参数资料
型号: TMR320C2811PGFA
厂商: Texas Instruments, Inc.
元件分类: 数字信号处理
英文描述: TMS320R2811, TMS320R2812 Digital Signal Processors
中文描述: TMS320R2811,TMS320R2812数字信号处理器
文件页数: 44/147页
文件大小: 2021K
代理商: TMR320C2811PGFA
Functional Overview
44
June 2004
SPRS257
3.7
System Control
This section describes R281x oscillator, PLL and clocking mechanisms, the watchdog function and the low
power modes. Figure 3
7 shows the various clock and reset domains in R281x devices that will be discussed.
HSPCLK
PLL
X1/XCLKIN
X2
Power
Modes
Control
Watchdog
Block
C28x
CPU
P
Low-Speed Peripherals
SCI-A/B, SPI, McBSP
Peripheral
Registers
High-Speed Peripherals
EV-A/B
High-Speed Prescaler
Low-Speed Prescaler
Clock Enables
GPIO
MUX
System
Control
Registers
Peripheral
Registers
XF_XPLLDIS
ADC
Registers
12-Bit ADC
16 ADC Inputs
HSPCLK
LSPCLK
I/O
I/O
Peripheral Reset
SYSCLKOUT
XRS
Reset
GPIOs
eCAN
Peripheral
Registers
I/O
OSC
CLKIN
NOTE A: CLKIN is the clock input to the CPU. SYSCLKOUT is the output clock of the CPU. They are of the same frequency.
Figure 3
7. Clock and Reset Domains
The PLL, clocking, watchdog and low-power modes are controlled by the registers listed in Table 3
11.
A
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