P
R
M
re
s
e
t
m
a
n
a
g
e
r
Device
Reset sources
sys_nrespwron
sys_nreswarm
MPU watchdog
(WDTIMER2)
PRCM
registers
(software sources)
MPU_WD_RST
BAD_DEVICE_RST
DPLL3_DOM_RST
DPLL2_DOM_RST
DPLL1_DOM_RST
USBHOST_DOM_RST
EMU_DOM_RST
DSS_DOM_RST
CAM_DOM_RST
PER_DOM_RST
CORE_DOM_RST
SGX_DOM_RST
IVA2_DOM_RST
NEON_DOM_RST
MPU_DOM_RST
DPLL3_SW_RST
GLOBAL_SW_RST
IVA2_SW_RST3
IVA2_SW_RST2
IVA2_SW_RST1
Reset sources
Domain power
manager FSMs
Voltage control
FSM
VDD2_VM_RST
VDD1_VM_RST
CORE_DOM_RET_RST
PRCM
*
presents the boundary of the PRCM
The green region in the figure re
.
prcm-020
device type
decoder
Efuse
PER_DOM_RET_RST
DPLL4_DOM_RST
DPLL5_DOM_RST
Public Version
www.ti.com
PRCM Functional Description
Figure 3-21. Reset Sources Overview
3.5.1.3.1 Global Reset Sources
lists the global reset sources of the device. The global reset source signals received by the
reset manager trigger the reset of all the device modules. For all hardware reset signals, the source of the
reset is identified; for the software reset signals, the reset triggering bit is identified.
Table 3-7. Global Reset Sources
Type
(1)
Name
Source/Control
Description
H/C
sys_nrespwron
Input pin
The entire device is reset on power up.
H/C
BAD_DEVICE_RST
PRCM
Asserted when during the power-up
sequence the device is identified as bad,
after reading eFuses
H/W
sys_nreswarm
Bidirectional pin
External hardware warm reset
(1)
H = Hardware reset, S = Software reset, C = Cold reset, W = Warm reset
253
SWPU177N – December 2009 – Revised November 2010
Power, Reset, and Clock Management
Copyright © 2009–2010, Texas Instruments Incorporated