DRA752ABC datasheet(189/443 Pages) TI2

189 / 443 page

DEVICE

clkout1

To quartz (from oscillator output).

resetn

rstoutn

External Reference Clock [3:0].

For Audio and other Peripherals

xref_clk1

sysboot[15:0]

From quartz (32 kHz) or from CMOS square clock source (32 kHz).

From quartz (19.2, 20 or 27 MHz)

or from CMOS square clock source (19.2, 20 or 27MHz).

Boot Mode Configuration

xi_osc1

Warm reset output.

Device reset input.

porz

Power ON Reset.

xi_osc0

xo_osc0

xo_osc1

From quartz (range from

MHz)

or from CMOS square clock source(range from

MHz).

19.2 to 32

12 to 38.4

To quartz (from oscillator output).

clkout2

clkout3

xref_clk0

xref_clk2

xref_clk3

Output clkout[3:1] clocks come from:

• Either the input system clock and alternate clock (xi_osc0 or xi_osc1)

• Or a CORE clock (from CORE output)

• Or a 192-MHz clock (from PER DPLL output).

rtc_osc_xi_clkin32

To quartz (from oscillator output).

rtc_osc_xo

189

DRA756, DRA755, DRA754, DRA752

DRA751, DRA750, DRA746, DRA745, DRA744

www.ti.com

SPRS950F – DECEMBER 2015 – REVISED MAY 2019

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Product Folder Links: DRA756 DRA755 DRA754 DRA752 DRA751 DRA750 DRA746 DRA745 DRA744

Clock Specifications

Figure 6-1. Clock Interface

6.1

Input Clock Specifications

6.1.1

Input Clock Requirements

•

The source of the internal system clock (SYS_CLK1) could be either:

–

A CMOS clock that enters on the xi_osc0 ball (with xo_osc0 left unconnected on the CMOS clock

case).

–

A crystal oscillator clock managed by xi_osc0 and xo_osc0.

•

The source of the internal system clock (SYS_CLK2) could be either:

–

A CMOS clock that enters on the xi_osc1 ball (with xo_osc1 left unconnected on the CMOS clock

case).

–

A crystal oscillator clock managed by xi_osc1 and xo_osc1.

•

The source of the internal system clock (FUNC_32K_CLK) could be either:

–

A CMOS clock that enters on the rtc_osc_xi_clkin32 ball and supports external LVCMOS clock

generators

–

A crystal oscillator clock managed by rtc_osc_xi_clkin32 and rtc_osc_xo.

DRA752ABC Datasheet(PDF) 189 Page - Texas Instruments

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