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PMIC_ RESET _IN
PMIC
Table 8
summarizes the reset signals.
Reset Type
Power-On Reset Input
(as whole system reset)
Warm Reset Input
PMIC Power-On Reset Input
RTC Power-On Reset Input
Reset Output
3.2.1
Wakeup Signals
Wakeup0 is connected to on-board CAN transceiver, and is used for multi-function. Under normal
operating modes, the pin can be configured/used as DCAN receive input. When placed in RTC sleep
mode, the pin can be configured as to trigger wakeup events from CAN bus.
Wakeup 1 is connected to PMIC, and is used for multi-function. Under normal operating modes, the pin
can be configured as input to receive interrupt events from PMIC. When placed in RTC sleep mode, the
pin can be configured as to trigger wakeup events from PMIC.
Wakeup 2 is connected to both LCD and expansion connectors. Under normal operation modes, the pin is
configured as input to receive interrupts from LCD touch panel controller.
Wakeup 3 is connected to expansion connector, and can be used as either wakeup event or general
purpose input.
NOTE: ES1.0 Rev E system and older supported an on-board pushbutton to generate wakeup
event. Depending on revision, the button was connected to either Wakeup1 or Wakeup2.
SPRUI50 – February 2016
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EMU_ RSTn
CPU_ RESETn
CPU_ POR_ RESETn
PCI_ PORz
PMIC_ RESET _ OUT
PMIC_ RESWARMN
RTC_ PORZ
Figure 3. Reset Structure
Table 8. Reset signals structure
Reset Signal Sources
CPU_POR_RESETn
PCI_PORz
PMIC_RESET_OUT
CPU_RESETn
EMU_RSTn
PMIC_RESET_IN
RTC_PORZ
RSTOUTn
APP_BD_PORz
PMIC_NRESWARM
Copyright © 2016, Texas Instruments Incorporated
RESETN
( Warm Reset )
SOC
PORz
( Cold Reset )
RTC_ PORZ
RSTOUT
RSTOUTn
Comments
PORn push button reset
PCIe inbound reset
Power on reset from PMIC
Warm push button reset
Reset from Emulator
PMIC Power on reset input
RTC block power on reset
Reset output from processor to system
Reset to expansion connector
Warm Reset input to PMIC
Hardware
System
11
DRA7x EVM CPU Board
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