TMS320DM355 datasheet(81/163 Pages) TI1

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PLLDIV1(/1)

PLL

CLKMODE

CLKIN

OSCIN

PLLEN

SYSCLK1

(DDRPHY)

SYSCLKBP

(CLKOUT3)

BPDIV(/8)

PLLM

(Programmable)

Pre-DIV

(Programmable)

Post-DIV

(/1)

TMS320DM355

www.ti.com

SPRS463G – SEPTEMBER 2007 – REVISED JUNE 2010

3.6.3

PLLC2

PLLC2 provides the DDR PHY clock and CLKOUT3. Software controls PLLC2 operation through the

PLLC2 registers. The following list, Table 3-17, and Figure 3-4 describe the customizations of PLLC2 in

the DM355.

•

Provides DDR PHY clock and CLKOUT3

•

Software configurable

•

Accepts clock input or internal oscillator input (same input as PLLC1)

•

PLL pre-divider value is programmable

•

PLL multiplier value is programmable

•

PLL post-divider value is fixed to (/1)

•

Only SYSCLK[1] is used

•

SYSCLK1 divider value is fixed to (/1)

•

SYSCLKBP divider value is fixed to (/8)

•

SYSCLK1 is routed to the DDR PHY

•

SYSCLKBP is routed to the output pin CLKOUT3

•

AUXCLK is not used.

Table 3-17. PLLC2 Output Clocks

Output Clock

Used by

PLLDIV Divider

Notes

SYSCLK1

DDR PHY

Fixed divider

SYSCLKBP

CLKOUT3

Fixed divider

Figure 3-4. PLLC2 Configuration in DM355

Detailed Device Description

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