AM2732_V02 datasheet(60/114 Pages) TI1

60 / 114 page

A non-crystal oscillator can also be used as the clock reference source. In this case the signal is fed to the CLKP

pin only and CLKM is grounded. Table 6-11 lists the electrical, AC timing, and phase noise requirements of the

external oscillator input signal.

Table 6-11. External Clock Mode Input Requirements

PARAMETER

SPECIFICATION

UNIT

MIN

TYP

MAX

Input Clock:

External AC-coupled sine wave or DC-

coupled square wave

Phase Noise referrenced to 40 MHz

Frequency

MHz

AC-Amplitude

700

1200

mV (pp)

DC-VIL

0.00

0.02

DC-VIH

1.40

1.95

DC-trise/fall

Phase Noise at 1 kHz

–132

dBc/Hz

Phase Noise at 10 kHz

–143

dBc/Hz

Phase Noise at 100 kHz

–152

dBc/Hz

Phase Noise at 1 MHz

–153

dBc/Hz

Duty Cycle

Freq Tolerance

–50

ppm

6.12.3 Peripheral Information

Initial peripheral descriptions and features are provided in the following sections. Additional peripheral details

and interface timing information shall be provided in a later product preview or datasheet release.

6.12.3.1 QSPI Flash Memory Peripheral

AM273x includes a Quad-Serial Peripheral Interface for external flash memory access. Flash memory can be

be utilized for many purposes including: Secondary boot-loader memory, application program memory, security

keys storage, and long-term data logs for security and error conditions.

• ROM bootloader auto identification of supported flash through flash device ID (DEVID) register

• Loopback skew cancellation for clock signal to supported faster flash interface clock rates

• Two chip-select signals to connect two external flash devices

• Memory mapped 'direct' mode and software triggered 'indirect' mode of operation for performing flash data

transfers

• 67 MHz operating clock supported

6.12.3.1.1 QSPI Timing Conditions

SPECIFIC

ATION

NUMBER

PARAMETER

MIN

TYP

MAX

UNIT

Input Conditions

Input rise time

Input fall time

Output Conditions

CLOAD

Output load capacitance

6.12.3.1.2 QSPI Timing Requirements

SPECIFIC

ATION

NUMBER

PARAMETER

(1), (2), (3)

MIN

TYP

MAX

UNIT

Q12

tsu(D-SCLK)

Setup time, D[3:0] valid before falling SCLK edge

Q13

th(SCLK-D)

Hold time, D[3:0] valid after falling SCLK edge

AM2732, AM2732-Q1

SWRS245B – DECEMBER 2021 – REVISED DECEMBER 2023

www.ti.com

Submit Document Feedback

Product Folder Links: AM2732 AM2732-Q1

AM2732 Datasheet(PDF) 60 Page - Texas Instruments

AM2732 Datasheet(HTML) 60 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL