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模块时钟

模块名称 总线时钟 模块时钟源 模块时钟极限频率 备注
E907 CORE - PLL_INT0 504MHz -
E907 PLIC - PLL_INT0÷2 252MHz -
E907 CLINT - PLL_INT0÷2 252MHz -
E907 DM - CLK_24M 24MHz -
AXI AXI - 240MHz -
AHB AHB - 240MHz -
APB0 APB0 - 100MHz -
APB1 APB1 - 24MHz -
BROM AXI - - -
SRAM AXI - - -
AHB Matrix AHB - - -
DMA AHB - - -
CE AHB PLL_INT1 200MHz -
USB DEV AHB - - -
USB PHY - CLK_24M - -
EMAC AHB PLL_INT1 50MHz -
XSPI AHB PLL_FRA0 400MHz -
SPI0 AHB PLL_FRA0 100MHz -
SPI1 AHB PLL_FRA0 100MHz -
SPI2 AHB PLL_FRA0 100MHz -
SPI3 AHB PLL_FRA0 100MHz -
CORDIC AHB - - -
HCL AHB - - -
PBUS AHB - - -
SYSCFG APB0 CLK_24M 24MHz -
CMU APB0 - - -
SPI_ENC APB0 HCLK - -
PWMCS APB0 PLL_INT1 200MHz -
ADC APB0 PLL_INT1 100MHz -
AXICFG APB0 - - -
GPIO APB0 - - -
UART0 APB0 PLL_INT1 60MHz -
UART1 APB0 PLL_INT1 60MHz -
UART2 APB0 PLL_INT1 60MHz -
UART3 APB0 PLL_INT1 60MHz -
UART4 APB0 PLL_INT1 60MHz -
UART5 APB0 PLL_INT1 60MHz -
UART6 APB0 PLL_INT1 60MHz -
UART7 APB0 PLL_INT1 60MHz -
TA-IF APB0 PLL_INT1 240MHz -
EDT-IF APB0 PLL_INT1 240MHz -
BISS-IF APB0 PLL_INT1 240MHz -
SDFM APB0 PLL_INT1 240MHz -
WDOG APB1 CLK_32K 32KHz -
WRI APB1 CLK_24M 24MHz -
SID APB1 CLK_24M 24MHz -
GTC APB1 - - -
I2C0 APB1 - - -
I2C1 APB1 - - -
I2C2 APB1 - - -
I2C3 APB1 - - -
CAN0 APB1 - - -
CAN1 APB1 - - -
PWM APB1 PLL_INT1 100MHz -
ADCIM APB1 PLL_INT1 100MHz -
THS APB1 - - -
CPM APB1 - - -
模块名称 总线时钟 模块时钟源 模块时钟极限频率 备注
C906 CORE - PLL_INT0 504MHz 600MHz@1.2V
AXI AXI - 240MHz -
AHB AHB - 240MHz -
APB0 APB0 - 100MHz -
APB1 APB1 - 24MHz -
AHB Matrix AHB0 - - -
BROM AHB0 - - -
SRAM AHB0 - - -
DMA AHB0 - - -
CE AHB0 PLL_INT1 200MHz -
USB DEV AHB0 - - -
USB HOST0 AHB0 - - -
USB HOST1 AHB0 - - -
USB PHY0 - OSC_24M - -
USB PHY1 - OSC_24M - -
GMAC0 AHB0 PLL_INT1 50MHz -
GMAC1 AHB0 PLL_INT1 50MHz -
QSPI0 AHB0 PLL_FRA0 100MHz -
QSPI1 AHB0 PLL_FRA0 100MHz -
QSPI2 AHB0 PLL_FRA0 100MHz -
QSPI3 AHB0 PLL_FRA0 100MHz -
SDMC0 AHB0 PLL_FRA0 200MHz -
SDMC1 AHB0 PLL_FRA0 200MHz -
SDMC2 AHB0 PLL_FRA0 200MHz -
PBUS AHB0 - - -
SYSCFG APB0 OSC_24M 24MHz -
CMU APB0 - - -
CMT (SIM) APB0 - - -
SPI ENC APB0 PLL_INT1 200MHz -
PWMCS APB0 PLL_INT1 200MHz -
PSADC APB0 - - -
DDR CTL APB0 - - -
MTOP APB0 - - -
DDR PHY APB0 PLL_FRA0 336MHz -
I2S0 APB0 PLL_FRA1 26MHz -
I2S1 APB0 PLL_FRA1 26MHz -
AUDIO APB0 PLL_FRA1 26MHz -
LCD APB0 PLL_FRA2 800MHz DISP_PIXCLK:200MHz
LVDS APB0 PLL_FRA2 1000MHz DISP_PIXCLK:200MHz
MIPI DSI APB0 PLL_FRA2 1200MHz DISP_PIXCLK:200MHz
DVP APB0 PLL_INT1 200MHz -
DE APB0 PLL_INT1 200MHz DISP_PIXCLK:200MHz
GE APB0 PLL_INT1 200MHz -
VE TBD PLL_INT1 200MHz -
WDOG APB1 CLK_32K 30KHz -
WRI APB1 OSC_24M 24MHz -
SID APB1 OSC_24M 24MHz -
RTC APB1 RTC domain - -
GTC APB1 - - -
GPIO APB1 - - -
PMT (SIM) APB1 - - -
UART0 APB1 PLL_INT1 60MHz -
UART1 APB1 PLL_INT1 60MHz -
UART2 APB1 PLL_INT1 60MHz -
UART3 APB1 PLL_INT1 60MHz -
UART4 APB1 PLL_INT1 60MHz -
UART5 APB1 PLL_INT1 60MHz -
UART6 APB1 PLL_INT1 60MHz -
UART7 APB1 PLL_INT1 60MHz -
I2C0 APB1 - - -
I2C1 APB1 - - -
I2C2 APB1 - - -
I2C3 APB1 - - -
CAN0 APB1 - - -
CAN1 APB1 - - -
PWM APB1 PLL_INT1 100MHz -
ADCIM APB1 OSC_24M 24MHz -
GPAI APB1 - - -
RTP APB1 - - -
THS APB1 - - -
CIR APB1 - - -
UART 在 PLL_INT1=1.2GHz 下波特率精度
表 1. UART 波特率与误差率
设定波特率 实际波特率 波特率偏差 CMU 除频 Over sampling Clock source UART 除频
300 300 0 25 16 48000000 10000
600 600 0 25 16 48000000 5000
1200 1200 0 25 16 48000000 2500
2400 2400 0 25 16 48000000 1250
4800 4800 0 25 16 48000000 625
9600 9615 0.16 25 16 48000000 312
14400 14423 0.16 25 16 48000000 208
19200 19230 0.16 25 16 48000000 156
38400 38461 0.16 25 16 48000000 78
57600 57692 0.16 25 16 48000000 52
115200 115384 0.16 25 16 48000000 26
230400 230769 0.16 25 16 48000000 13
380400 378787 -0.42 22 16 54545454 9
460800 462963 0.47 27 16 44444444 6
921600 925925 0.47 27 16 44444444 3
1000000 1000000 0 25 16 48000000 3
1152000 1136363 1.36 22 16 54545454 3
1500000 1500000 0 25 16 48000000 2
2500000 2500000 0 30 16 40000000 1
3000000 3000000 0 25 16 48000000 1