ADV8003 Hardware Manual
Rev. B, August 2013
349
9.
INTERRUPTS
The ADV8003 has a comprehensive set of interrupt registers located in the IO Map and HDMI Main Maps of both the Serial Video Rx
and HDMI transmitters. These interrupts can be used to indicate certain events in the Serial Video Rx section, OSD, and VSP, and also the
HDMI Tx.
The ADV8003 features several interrupt controllers which handle three separate interrupt signals. These three interrupt signals are
available on the interrupt pins INT0, INT1, and INT2. There is one interrupt available for the Serial Video Rx inputs, which is available for
use on the interrupt INT2 pin. There is a shared interrupt available for both HDMI transmitters on INT1. There is also an interrupt pin
made available to be used for a number of interrupts in the OSD core. These are available on INT0.
Note
: The dual transmitter variants of ADV8003 are ADV8003KBCZ-8/7 and ADV8003KBCZ-8C/7C. The single transmitter variants of
ADV8003 are ADV8003KBCZ-8B/7B. Any references to interrupts relating to HDMI Tx2 are not applicable to these parts. The
ADV8003KBCZ-7T does not feature any HDMI transmitters. Any references to interrupts relating to either HDMI Tx1 or HDMI Tx2 are
not applicable to this parts.
9.1.
INTERRUPT PINS
The ADV8003 features three dedicated interrupt pins, INT0, INT1, and INT2. These pins can be configured as open drain or standard IO
pads and can be configured as outputs or inputs. By default, they are set to standard TTL inputs. The following registers are used for
setting these pins.
int_pin_od_en[2:0]
, IO Map,
Address 0x1ACC[2:0]
This signal is used to control the output configuration for the interrupt signals used by the device.
Function
int_pin_od_en[2:0]
Description
100
RX interrupt enabled
010
TX interrupt enabled
001
OSD interrupt enabled
int_pin_oe[2:0]
, IO Map,
Address 0x1ACC[6:4]
This signal is used to control the polarity of the interrupt signals used by the device.
Function
int_pin_oe[2:0]
Description
100
RX interrupt enabled
010
TX interrupt enabled
001
OSD interrupt enabled
9.1.1.
Interrupt Duration
The interrupt duration can be programmed independently for interrupt pin INT2. When an interrupt event occurs, the interrupt pin
INT2 becomes active with a programmable duration as described in this section.
intrq_dur_sel[1:0]
, IO Map,
Address 0x1A69[3:2]
This signal is used to set the interrupt signal duration for the HDMI RX interrupts output on pin INT2.
Содержание ADV8003
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