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AM652X Datasheet(PDF) 143 Page - Texas Instruments

No. de pieza AM652X
Descripción Electrónicos  Sitara Processors
PDF  299 Pages
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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AM652X Datasheet(HTML) 143 Page - Texas Instruments

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WKUP_OSC0_XI
CK0
CK1
CK1
VSS
Device
WKUP_OSC0_XO
WKUP_OSC0_XI
NC
SPRSP08_CLK_02
NC
PCB Ground
143
AM6548, AM6528, AM6546
AM6526, AM6527
www.ti.com
SPRSP08E – NOVEMBER 2017 – REVISED OCTOBER 2018
Submit Documentation Feedback
Product Folder Links: AM6548 AM6528 AM6546 AM6526 AM6527
Specifications
Copyright © 2017–2018, Texas Instruments Incorporated
5.11.4.1.2 WKUP_OSC0 LVCMOS Digital Clock Source
Figure 5-13 shows the recommended oscillator connections when WKUP_OSC0 is connected to an
LVCMOS square-wave digital clock source The 1.8-V LVCMOS-Compatible clock source is connected to
the WKUP_OSC0_XI pin. In this mode of operation, the WKUP_OSC0_XO pin is left unconnected and
should not be used to source any external components.
Figure 5-13. 1.8-V LVCMOS-Compatible Clock Input
Table 5-18 summarizes the WKUP_OSC0 input clock electrical characteristics
Table 5-18. WKUP_OSC0 Switching Characteristics – Crystal Mode
NAME
DESCRIPTION
MIN
TYP
MAX
UNIT
f
Frequency
19.2, 20, 24, 25, 26, 27
MHz
CIN
Input capacitance
2.184
2.384
2.584
pF
IIN
Input current (3.3V mode)
4
6
10
µA
Table 5-19 details the WKUP_OSC0 input clock timing requirements.
Table 5-19. WKUP_OSC0 Input Clock Timing Requirements
NAME
DESCRIPTION
MIN
TYP
MAX
UNIT
CK0
1 /
tc(WKUP_OSC0_XI)
Frequency, WKUP_OSC0_XI
19.2, 20, 24, 25, 26, 27
MHz
CK1
tw(WKUP_OSC0_XI)
Pulse duration, WKUP_OSC0_XI low or high
0.45 ×
tc(WKUP_OSC0_XI)
0.55 ×
tc(WKUP_OSC0_XI)
ns
tj(WKUP_OSC0_XI)
Period jitter, WKUP_OSC0_XI
0.01 ×
tc(WKUP_OSC0_XI)
ns
tR(WKUP_OSC0_XI)
Rise time, WKUP_OSC0_XI
5
ns
tF(WKUP_OSC0_XI)
Fall time, WKUP_OSC0_XI
5
ns
tj(WKUP_OSC0_XI)
Frequency accuracy,
WKUP_OSC0_XI
Ethernet RGMII and RMII
not used
±100
ppm
Ethernet RGMII and RMII
using derived clock
±50
Figure 5-14. WKUP_OSC0_XI Input Clock



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