenna |
|Power interface| microUSB 5V1A |
|Auxout/Auxin| Reserved Auxout/Auxin interface |
| Other interfaces | Reserved UART/IIC/PWM/GPIO interface |

Circuit Diagram of VWRK4 voice kit

Pin definition

Pin No.	Pin Name	Pad Type	Function
1	GND	P	Power Supply reference ground pin
2	ANT	O	The RF ANT Interface
3	GND	P	Power Supply reference ground pin
4	ADC_KEY_IN2	AI	Analog of ADC Input
5	SAR_ADC_IN3	AI	Analog of ADC Input
6	UNO_RX	I/O	Debug UART RX
7	UNO_TX	I/O	Debug UART TX
8	USB_HOST_DM	I/O	USB Data PIN for Host
9	USB_HOST_DP	I/O	USB Data PIN for Host
10	USB_OTG_ID	I/O	USB ID PIN for OTG
11	USB_OTG_DM	I/O	USB Data PIN for OTG
12	USB_OTG_DP	I/O	USB Data PIN for OTG
13	PHONE_CTRL	I/O	The General I/O Pin
14	PHONE_DET	I/O	The General I/O Pin
15	AUX_IN_CTRL	I/O	Selection of HPout or Lineout/ General I/O
16	SPK_MUTE	I/O	Speaker mute Control Pin /The General I/O Pin
17	MIC_LED	I/O	Control of Led Peripherals/ General I/O
18	GND	P	Power Supply reference ground pin
19	VCC-IO_OUT	P	Power supply pin for Peripherals
20	GND	P	Power Supply reference ground pin
21	VCC-5V	P	Power supply pin(5V)
22	VCC-5V	P	Power supply pin(5V)
23	GND	P	Power Supply reference ground pin
24	IR_RX	I/O	IR Receive Pin / General IO Pin
25	IR_TX	I/O	IR Tranmit Pin / General IO Pin
26	I2C_SDA	I/O	I2C SDA for Peripherals
27	I2C_CLK	I/O	I2C CLK for Peripherals
28	LCD_PWR	I/O	LCD Power Control Pin
29	LCD_BL	I/O	LCD Back light / General IO Pin/PWM
30	LCD_RST	I/O	LCD Reset Pin / General IO Pin
31	LCD_DEN	I/O	LCD Data Enable/ General IO Pin
32	LCD_HS	I/O	LCD Horizontal sync PIN/ General IO Pin
33	LCD_VS	I/O	LCD Vertical sync PIN/ General IO Pin
34	LCD_CLK	I/O	LCD Clk Pin / General IO Pin
35	LCD_D0	I/O	LCD Data Pin / General IO Pin
36	LCD_D1	I/O	LCD Data Pin / General IO Pin
37	LCD_D2	I/O	LCD Data Pin / General IO Pin
38	LCD_D3	I/O	LCD Data Pin / General IO Pin
39	LCD_D4	I/O	LCD Data Pin / General IO Pin
40	LCD_D5	I/O	LCD Data Pin / General IO Pin
41	LCD_D6	I/O	LCD Data Pin / General IO Pin
42	LCD_D11	I/O	LCD Data Pin / General IO Pin
43	LCD_D10	I/O	LCD Data Pin / General IO Pin
44	LCD_D8	I/O	LCD Data Pin / General IO Pin
45	LCD_D7	I/O	LCD Data Pin / General IO Pin
46	LCD_D13	I/O	LCD Data Pin / General IO Pin
47	LCD_D14	I/O	LCD Data Pin / General IO Pin
48	LCD_D9	I/O	LCD Data Pin / General IO Pin
49	LCD_D17	I/O	LCD Data Pin / General IO Pin
50	LCD_D12	I/O	LCD Data Pin / General IO Pin
51	LCD_D15	I/O	LCD Data Pin / General IO Pin
52	LCD_D16	I/O	LCD Data Pin / General IO Pin
53	LCD_SPI_RX	I/O	SPI Data Pin for LCD / General IO Pin
54	LCD_SPI_CLK	I/O	SPI CLk Pin for LCD / General IO Pin
55	LCD_SPI_CS	I/O	SPI CS Pin for LCD / General IO Pin
56	LCD_SPI_TX	I/O	SPI Data Pin for LCD / General IO Pin
57	GND	P	Power Supply reference ground pin
58	HPOUT_R	AO	Headphone output Right
59	HPOUT_L	AO	Headphone output Left
60	LINEOUT_R	O	Line output Right
61	LINEOUT_L	O	Line output Left
62	MIC2N	AI	The Audio Analog input
63	MIC2P	AI	The Audio Analog input
64	MIC3N	AI	The Audio Analog input
65	MIC3P	AI	The Audio Analog input
66	MIC4N	AI	The Audio Analog input
67	MIC4P	AI	The Audio Analog input
68	MIC5N	AI	The Audio Analog input
69	MIC5P	AI	The Audio Analog input
70	MIC6N	AI	The Audio Analog input
71	MIC6P	AI	The Audio Analog input
72	MIC7N	AI	The Audio Analog input
73	MIC7P	AI	The Audio Analog input
74	MIC8N	AI	The Audio Analog input
75	MIC8P	AI	The Audio Analog input
76	GND	P	Power Supply reference ground pin
77	AP_CTS	I/O	UART1 CTS PIN / General IO Pin
78	AP_RTS	I/O	UART1 RTS PIN / General IO Pin
79	AP_RX	I/O	UART1 RX PIN / General IO Pin
80	AP_TX	I/O	UART1 TX PIN / General IO Pin
81	RST	O	The System HardWare Reset Pin
82	ADC_KEY_IN1	AI	Analog of ADC Input

