TMS320C6678

Multicore Fixed and Floating-Point Digital Signal Processor

www.ti.com

SPRS691—November 2010

 

7.8 Main PLL and PLL Controller

This section provides a description of the Main PLL and the PLL controller. For details on the operation of the PLL controller module, see the Phase Locked Loop (PLL) Controller for KeyStone Devices User Guide (literature number SPRUGV2).

Note—The Main PLL controller registers can be accessed by any master in the device.

The Main PLL is controlled by the standard PLL controller. The PLL controller manages the clock ratios, alignment, and gating for the system clocks to the device. Figure 7-23 shows a block diagram of the main PLL controller. The following paragraphs define the clocks and PLL controller parameters.

Figure 7-23 Main PLL and PLL Controller

Main PLL Controller

 

 

xM

/2

REFCLK

 

CORECLK(P|N)

 

C66x

 

 

 

 

CorePac

 

 

 

Main PLL

/x

 

 

 

 

 

 

 

SYSCLK2

 

 

/2

 

 

 

 

SYSCLK3

 

 

/3

 

 

 

 

SYSCLK4

 

 

/y

 

 

 

 

SYSCLK5

 

 

/64

 

 

 

 

SYSCLK6

 

 

 

 

To Switch Fabric,

 

/6

 

Peripherals,

 

 

SYSCLK7

Accelerators

 

 

 

 

/z

 

 

 

 

SYSCLK8

 

 

/12

 

 

 

 

SYSCLK9

 

 

/3

 

 

 

 

SYSCLK10

 

 

/6

 

 

 

 

SYSCLK11

 

ADVANCE INFORMATION

Copyright 2010 Texas Instruments Incorporated

TMS320C6678 Peripheral Information and Electrical Specifications 215

Соседние файлы в папке MAZ-DOD-MAT-2012