模块时钟

5 Mar 2024

Read time: 8 minute(s)


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	-
EDAT-IF	APB0	PLL_INT1	240MHz	-
BIS-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