J
7
E
2
1
E
SO
C
Crystal
32.768kHz
WKUP_LFOSC_XI
WKUP_LFOSC_XOUT
Crystal
19.2MHz
Crystal
22.5792MHz
SERDES0
SERDES1
SERDES2
SERDES4
SOM
WKUP_OSCO_IN
OSC0_IN
WKUP_OSC0_OUT
OSC0_OUT
100MHz P/N
From CP board Clock GEN
Clock
Generator
CDCI6214
R
R
R
R
R
R
R
R
PCIe Slot
(x1L)
100MHz P/N
PCIe Slot
(x2L)
100MHz P/N
Clock
Generator
CDCI6214
R
R
R
R
R
R
PCIe Slot
(M.2)
100MHz P/N
ENET
EXPANSION
125MHz P/N
100MHz P/N
100MHz P/N
100MHz P/N
Clock
Generator
CDCEL937- Q1
1.8V
25MHz
XTAL
MCU RGMII
PHY
R
R
25MHz
REF
XTAL
25MHz
REF
XTAL
25MHz
REF
XTAL
22.5792MHz
GESI/INFO
EXPANSION
(RGMII)
USB
HUB
TUSB4041
DSI TO
FPD
BRIDGE
24MHz
XTAL
R
R
XTAL
R
R
25MHz
24MHz
25MHz
CSI2
EXPANSION
25MHz
CP Board
LVL
TXLR
GESI/INFO
EXPANSION
(SPARE)
25MHz
100MHz P/N
SERDES3
RTC
Module
32.768KHz
XTAL
R
R
From CP board RTC Module
J721E EVM Hardware Architecture
40
SPRUIS4A – December 2019 – Revised May 2020
Copyright © 2019–2020, Texas Instruments Incorporated
Jacinto7 J721E/DRA829/TDA4VM Evaluation Module (EVM)
4.7
Clock
shows the J721E EVM clock architecture.
Figure 23. EVM Clock Architecture
EVM supports multiple Crystals and Clock generator to provide the reference clock input to the SoC and
EVM peripherals.