參數(shù)資料
型號: TMS320C6727B_07
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號處理
英文描述: Floating-Point Digital Signal Processors
中文描述: 浮點數(shù)字信號處理器
文件頁數(shù): 103/116頁
文件大?。?/td> 999K
代理商: TMS320C6727B_07
www.ti.com
4.18 Phase-Locked Loop (PLL)
4.18.1 PLL Device-Specific Information
1
0
PLLEN
(PLL_CSR[0])
Divider
D0
(/1 to /32)
PLLREF
PLL
x4 to x25
PLLOUT
Divider
D1
(/1 to /32)
SYSCLK1
CPU and Memory
Divider
D2
(/1 to /32)
SYSCLK2
Peripherals and dMAX
Divider
D3
(/1 to /32)
SYSCLK3
EMIF
AUXCLK
McASP0,1,2
Clock
Input
from
CLKIN or
OSCIN
TMS320C6727B, TMS320C6726B, TMS320C6722B, TMS320C6720
Floating-Point Digital Signal Processors
SPRS370C–SEPTEMBER 2006–REVISED OCTOBER 2007
The C672x DSP generates the high-frequency internal clocks it requires through an on-chip PLL.
The input to the PLL is either from the on-chip oscillator (OSCIN pin) or from an external clock on the
CLKIN pin. The PLL outputs four clocks that have programmable divider options.
Figure 4-43
illustrates
the PLL Topology.
The PLL is disabled by default after a device reset. It must be configured by software according to the
allowable operating conditions listed in
Table 4-42
before enabling the DSP to run from the PLL by setting
PLLEN = 1.
Figure 4-43. PLL Topology
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Peripheral and Electrical Specifications
103
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