Rockchip RK3326-S system on module for Smart Audio Device

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CM3326S

* Processor: Rockchip RK3326-S Quad-core Cortex-A35@1.5GHz
* RAM: 1GB/2GB/4GB
* Storage: 8/16/32/64/128GB
* Pin out: 2x UART, USB OTG, Audio I/O, LVDS/MIPI_DSI/RGB, MIPI_CSI, I2C, CIF, SDMMC, SDIO, I2S, 3x ADC, 2x SPI, GPIO, etc.
* Operating system: Android 12, Debian11, Buildroot
* Board size: 37 x 45mm
* Package: 156-pin, 1.0mm pitch

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CM3326S is a quad-core system-on-module (SoM) powered by Rockchip RK3326-S processor. With the built-in 8MP ISP, 1080p Video encoder and decoder, and many embedded powerful hardware engines, this RK3326-S module can provide an ideal embedded solution for smart audio device such as Smart Language Translator Device, Wireless Smart Sound Speaker.

RK3326-S system on module Rockchip_RK3326_SOM-CM3326-S_rear

Specifications
CPU	Rockchip RK3326-S Quad-core Cortex-A35, 1.5 GHz.
GPU	ARM G31-2EE with support for OpenGL ES 1.1/2.0/3.2, DirectX 11 FL9_3, OpenCL 2.0 and Vulkan 1.0
Memory	1/2/4GB
Storage	8/16/32/64/128GB
Supply Voltage	5V(VBUS)+4.2V(Battery), or 4.2V(Battery)
Pin out	2x UART, USB OTG, Audio I/O, LVDS/MIPI_DSI/RGB, MIPI_CSI, I2C, CIF, SDMMC, SDIO, I2S, 3x ADC, 2x SPI, GPIO, etc.
PCB Layer	8
Dimensions	45 x 37mm
Weight	6.8 gram
Package	156-pin, 1.0 mm pitch
Application	smart audio device such as Smart Language Translator Device, Wireless Smart Sound Speaker, Smart Audio Monitor.
Development Board	EM3326S
Operating system	Android12, Debian11

Indicator PCB Dimension

CM3326S-PCB-Dimension

Indicator Pin Definition

Pin	Signal	Pin	Signal	Pin	Signal	Pin	Signal
1	VCC_SYS	44	LCDC_CLK	79	CAM_PDN1	122	ADC1_HP_HOOK
2	VCC5V0_MIDU	45	LCD_RST	80	GPIO2_B4_d	123	ADC2_KEY_IN
3	GND	46	LCDC_D23	81	CAM_PDN0	124	ADC0
4	SPKP_OUT	47	LCDC_D22	82	CIF_CLKI	125	GND
5	SPKN_OUT	48	LCDC_D21	83	CIF_HREF	126	REF_CLKO/GPIO_A0_d
6	HPL	49	LCDC_D20	84	CIF_D2	127	PHONE_DET
7	HPR	50	LCDC_D19	85	CIF_D3	128	RESET
8	HP_SNS	51	LCDC_D18	86	CIF_D4	129	PWM0/GPIO0_B7_d
9	MIC2_IN	52	LCDC_D17	87	CIF_D5	130	GND
10	MIC1_IN	53	LCDC_D16	88	CIF_D6	131	SDIO_D3
11	GND	54	LCDC_D15	89	CIF_D7	132	SDIO_D2
12	PMIC_PWRON	55	LCDC_D14	90	CIF_D8	133	SDIO_D1
13	VBUS	56	LCDC_D13	91	CIF_D9	134	SDIO_D0
14	VBUS	57	LCDC_D12	92	GND	135	SDIO_CMD
15	GND	58	LCDC_D9	93	MIPI_CSI_D3P	136	SDIO_CLK
16	VCC_BAT+	59	LCDC_D7	94	MIPI_CSI_D3N	137	GND
17	VCC_BAT+	60	LCDC_D6	95	MIPI_CSI_D2P	138	VCC_RTC
18	GND	61	LCDC_D2	96	MIPI_CSI_D2N	139	HOST_WAKE_BT
19	SNSN	62	LCDC_D0	97	MIPI_CSI_D1P	140	BT_WAKE_HOST
20	SNSP	63	BT_PCM_IN	98	MIPI_CSI_D1N	141	WIFI_REG_ON
21	GND	64	BT_PCM_OUT	99	MIPI_CSI_D0P	142	WIFI_WAKE_HOST
22	TS	65	BT_PCM_SYNC	100	MIPI_CSI_D0N	143	BT_REG_ON
23	LCDC_BL_PWM	66	BT_PCM_CLK	101	MIPI_CSI_CLKP	144	I2C1_SDA
24	LCD_PWREN	67	UART1_CTS	102	MIPI_CSI_CLKN	145	I2C1_SCL
25	GPIO1_B7_d/SPI0_CLK	68	UART1_RTS	103	GND	146	GPIO1_B0_u
26	GPIO1_B5_d/SPI0_MISO	69	UART1_RXD	104	USB_OTG_DM	147	CLKOUT_32K
27	GPIO1_B4_d/SPI0_MOSI	70	UART1_TXD	105	USB_OTG_DP	148	VCC_3V0
28	GPIO1_B6_d/SPI0_CSN	71	GPIO0_B2/UART0_TX	106	USB_DET	149	VCC_SD
29	SPI1_MISO	72	GPIO0_B3/UART0_RX	107	USB_OTG_ID	150	GND
30	SPI1_CLK	73	GPIO3_A1_d	108	GND	151	VCC2V8_DVP
31	SPI1_MOSI	74	GND	109	SDMMC0_D3	152	GND
32	SPI1_CSN0	75	CAM_CLKO	110	SDMMC0_D2	153	LDO1_1V8
33	GND	76	CIF_VSYNC	111	SDMMC0_CMD	154	VCC1V8_DVP
34	LVDS/MIPI_TXD0N/LCDC_D11	77	I2C2_SDA_CAM	112	SDMMC0_D1	155	GND
35	LVDS/MIPI_TXD0P/LCDC_D8	78	I2C2_SCL_CAM	113	SDMMC0_D0	156	VDD1V5_DVP
36	LVDS/MIPI_TXCLKN/LCDC_D4			114	SDMMC0_CLK
37	LVDS/MIPI_TXCLKP/LCDC_D3			115	SDMMC0_DET
38	LVDS/MIPI_TXD2N/LCDC_VSYNC			116	I2S_LRCK_TXRX
39	LVDS/MIPI_TXD2P/LCDC_D5			117	I2S_SCLK
40	LVDS/MIPI_TXD3N/LCDC_HSYNC			118	I2S_MCLK
41	LVDS/MIPI_TXD3P/LCDC_DEN			119	I2S_SDO
42	LVDS/MIPI_TXD1N/LCDC_D1			120	I2S_SDI
43	LVDS/MIPI_TXD1P/LCDC_D10			121	GND

