Analog Devices ADV8003, Руководство по оборудованию

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ADV8003 Hardware Manual
Rev. B, August 2013 356
Interrupt Description
ANIM_DONE_IRQ Used to indicate to the system controller that an animation has
completed
The following controls are available to the user for indicating interrupts on the VSP and OSD interrupts.
vsp_int_pol[1:0] , IO Map, Address 0x1A76[3:2]
This signal is used to control the VSP interrupt polarity.
Function
vsp_int_pol[1:0] Description
00  VSP interrupt is logical AND of VSP/OSD interrupts
01 VSP interrupt is inverted logical AND of VSP/OSD interrupts
10 VSP interrupt is logical OR of VSP/OSD interrupts
11 VSP interrupt is inverted logical OR of VSP/OSD interrupts
9.4. HDMI TX CORE
9.4.1. Introduction
This section describes the interrupt support provided for the HDMI Tx cores of the ADV8003. The HDMI Tx interrupts are OR’d together
and connected to the ADV8003 INT1 pin.
The ADV8003 HDMI Tx interrupt architecture provides the following types of bits:
• Interrupt status/clear bits
• Interrupt mask bits
The interrupt status/clear bits are dual purpose; when an interrupt event or condition occurs, if the interrupt mask bit is set, the status bit
gets latched to 1. The interrupt can only be cleared by writing a value of 1 to the status/clear bit.
The interrupts mask bits are used to selectively activate an interrupt bit on the interrupt out pin INT1. The interrupt output pin is active
when one or more interrupts bits are set and their corresponding interrupt mask bit is also set. Note that any given mask bit does not
affect its corresponding interrupt bit but only affects the level on the interrupt output pin INT1. The enables for all the HDMI transmitter
interrupts are described below.
9.4.2. Interrupt Architecture Overview
The following is a complete list of HDMI Tx interrupts and their descriptions:
Table 93: HDMI Tx Interrupts
Interrupt Description
hpd_int/ hpd_int_en Used to indicate the HDMI transmitter is connected to an HDMI Rx
rx_sense_int/ rx_sense_int_en Used to detect if an HDMI Rx is connected to the HDMI transmitter
vsync_int/ vsync_int_en Used to flag the falling edge on a VSync signal
edid_ready_int/ edid_ready_int_en Used to indicate if the HDMI Rx EDID is ready for reading
hdcp_authenticated_int/ hdcp_authenticated_int_en Used to indicate if the HDCP protocol has been authenticated
ri_ready_int/ ri_ready_int_en Used to indicate if the HDCP Ri is ready
hdcp_error_int/hdcp_error_int_en Used to indicate if a HDCP error has occurred
bksv_flag_int/ bksv_flag_int_en Used to indicate if the BKSV flag is set
cec_tx_ready_int/ cec_tx_ready_int_en Used to indicate that the CEC transmitter is ready
cec_tx_arbitration_lost_int/
cec_tx_arbitration_lost_int_en Used to indicate if the CEC master has lost arbitration