Specifications

ROCK Pi 4C Plus Product Brief
GPIO number Function2 Function1 GPIO Pin# Pin# GPIO Function1 Function2 GPIO number
150 PWM1 GPIO4_C6 13 14 GND
149 SPDIF_TX GPIO4_C5 15 16 GPIO4_D2 154
+3.3V 17 18 GPIO4_D4 156
40 UART4_TXD SPI1_TXD GPIO1_B0 19 20 GND
39 UART4_RXD SPI1_RXD GPIO1_A7 21 22 GPIO4_D5 157
41 SPI1_CLK GPIO1_B1 23 24 GPIO1_B2 SPI1_CSn 42
GND 25 26 ADC_IN0
64 I2C2_SDA GPIO2_A0 27 28 GPIO2_A1 I2C2_CLK 65
74 I2C6_SCL SPI2_TXD GPIO2_B2 29 30 GND
73 I2C6_SDA SPI2_RXD GPIO2_B1 31 32 GPIO3_C0 SPDIF_TX UART3_CTSn 112
76 SPI2_CSn GPIO2_B4 33 34 GND
133 I2S1_LRCK_TX GPIO4_A5 35 36 GPIO4_A4 I2S1_LRCK_RX 132
158 GPIO4_D6 37 38 GPIO4_A6 I2S1_SDI 134
GND 39 40 GPIO4_A7 I2S1_SDO 135
5.2 eMMC Socket
ROCK Pi 4C Plus oers a high speed eMMC socket for eMMC modules as OS and data storage. The
eMMC socket is compatible with industrial common used pinout and form factor.
5.3 Camera and Display Interfaces
The ROCK Pi 4C Plus has 1x 2‑lane MIPI CSI Camera and 1x 4‑lane MIPI DSI Display connector. The
connector pitch is 0.3mm, for camera/display module with 0.5mm pitch FPC, a 0.3mm to 0.5mm FPC
cable is required.
5.4 USB
The ROCK Pi 4C Plus has 2x USB2 HOST, 1x USB3 HOST and 1x USB3 OTG type‑A sockets. Downstream
USB current is limited to approximately 2.8A in aggregate over the four sockets.
5.5 HDMI
The ROCK Pi 4C Plus has 2x HDMI ports, one support CEC and HDMI 2.0 with resolutions up to 4Kp60,
one support CEC
5.6 Audio Jack
The ROCK Pi 4C Plus supports near‑CD‑quality analogue audio output via a 4‑ring 3.5mm headphone
jack.
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