Device
PRCM
sys_clkreq
sys_nrespwron
sys_altclk
sys_clkout1
sys_32k
sys_xtalin
sys_xtalout
sys_nreswarm
1.8 V
Pullup
Reset button
To peripherals
To peripherals
sys_clkout2
sys_boot6
vdd_mpu_iva
vdd_core
LDO
VDD3
Ctrl
VDD1
VDD2
D
o
m
a
in
s
v
o
lt
a
g
e
s
sys_off_mode
Power IC
vdda_wkup_bg_bb
prcm-011
LDO
VDD4
VDD5
vdda_sram
sys_nvmode1
/i2c4_scl
sys_nvmode2
/i2c4_sda
Public Version
PRCM Environment
www.ti.com
3.3
PRCM Environment
The PRCM module receives the external reset, clock, and power signals.
shows the interface
of the PRCM module with external reset, clock, and power sources.
Figure 3-12. PRCM Functional External Interface (Detailed View)
NOTE:
In the remainder of this chapter, "power IC" refers to a peripheral power source IC that is
interfaced with the device. It receives power control commands (voltage scaling and power
switching) from the device and provides the necessary voltages and reset signals.
242
Power, Reset, and Clock Management
SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated