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RV1126B Core Board Specification

1. Feature Overview

1.1 Product Introduction

RV1126B-Core-T is a core board designed for the AIoT field. It is designed based on the Rockchip RV1126B processor and integrates four Cortex-A53 cores and an independent NEON coprocessor. It supports 4K@30fps H.264/H.265 decoding and encoding. It introduces a next-generation hardware-based ISP (image signal processor) of up to 12MP, enabling a variety of algorithm accelerators such as HDR, 3A, LSC, 3DNR, 2DNR, sharpening, dehazing, fisheye correction, gamma correction, and feature-point detection. In addition, it introduces an up to 8MP AI-ISP as a supplement to the traditional ISP, providing excellent spatial noise reduction and powerful image enhancement. The built-in NPU computing power reaches up to 3Tops and supports mixed INT4/INT8/INT16/FP16 operations. A complete Linux development package (SDK) is provided for secondary development.

Figure 1: RV1126B-Core-T Front

Figure 1: RV1126B-Core-T Front

Figure 2: RV1126B-Core-T Back

Figure 2: RV1126B-Core-T Back

1.2 RV1126B Resource Block Diagram

Figure 3: RV1126B Functional Block Diagram

Figure 3: RV1126B Functional Block Diagram

1.3 Comparison

ItemRV1126B-Core-TRV1126B-Core-TI
ProcessorRV1126BRV1126BJ
CPU4×ARM Cortex-A53@1.6GHz4×ARM Cortex-A53@1.6GHz
NPUUp to 3Tops (INT4/INT8/INT16/FP16)Up to 3Tops (INT4/INT8/INT16/FP16)
VPU4K@30fps H.264/H.265 Enc/Dec4K@30fps H.264/H.265 Enc/Dec
ISP12M ISP + 8M AI-ISP12M ISP + 8M AI-ISP
OSDebian12 / Ubuntu 22.04Debian12 / Ubuntu 22.04
Memory1/2GB DDR41/2GB DDR4
Storage64GB eMMC8/16GB eMMC
Video OutputMIPI DSI, MCU/RGB LCD, BT.656/1120MIPI DSI, MCU/RGB LCD, BT.656/1120
Video Input2-channel MIPI CSI, DVP, BT.601/656/11202-channel MIPI CSI, DVP, BT.601/656/1120
Operating Temperature-20℃ ~ +85℃-40℃ ~ +85℃

2. Pin Functions

2.1 Pin Information

RV1126B-Core-T has a total of 160 pins, which are routed out through two 80-pin board-to-board (B2B) connectors. The pitch is 0.5mm and the height is 3mm. Note: the recommended female connector model on the baseboard side is DF12NA(3.0)-80DP-0.5V(51).

Figure 4: Pin Interface Description Diagram

Figure 4: Pin Interface Description Diagram

2.2 Module Pin Definitions

※The default functions are based on the factory driver configuration. Do not change them casually.

