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Description of the Subsystem
56
SPRUHI7A – December 2012 – Revised June 2016
Copyright © 2012–2016, Texas Instruments Incorporated
High-Definition Video Processing Subsystem (HDVPSS)
1.1.7.1
Status Before Mask
Interrupt Status Raw/Set register bit-fields show the status of interrupts before the MASK. A bit-field is set
to ‘1’ when either an event happened on the signal mentioned in the corresponding bit-field or manual
write of ‘1’ to the corresponding bit-field. Writing ‘0’ has no effect.
1.1.7.2
Status After Mask
Interrupt Status Enabled/Clear register bit-fields show the status of interrupts after the MASK. The value of
Interrupt Status Raw/Set register is transferred to Interrupt Status Enabled/Clear register for the bit-fields
with MASK off. Writing ‘1’ to a bit-field clears its value to ‘0’ and also clears the corresponding bit-field in
Interrupt Status Raw/Set register.
1.1.7.3
Mask OFF (Enable Interrupt)
Interrupt Enable/Set register is used to disable the MASK for selected signals in Interrupt Status Raw/Set
register. Writing ‘1’ to a bit-field enables corresponding interrupt to propagate to the processor. Writing ‘0’
has no effect.
1.1.7.4
Mask ON (Disable Interrupt)
Interrupt Enable/Clear register is used to enable the MASK for selected signals in Interrupt Status
Raw/Set register. Writing ‘1’ to a bit-field disables corresponding interrupt to the processor. Writing ‘0’ has
no effect.
Please note that all interrupts are disabled by default.
There are 50 interrupts that can be mapped to each INTRx at HDVPSS level and everyone of the four
INTRx has access to all the 50 available interrupts. One ‘bit’ is allocated for each interrupt in the MMR and
spread across two memory mapped registers (Register0 and Register1) to fit in all the 50 interrupts.
The source of interrupts described at HDVPSS level come from Sub-Modules of HDVPSS like VPDMA,
DEI, VIP0, etc.
shows interrupt mapping from module level to HDVPSS level.