Note:

• P indicates power supply pins, I/O indicates input/output pins, and AI indicates analog input pins, AO indicates analog output pins.
• RST is only a hardware reset pin.
• UNO_TX/RX are user-side serial interface pins, can be used to debug the system.

Electrical parameters

Absolute electrical parameters

Parameter	Description	Minimum Value	Maximum Value	Unit
Ts	Storage Temperature	-40	70	℃
VCC	Power Supply Voltage	-0.3	5.5	V
ESD (HBM)	TAMB-25℃	N/A	2000	V
ESD (MM)	TAMB-25℃	N/A	500	V

Electrical conditions

Parameter	Description	Minimum Value	Typical Value	Maximum Value	Unit
Ta	Working temperature	-20	NA	60	℃
VCC	Power Supply Voltage	4.2	5	5.5	V
Vil	IO Low-level input	NA	NA	0.8	V
Vih	IO high-level input	2	NA	3.3+0.3	V
Vol	IO Low-level output	NA	NA	0.4	V
Voh	IO high-level output	2.9	3.3	-	V
Imax	IO Drive Current	-	2	8	mA

Working current

The following table describes the power consumption during the working mode.

Working Mode	Status (Ta=25℃, VCC=5V)	Typical Value	Peak Value	Unit	unit
EZ	In EZ mode and Wi-Fi indicator blinks quickly	193	876	mA	℃
Connected and idle	The module is connected to the network and the Wi-Fi indicator is steady on	145	788	mA	V
Connected and Communicate	The module is connected to the network and the Wi-Fi transmits data	239	892	mA	V

Note: the power consumption is tested at the supply voltage is 5V.