Table 2: Connector A Pin Definitions

Pin NumberDefault Function DescriptionIO LevelMultiplexable GPIOProcessor Pin
A1RESET system reset3.3V-AL13
A3I2C4_SDA_M2 I2C4 data line1.8VGPIO4_A6_d1T21
A5I2C4_SCL_M2 I2C4 clock line1.8VGPIO4_A7_d1T22
A7I2C1_SDA_M2 I2C1 data line1.8VGPIO4_A0_dAG31
A9I2C1_SCL_M2 I2C1 clock line1.8VGPIO4_A1_dAG32
A11I2C5_SDA_M0 I2C5 data line3.3VGPIO0_C5_d1AA10
A13I2C5_SCL_M0 I2C5 clock line3.3VGPIO0_C4_d1AC8
A15FEPHY_LEDSPD_M1 FEPHY_SPD LED control pin3.3VGPIO5_D5_u1C22
A17FEPHY_LEDLINK_M1 FEPHY_LINK LED control pin3.3VGPIO0_D4_u2D13
A19SPI1_MOSI_M1 SPI1 master output, slave input3.3VGPIO3_B2_d1B16
A21SPI1_MISO_M1 SPI1 master input, slave output3.3VGPIO3_B3_d1B14
A23SPI1_CLK_M1 SPI1 clock pin3.3VGPIO3_B4_d1A14
A25SPI1_CS0n_M1 SPI1 chip select 03.3VGPIO3_B5_d1A16
A27SPI1_CS1n_M1 SPI1 chip select 13.3VGPIO3_B6_dB16
A29FEPHY_TX_P FEPHY data transmit positive--A26
A31FEPHY_TX_N FEPHY data transmit negative--A25
A33FEPHY_RX_P FEPHY data receive positive--B25
A35FEPHY_RX_N FEPHY data receive negative--B24
A37GND GND---
A39DSM_AUD_RN DSM audio output positive3.3VGPIO7_B0_d1AB14
A41DSM_AUD_RP DSM audio output negative3.3VGPIO7_B1_d1AC14
A43MIC0_N microphone input negative3.3V-AM17
A45MIC0_P microphone input positive3.3V-AM16
A47GND GND---
A49MIPI_CSI_RX1_CLK0_P MIPI_CSI1 clock positive--AL31
A51MIPI_CSI_RX1_CLK0_N MIPI_CSI1 clock negative--AM31
A53MIPI_CSI_RX1_D2_N MIPI_CSI1 data 2 negative--AL28
A55MIPI_CSI_RX1_D2_P MIPI_CSI1 data 2 positive--AL27
A57MIPI_CSI_RX1_D3_N MIPI_CSI1 data 3 negative--AM29
A59MIPI_CSI_RX1_D3_P MIPI_CSI1 data 3 positive--AM28
A61MIPI_CSI_RX1_D1_N MIPI_CSI1 data 1 negative--AK32
A63MIPI_CSI_RX1_D1_P MIPI_CSI1 data 1 positive--AL32
A65MIPI_CSI_RX1_D0_N MIPI_CSI1 data 0 negative--AJ31
A67MIPI_CSI_RX1_D0_P MIPI_CSI1 data 0 positive--AJ32
A69MIPI_CSI_CLK1 MIPI_CSI1 clock line1.8VGPIO4_B0_dAF31
A71SARADC0_IN2 ADC0_IN2pin--1A18
A73GND GND---
A75GND GND---
A77VCC5V0_SYS core board power supply pin---
A79VCC5V0_SYS core board power supply pin---
A2USB_HOST_P USB 2.0 HOST data positive--AL4
A4USB_HOST_N USB 2.0 HOST data negative--AL3
A6USB_OTG_P USB OTG data positive--AL2
A8USB_OTG_N USB OTG data negative--AM2
A10USB_OTG_ID USB OTG ID signal1.8V-1AB2
A12USB_OTG_VBUSDET USB Device voltage detection3.3V-1AA2
A14USB_OTG_TX_P USB 3.0 transmit data positive--AM4
A16USB_OTG_TX_N USB 3.0 transmit data negative--AM5
A18USB_OTG_RX_P USB 3.0 receive data positive--AL6
A20USB_OTG_RX_N USB 3.0 receive data negative--AL7
A22GND GND---
A24SDMMC0_DET TF card detection pin3.3VGPIO0_A5_uAL10
A26SDMMC0_D2 SDMMC data 21.8V/3.3VGPIO2_A2_d1AB18
A28SDMMC0_D1 SDMMC data 11.8V/3.3VGPIO2_A1_d1AA20
A30SDMMC0_CLK SDMMC clock1.8V/3.3VGPIO2_A4_d1AC20
A32SDMMC0_CMD SDMMC control command1.8V/3.3VGPIO2_A5_d1AC18
A34SDMMC0_D0 SDMMC data 01.8V/3.3VGPIO2_A0_d1AB20
A36SDMMC0_D3 SDMMC data 31.8V/3.3VGPIO2_A3_d1AA18
A38GND GND---
A40MIPI_CSI_RST1 MIPI_CSI1 reset signal1.8VGPIO4_A5_dAF32
A42MIPI_CSI_RST0 MIPI_CSI0 reset signal1.8VGPIO4_A3_d1V21
A44MIPI_CSI_PWDN1 MIPI_CSI1 PWDN1.8VGPIO4_A4_d1V22
A46MIPI_CSI_PWDN0 MIPI_CSI0 PWDN1.8VGPIO4_A2_d1Y23
A48MIPI_CSI_RX0_CLK0_P MIPI_CSI0 clock positive--AM23
A50MIPI_CSI_RX0_CLK0_N MIPI_CSI0 clock negative--AL23
A52MIPI_CSI_RX0_D2_P MIPI_CSI0 data 2 positive--AM19
A54MIPI_CSI_RX0_D2_N MIPI_CSI0 data 2 negative--AM20
A56MIPI_CSI_RX0_D3_P MIPI_CSI0data 3 positive--AL20
A58MIPI_CSI_RX0_D3_N MIPI_CSI0 data 3 negative--AL21
A60MIPI_CSI_RX0_D1_P MIPI_CSI0 data 1 positive--AL24
A62MIPI_CSI_RX0_D1_N MIPI_CSI0 data 1 negative--AL25
A64MIPI_CSI_RX0_D0_P MIPI_CSI0 data 0 positive--AM25
A66MIPI_CSI_RX0_D0_N MIPI_CSI0 data 0 negative--AM26
A68MIPI_CSI_CLK0 MIPI_CSI0 clock line1.8VGPIO4_B1_dAE31
A70SARADC0_IN0_KEY firmware update--1B20
A72PMIC_PWRON button power-on function---
A74GND GND---
A76GND GND---
A78VCC5V0_SYS core board power supply pin---
A80VCC5V0_SYS core board power supply pin---

