Preliminary
Architecture
www.ti.com
6.2.6 Interrupt Requests
One external interrupt line is generated by the HDMI module: DSS_HDMI_IRQ (for more information,
see
).
lists the event flags, and their masks, that can cause internal module
interrupts that are mapped to DSS_HDMI_IRQ.
Table 6-9. HDMI Interrupt Events
Event Flag
Event Mask
Map To
Description
HDMI_WP_IRQENABLE_SET[10]
HDMI_WP_IRQSTATUS[10]
AUDIO_FIFO_SAMPLE_
Audio FIFO requests
ENABLE_SET_AUDIO_FIFO_
AUDIO_FIFO_SAMPLE_REQ_INTR
REQ_INTR
some data in IRQ mode
SAMPLE_REQ_INTR
HDMI_WP_IRQENABLE_SET[9]
HDMI_WP_IRQSTATUS[9]
AUDIO_FIFO_
ENABLE_SET_AUDIO_FIFO_
Audio FIFO overflow
AUDIO_FIFO_OVERFLOW_INTR
OVERFLOW_INTR
OVERFLOW_INTR
HDMI_WP_IRQENABLE_SET[8]
HDMI_WP_IRQSTATUS[8]
AUDIO_FIFO_
ENABLE_SET_AUDIO_FIFO_
Audio FIFO underflow
AUDIO_FIFO_UNDERFLOW_INTR
UNDERFLOW_INTR
UNDERFLOW_INTR
Time-out interrupt in
HDMI_WP_IRQSTATUS[4]
HDMI_WP_IRQENABLE_SET[4]
OCP_TIME_OUT_INTR
case the DSS_HDMI
OCP_TIME_OUT_INTR
OCP_TIME_OUT_INTR
clock is not provided
HDMI core has
generated internally an
interrupt. Software must
HDMI_WP_IRQSTATUS[0]
HDMI_WP_IRQENABLE_
CORE_INTR
read the interrupt status
CORE_INTR
SET[0] ENABLE_SET_CORE_INTR
register in the HDMI
core to identify the
interrupt event(s).
NOTE:
The HDMI_WP_IRQENABLE_SET register is used to enable the interrupt event(s), by
writing 1 in the desired bit field(s). To disable the interrupt event(s), the
HDMI_WP_IRQENABLE_CLR register must used, by writing 1 in the respective bit
field(s).
6.2.7 DMA Requests
The HDMI module generates one DMA request for audio data: DSS_HDMI_DMA (for more information,
see
).
6.2.8 HDCP Key Interface
HDCP keys are efused by TI and it will be available for HDMI module via the HDCP key Interface in
control module. If the customer wants to load specific keys the storage location is accessible via a
write-only OCP interface. The offset for HDCP key data in control module is 1D0h and the control
module base address is 4814 0000h.
6.2.9 Wrapper Functions
6.2.9.1
Wrapper Video Interface
6.2.9.1.1 Video Interface Features
•
Video slave port with 30 bit RGB data format (deep color mode)
•
Slave operational mode:
–
Synchronization signals, pixel clock, data-enable and data pixels are provided to the HDMI
module
•
CEA 861-D video timings support at 50 Hz, 59.94 Hz, and 60 Hz (low field rate 24 Hz included)
•
VESA DMT video timings support at 60 Hz (reduced blanking included)
–
10 bits per color component for 1080p/60fps and 1080p/50fps – 12 bits per color component
706
High-Definition Multimedia Interface (HDMI)
SPRUGX9 – 15 April 2011
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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