Transmit power

Wi-Fi transmit power

Wi-Fi TX	Parameter	Parameter	Parameter	Typical	Unit
Wi-Fi TX	Mode	Rate	Transmit Power
IRF	11b	11Mbps	+17dBm	267.2	mA
IRF	11g	54Mbps	+14.5dBm	272.0	mA
IRF	11n/HT20	MCS7	+13.5dBm	246.0	mA
IRF	11n/HT40	MCS7	+13.5dBm	246.0	mA

Note: working condition, VBAT=5V, VDD_ANA=1.8V,internal TOP LDO supply

Wi-Fi Receive Power

Wi-Fi RX	Parameter	Typical	Unit	Typical	Unit
ACTIVE	1M DSSS	72	mA
ACTIVE	54M OFDM	84	mA	267.2	mA
DEEP SLEEP	11b	55	mA	272.0	mA
DEEP SLEEP	11g	-	mA	246.0	mA
DEEP SLEEP	11n/HT40	MCS7	+13.5dBm	246.0	mA

Note: working condition, VBAT=5V, VDD_ANA=1.8V, internal TOP LDO supply

Bluetooth transmit power

BT TX	Parameter	Parameter	Parameter	Typical	Unit
BT TX	Mode	Rate	Transmit Power
IRF	BR	1Mbps	9dBm	267.2	mA
IRF	EDR	3Mbps	8dBm	272.0	mA
IRF	Bluetooth LE	1Mbps	+8.5dBm	246.0	mA
IRF	11n/HT40	MCS7	+13.5dBm	246.0	mA

Note: working condition, VBAT=5V, VDD_ANA=1.8V, internal TOP LDO supply

Bluetooth receive power

BT RX	Mode	Parameter	Typical	unit	Unit
IRF	BR	DH1	-93	dBm
IRF	BR	DH5	-93	dBm	mA
IRF	EDR	2Mbps	-92	dBm	mA
IRF	EDR	3Mbps	-85	dBm	mA
IRF	Bluetooth LE	1Mbps	-98	dBm	mA
IRF	Bluetooth LE	DH1	-93	dBm

Note: VBAT=5V, VDD_ANA=1.8V,internal TOP LDO supply.

RF features

Basic RF characteristics

Parameter	description
Work frequency	2.400~2.484GHz
Wi-Fi standard	IEEE802.11b/g/n20/n40(channel 1-14)
Bluetooth LE standard	BRV2.0/EDR/Bluetooth LE 4.0
Wi-Fi modulation type	802.11b: CCK, DQPSK, DBPSK 802.11g: 64-QAM,16-QAM, QPSK, BPSK 802.11n: 64-QAM,16-QAM, QPSK, BPSK
Bluetooth LE modulation type	8DPSK, π /4 DQPSK, GFSK
Wi-Fi data transfer rate	11b:1,2,5.5,11(Mbps) 11g:6,9,12,18,24,36,48,54(Mbps) 11n:HT20MCS0~7 11n:HT40MCS0~7
Bluetooth LE data transfer rate	Basic Rate: 1 Mbps Bluetooth LE: 1Mbps Enhanced Data Rate(EDR): 2Mbps/3 Mbps
Antenna type	Support IPEX external antenna/ on board antenna connect

Output power (TX continuous transmit power, VBAT=5V)

Wi-Fi transmit power

Parameter		Min	Typical	Max	Unit
RF average output power, 802.11bCCKMode	11M	-	17	-	dBm
RF average output power, 802.11gOFDMMode	54M	-	14.5	-	dBm
RF average output power, 802.11n/20M Mode	MCS7	-	13.5	-	dBm
RF average output power, 802.11n/40M Mode	MCS7	-	13.5	-	dBm
Frequency error		-20	-	20	ppm

Bluetooth LE transmit power

Parameter		Min	Typical	Max	Unit
RF average output power, BR Ｍode	1M	-	+5.5	-	dBm
RF average output power, EDR Mode	3M	-	+5.5	-	dBm
RF average output power, Bluetooth LE Mode	1M	-	+5.5	-	dBm
Frequency error		-10	-	10	ppm
Frequency error		-20	-	20	ppm

Receive sensitivity (RX sensitivity,VBAT=5V)

Wi-Fi receive sensitivity

Parameter		Min	Typical	Max	Unit
RF average output power, BR Ｍode	1M	-	+5.5	-	dBm
RF average output power, EDR Mode	3M	-	+5.5	-	dBm
RF average output power, Bluetooth LE Mode	1M	-	+5.5	-	dBm
Frequency error		-10	-	10	ppm
Frequency error		-20	-	20	ppm