Table 3: Connector B Pin Definitions

Pin NumberDefault Function DescriptionIO LevelMultiplexable GPIOProcessor Pin
B1UART0_RX_DBG Serial 0 receive (debug serial)3.3VGPIO0_B4_uAL9
B3UART0_TX_DBG Serial 0 transmit (debug serial)3.3VGPIO0_B3_uAM10
B5GND GND---
B7CLK_32K 32.768K clock output pin3.3VGPIO0_A2_zAL12
B9BT_WAKE_HOST Bluetooth wake-up host3.3VGPIO0_B0_d1AB4
B11WIFI_WAKE_HOST WIFI wake-up host3.3VGPIO0_B1_d1AA4
B13WIFI_REG_ON WIFI power enable3.3VGPIO0_B2_d1AC2
B15BT_RST Bluetooth reset3.3VGPIO0_A0_zAM13
B17BT_WAKE Host wake-up Bluetooth3.3VGPIO0_A7_u1AC4
B19UART2_RX_M0 serial 2 receive3.3VGPIO3_B0_dB17
B21UART2_TX_M0 serial 2 transmit3.3VGPIO3_B1_dA17
B23UART2_RTSN_M0 serial 2 request to receive3.3VGPIO3_A6_dB19
B25UART2_CTSN_M0 serial 2 request to send3.3VGPIO3_A7_dB18
B27SDIO_D3 SDIO data 33.3VGPIO3_A5_dB20
B29SDIO_D2 SDIO data 23.3VGPIO3_A4_dA20
B31SDIO_CLK SDIO clock3.3VGPIO3_A0_dB22
B33SDIO_CMD SDIO control command3.3VGPIO3_A1_dB21
B35SDIO_D0 SDIO data 03.3VGPIO3_A2_dA22
B37SDIO_D1 SDIO data 13.3VGPIO3_A3_dA23
B39GND GND3.3V--
B41ETH_RXD3_M0 Ethernet receive data 33.3VGPIO6_A4_dAB31
B43ETH_RXD2_M0 Ethernet receive data 23.3VGPIO6_A3_dAC31
B45ETH_CLK_25M_OUT_M0 Ethernet 25M clock output3.3VGPIO6_C1_dU32
B47ETH_RXCLK_M0 Ethernet receive data clock3.3VGPIO6_C3_dV31
B49ETH_TXD1_M0 Ethernet transmit data 13.3VGPIO6_B0_dW31
B51ETH_TXCLK_M0 Ethernet transmit data clock3.3VGPIO6_C2_dU31
B53ETH_TXD0_M0 Ethernet transmit data 03.3VGPIO6_A7_dY32
B55ETH_TXD2_M0 Ethernet transmit data 23.3VGPIO6_A5_dAA32
B57ETH_MDIO_M0 Ethernet MDIO pin3.3VGPIO6_B7_d1K21
B59ETH_TXD3_M0 Ethernet transmit data 33.3VGPIO6_A6_dAA32
B61ETH_MCLK_M0 Ethernet master clock signal3.3VGPIO6_B4_d1M21
B63ETH_MDC_M0 Ethernet MDC pin3.3VGPIO6_C0_dV32
B65ETH_RXCTL_M0 Ethernet receive control pin3.3VGPIO6_B5_d1M22
B67GPIO6_B6_d GPIO6_B6_d3.3VGPIO6_B6_d1M23
B69ETH_RXD0_M0 Ethernet receive data 03.3VGPIO6_B2_d1P22
B71ETH_RXD1_M0 Ethernet receive data 13.3VGPIO6_B3_d1P23
B73GPIO6_A2_d GPIO6_A2_d3.3VGPIO6_A2_dAC32
B75ETH_TXCTL_M0 Ethernet transmit control pin3.3VGPIO6_B1_d1P21
