Texas Instruments OMAP5912 Reference Manual page 433

Multimedia processor device overview and architecture
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Reset Architecture
Figure 1.
Reset Distribution to Peripherals
Boot ROM
OMAP5912
conf
Warm Resets
32K WD
MPU_RST
PWRON_RESET_CORE
Cold Resets
PWRON_RESET
RTC
SPLIT_POWER
RTC_ON_NOFF
RESET_MODE
16
Initialization
Sync counter
Class 1 Modules
CHIP_RESET_IN
ULPD_RESET
ULPD
GPIO(x4)
PWL
MPUIO
Camera I/F
HDQ1_Wire
I 2 C
UART1,2,3
McBSP2
RTC power split
Note that in Figure 1, peripheral classes group peripherals based on the
source of the reset input.
The ULPD is in charge of generating two functional reset signals to the MPU
subsystem (OMAP3.2 core): cold reset (PIPORN) and warm reset
(PICHIPNRST). It is then the task of the MPU subsystem to reset processors
and peripherals. In addition, there are three input resets to the ULPD. Two of
these resets are external pins: PWRON_RESET (cold reset on ball R12) and
MPU_RST (warm reset on ball U20). The 32-kHz watchdog timer reset is a
warm reset.
DSP L2 INTH
MCSI2
MCSI1
McBSP1
OMAP3.2
DSPPER_RST
Warm Reset
Cold Reset
ARMPER_RST
Class 2 Modules
USB OTG
LPG2
PWT
FAC
DES/3DES
RNG
SPI
Class 3 Modules
GW
McBSP3
Class 2 Modules
MMC −SDIO2
OS timer
SHA1/MD5
LPG1
Compact flash
Wire
µ
controller
OCP
32K Watchdog
interconnect
MMC-SDIO1
Gptimer(x8)
Test SRAM
MC U L2 INTH
MOD_CONF_CTRL_1[23]
Exception
SPRU752B

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