Bluetooth LE receive sensitivity

Symbol	Parameter	Parameter	Parameter	Unit
Symbol	Mode	Rate	Typical
IRF	BR	DH1	-91	dBm
IRF	BR	DH5	-91	dBm
IRF	EDR	2Mbps	-90	dBm
IRF	EDR	3Mbps	-84	dBm
IRF	Bluetooth LE	1Mbps	-95	dBm

Antenna

Antenna type

VWRK4 module uses the onboard IPEX connector to connect with the external FPC antenna.

Reduce antenna interference

For better performance, some suggestions to the users:

A. The distance between the module antenna and other metal parts must be at least 15mm.

B. If you use the IPEX Antenna, The Following options are some advice you should pay attention to.

• Place the IPEX interface near the outline of the board.

• No shield should cover on the IPEX interface.

  These suggestions are for the extended ANT interface pin used for IPEX ANT.

FPC antenna

VWRK4 module can use an external IPEX antenna by the onboard IPEX connector.

The FPC antenna is designed by Tuya cooperation and manufacture by Dongguan UB electronic company.

The FPC Antenna is together with the VWRK4 module. if the customer uses their own new Antenna, the FCC should be tested with the new Antenna.

The following table is the main technical specifications of the FPC Antenna.

Items	Main technical specifications
Manufacturer	UB
Product model	UB01C07F3D1388A
Frequency Range (MHZ)	2400~2500
Impedance(Ω)	50
AVG Gain(dBi)	2.13
VSWR	≤1.92
Admitted Power	1W
Polarization	Line
Connector Type	RF Cable+Terminal
Antenna Base	FPC
Operating Temp	-20℃~+70℃
Storage Temp	-20℃~+70℃

The following figure is the Picture of the FPC antenna. All the features of the FPC antenna can be reviewed from the “The Specification of the FPC antenna”.

Packaging information

Mechanical dimensions

The following are the mechanical dimensions of the VWRK4 module, the width, and the length are 35mm*35mm.

The following figure describes VWRK4 mechanical dimensions of the top side

The following figure describes VWRK4 mechanical dimensions of the bottom side

Note: The Pads beyond the dimensions are cut and a half left, if you want to design the package of the VWRK4, be careful of the pad dimensions.

Appendix: Statement

Federal Communications Commission (FCC) Declaration of Conformity

FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Radiation Exposure Statement

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled rolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and your body.

Important Note

This radio module must not be installed to co-locate and operating simultaneously with other radios in the host system except in accordance with FCC multi-transmitter product procedures. Additional testing and equipment authorization may be required to operate simultaneously with other radio.

The availability of some specific channels and/or operational frequency bands are country dependent and are firmware programmed at the factory to match the intended destination. The firmware setting is not accessible by the end-user.

The host product manufacturer is responsible for compliance with any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. The final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed.

The end-user manual shall include all required regulatory information/warning as shown in this manual, including: This product must be installed and operated with a minimum distance of 20 cm between the radiator and user body.

This device has got an FCC ID: 2ANDL-VWRK4. The final end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID:2ANDL-VWRK4”

This device is intended only for OEM integrators under the following conditions:

1. The antenna must be installed such that 20cm is maintained between the antenna and users, and

2. The transmitter module may not be co-located with any other transmitter or antenna.

As long as the 2 conditions above are met, further transmitter tests will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed.

Declaration of Conformity European notice

Hereby, Hangzhou Tuya Information Technology Co., Ltd declares that this module product is in compliance with essential requirements and other relevant provisions of Directive 2014/53/EU,2011/65/EU.A copy of the Declaration of conformity can be found at https://www.tuya.com

With the EU directive for waste electrical and electronic equipment (WEEE- 2012/19/EU). Instead, it should be disposed of by returning it to the point of sale, or to a municipal recycling collection point.