
Public Version
SCM Functional Description
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NOTE:
The OBSERVABILITYDISABLE and WKUPOBSERVABILITYDISABLE bits are of the type
(R/OCO) to which the following rules apply:
•
Write actions that do not change the bit reset value are not considered.
•
The first write action that changes the bit reset value is considered, but any subsequent
write actions are ignored. No more write actions are effective until the next POR.
NOTE:
To disable observability for all hw_dbg I/Os (that is, drive the external observability outputs
to 0), observability of the CORE and WKUP domains must be disabled. Disabling only
wkup_observability is not sufficient.
13.4.10.2 Observability Tables
This section gives information about all modules and features in the high-tier device. To check the
availability of modules and features, see
, Device Family. Unavailable module and feature
pins are not functional.
through
define the mapped internal signals for each OBSMUX and
WKUPOBSMUX value.
Table 13-30. Internal Signals Multiplexed on OBSMUX0
Out Signal Name
Muxed Signal Name
OBSMUX0 Field
Description
High State
Low State
CONTROL.
[22:16] (dec)
CORE_OBSMUX0
(1)
tie_low
0
-
–
-
CM_96_FCLK
1
96-MHz functional clock of the
–
–
CM module
CM_32K_CLK
2
32-kHz functional clock of the
–
–
CM module
PRCM_DPLL3_enable
3
Signal used to enable DPLL3.
DPLL is
DPLL is
enabled.
disabled.
PRCM_CAM_domainFreeze
4
Indicates whether the CAM
Domain is
Domain is not
domain is frozen
frozen.
frozen.
PRCM_NEON_forceWakeup
5
Indicates whether a wakeup of
Wakeup is
Wakeup is
the NEON domain is forced
forced.
not forced.
PRCM_COREL4_domainNre
6
Indicates whether the CORE_L4
Domain is not Domain is
ady
domain is ready. In other words,
ready.
ready.
is domain transition ongoing?
PRCM_WKUP_domainNread
7
Indicates whether the WKUP
Domain is not Domain is
y
domain is ready. In other words,
ready.
ready.
is domain transition ongoing?
PRCM_STATE_IS_OFF_IVA
8
Indicates to the global power
FSM state is
FSM state is
2
manager FSM that the IVA2
OFF.
not OFF.
domain power state is ON
Reserved
(10:9)
–
–
–
SAD2D_MSTANDBY
11
SAD2D Mstandby assertion
–
–
Reserved
12
–
–
–
SAD2D_GICLK
13
Interface clock of the L4
–
–
interconnect in the SAD2D
domain
Reserved
(16:14)
–
–
–
sdma_PI_DMAREQ
(87:17)
DMA requests lines mapped to
–
–
the system DMA module. See
, DMA, for more
information about the system
DMA request mapping.
(1)
0x00 in WKUPOBSMUX0 field CONTROL.CONTROL_WKUP_DEBOBS_0[4:0]
2488
System Control Module
SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated