Bouffalo Lab BL808
Bouffalo Lab BL808 is a 64-bit / 32-bit RISC-V SoC with 3 RISC-V Cores:
- D0 Multimedia Core: T-Head C906 480 MHz 64-bit RISC-V CPU
RV64IMAFCV
Level 1 Instruction and Data Cache (Harvard architecture)
Sv39 Memory Management Unit
jTLB (128 entries)
AXI 4.0 128-bit master interface
Core Local Interrupt (CLINT) and Platform-Level Interrupt Controller (PLIC)
80 External Interrupt Sources
BHT (8K) and BTB
RISC-V PMP (8 configurable areas)
- M0 Wireless Core: T-Head E907 320 MHz 32-bit RISC-V CPU
RV32IMAFCP
32-bit / 16-bit Mixed Instruction Set
RISC-V Machine Mode and User Mode
32 x 32-bit Integer General Purpose Registers (GPR)
32 x 32-bit / 64-bit Floating-Point GPRs
AXI 4.0 main device interface and AHB 5.0 peripheral interface
Instruction and Data Cache
- LP Low Power Core: T-Head E902 150 MHz 32-bit RISC-V CPU
RV32E[M]C
RAM: Embedded 64 MB PSRAM
Wireless: 2.4 GHz 1T1R WiFi 802.11 b/g/n, Bluetooth 5.2, Zigbee
Ethernet: 10 / 100 Mbps
USB: USB 2.0 OTG
Audio: Microphone and Speaker
Video Input: Dual-lane MIPI CSI
Peripherals: UART, SPI, I2C, PWM, SDH, EMAC, USB
Peripheral Support
The following list indicates the state of peripherals’ support in NuttX:
Peripheral |
Support |
NOTES |
|---|---|---|
GPDAC |
No |
|
DMA |
No |
|
EMAC |
No |
|
GPADC |
Yes |
|
GPIO |
Yes |
|
I2C |
No |
|
I2S |
No |
|
PWM |
No |
|
SPI |
Yes |
|
Timers |
Yes |
|
UART |
Yes |
|
USB |
No |
|
Watchdogs |
Yes |