B77CAN0_RXD_M1 CAN0 receive data3.3VGPIO6_A0_d1T23
B79CAN0_TXD_M1 CAN0 transmit data3.3VGPIO6_A1_dAD32
B2UART6_RX_M0 serial 6 receive data3.3VGPIO5_B1_d1K23
B4UART6_TX_M0 serial 6 transmit data3.3VGPIO5_B0_dK31
B6UART6_CTSN_M0 serial 6 request to send3.3VGPIO5_B3_d2.00E+13
B8UART6_RTSN_M0 serial 6 request to receive3.3VGPIO5_B2_d1H23
B10GPIO5_C0_d GPIO5_C0_d3.3VGPIO5_C0_dJ32
B12GPIO5_C1_d GPIO5_C1_d3.3VGPIO5_C1_d1F22
B14GPIO5_C2_d GPIO5_C2_d3.3VGPIO5_C2_d1F23
B16UART7_RX_M0 serial 7 receive data3.3VGPIO5_B5_d1H21
B18UART7_TX_M0 serial 7 transmit data3.3VGPIO5_B4_d1H22
B20UART7_RTSN_M0 serial 7 request to receive3.3VGPIO5_B6_dJ31
B22UART7_CTSN_M0 serial 7 request to send3.3VGPIO5_B7_dH32
B24SAI1_SDI_M2 SAI data input3.3VGPIO5_C7_d1D21
B26SAI1_LRCK_M2 SAI frame clock3.3VGPIO5_C6_d1D22
B28SAI1_SCLK_M2 SAI continuous serial clock3.3VGPIO5_C5_d1D23
B30SAI1_MCLK_M2 SAI system clock output3.3VGPIO5_C3_dG31
B32SAI1_SDO_M2 SAI data output3.3VGPIO5_C4_dF31
B34I2C3_SCL_M2 I2C3 clock3.3VGPIO5_D0_dF32
B36I2C3_SDA_M2 I2C3 data3.3VGPIO5_D1_dE31
B38PWM1_CH0_M1 PWM1 channel 03.3VGPIO5_D3_dD31
B40PWM1_CH1_M1 PWM1 channel 13.3VGPIO5_D2_dE32
B42UART5_CTSN_M1 serial 5 request to send3.3VGPIO5_A7_dL31
B44UART5_RTSN_M1 serial 5 request to receive3.3VGPIO5_A6_dL32
B46UART5_RX_M1 serial 5 receive data3.3VGPIO5_A5_dM32
B48UART5_TX_M1 serial 5 transmit data3.3VGPIO5_A4_dN31
B50UART4_RX_M1 serial 4 receive data3.3VGPIO5_A3_dP31
B52UART4_TX_M1 serial 4 transmit data3.3VGPIO5_A2_dP32
B54UART4_CTSN_M1 serial 4 request to send3.3VGPIO5_A1_dR32
B56UART4_RTSN_M1 serial 4 request to receive3.3VGPIO5_A0_dR31
B58GND GND---
B60MIPI_DSI_D0_N MIPI_DSI data 0 negative--B27
B62MIPI_DSI_D0_P MIPI_DSI data 0 positive--B28
B64MIPI_DSI_CLK_N MIPI_DSI clock negative--B29
B66MIPI_DSI_CLK_P MIPI_DSI clock positive--B30
B68MIPI_DSI_D1_P MIPI_DSI data 1 positive--A29
B70MIPI_DSI_D1_N MIPI_DSI data 1 negative--A28
B72MIPI_DSI_D2_P MIPI_DSI data 2 positive--A31
B74MIPI_DSI_D2_N MIPI_DSI data 2 negative--B31
B76MIPI_DSI_D3_P MIPI_DSI data 3 positive--C32
B78MIPI_DSI_D3_N MIPI_DSI data 3 negative--B32
B80GND GND---