OS	Item	Feature	Description
Android 12	Boot	U-Boot 2017.09	rk3326_loader_v2.06.135.bin
	Kernel	Version	4.19.232
	Drivers	Audio	Headphone I/O, Speaker
		SD card	SD3.0
		USB OTG	USB2.0 OTG (Multiplexed with USB Host/Ethernet/4G model). Support download, adb
		USB HOST	2x USB2.0 Host
		Ethernet	USB to Ethernet, 10/100M
		Camera	MIPI camera
		WiFi	802.11b/g/n, 2.4G
		Bluetooth	Bluetooth 4.2
		Serial Port	Debug serial port (UART2. Multiplexed with SD)
		eMMC	eMMC5.1
		IR	HS0038B, 38 KHz
		4G	EC20 LTE
		LCD	MIPI LCD, 1280*800
		RTC	Support
		UART	2x UART
		RS485	UART(UART0) to RS485
		SPI	2x SPI
	Embedded GUI	Android12	Clock, Gallery, Calculator, Camera, Files, Video, Music etc.
	Cross-compiler Environment	ubuntu-18.04, openjdk version "11.0.4"
	Debug Tools	SecureCRT, AndroidTool.exe, ADB

OS	Item	Feature	Description
Debian11	Boot	U-Boot 2017.09	rk3326_loader_v2.08.135.bin
	Kernel	version	Linux version 5.10.160
	Drivers	Audio	Headphone I/O, Speaker
		SD card	SD3.0
		USB OTG	USB2.0 OTG (Multiplexed with USB Host/Ethernet/4G model). Support download, adb
		USB HOST	2x USB2.0 Host
		Ethernet	USB to Ethernet, 10/100M
		Camera	MIPI camera
		WiFi	802.11b/g/n, 2.4G
		Bluetooth	Bluetooth 4.2
		Serial Port	Debug serial port (UART2. Multiplexed with SD)
		eMMC	eMMC5.1
		IR	HS0038B, 38 KHz
		4G	EC20 LTE
		LCD	MIPI LCD, 1280 * 480
		RTC	Support
		UART	2x UART
		RS485	UART(UART0) to RS485
		GPS	Support
		SPI	2x SPI
	Embedded GUI	Debian11	Trash, Filesystem, Home
	Cross-compiler Environment	ubuntu-20.04
	Debug Tools	RKDevTool.exe, SecureCRT, ADB

OS	Item	Feature	Description
Buildroot	Boot	U-Boot 2017.09	rk3326_loader_v2.08.135.bin
	Kernel	Version	Linux version 5.10.160
	Drivers	Audio	Headphone I/O, Speaker
		SD card	SD3.0
		USB OTG	USB2.0 OTG (Multiplexed with USB Host/Ethernet/4G model). Support download, adb.
		USB HOST	2x USB2.0 Host
		Ethernet	USB to Ethernet, 10/100M
		Camera	MIPI camera
		WiFi	802.11b/g/n, 2.4G
		Bluetooth	Bluetooth 4.2
		Serial Port	Debug serial port (UART2. Multiplexed with SD)
		eMMC	eMMC5.1
		IR	HS0038B, 38 KHz
		4G	EC20 LTE
		LCD	MIPI LCD, 1280 * 800
		RTC	Support
		UART	2x UART
		RS485	UART(UART0) to RS485
		GPS	Support
		SPI	2x SPI
	Embedded GUI	QT	qplayer, chromium browser, multivideoplayer, qcamera
	Cross-compiler Environment	ubuntu-20.04
	Debug Tools	RKDevTool.exe, SecureCRT, ADB