3. Electrical Parameters

3.1 Power Consumption Parameters

Table 6 Core Board Power Consumption Parameters

Operating ConditionCurrent (5V)Total Power Consumption
Normal Startup0.108A0.54W
Freeze Suspend Mode0.077A0.385W
CPU 100% Load (4 Cores)0.241A1.205W
CPU 80% + NPU Maximum Load0.621A3.105W

3.2 IO Level Parameters

Table 7 IO Level (3.3V)

Parameter SymbolSpecification DescriptionMinimumTypicalMaximumUnit
High-level input voltageVIH23.33.6V
Low-level input voltageVIL-0.300.8V
High-level output voltageVOH2.43.3-V
Low-level output voltageVOL-00.4V

Table 8 IO Level (1.8V)

Parameter SymbolSpecification DescriptionMinimumTypicalMaximumUnit
High-level input voltageVIH1.171.82.1V
Low-level input voltageVIL-0.300.63V
High-level output voltageVOH1.41.8-V
Low-level output voltageVOL-00.4V

4. Mechanical Dimensions

Table 9 Core Board Mechanical Dimensions

ParameterSpecification Description
Length43mm
Width38mm

Figure 5 Core Board Dimension Drawing - TOP

Figure 5 Core Board Dimension Drawing - TOP

Figure 6 Core Board Dimension Drawing - BOTTOM

Figure 6 Core Board Dimension Drawing - BOTTOM

5. Production Guidelines

5.1 Precautions When Removing

a. Because there are many BGA components, frequent insertion and removal are not recommended. Pay attention to soldering defects caused by PCB deformation.

b. The connector insertion/removal lifetime is approximately 50 cycles.

c. Hot plugging/unplugging (inserting or removing while powered on) is strictly prohibited. It may cause data loss or device damage.

5.2 Precautions for Mounting (SMT)

For mounting the connector on the baseboard, a 0.12mm-thick stencil (70% aperture ratio) is recommended.

Figure 7: Connector Soldering and Stencil Requirements

Figure 7: Connector Soldering and Stencil Requirements