Analog Devices Advantiv ADV7619 Hardware User's Manual page 164

UG-237
Using CEC Module as Follower
Figure 67 shows the algorithm that can be implemented in the host processor controlling the ADV7619 to use the CEC module as a
follower.
CEC_RX_RDY0_ST
= 1?
NO NO
YES
AND NOTE THE MAXIMUM VALUE
READ THE BUFFER
ASSOCIATED WITH
TIMESTAMP = 0b01
REACHED
MAXIMUM
TIMESTAMP?
NO
YES
SET THE APPROPRIATE CLEAR BITS
CORRESPONDING TO THE BUFFERS
Figure 67. Using CEC Module as Follower
START
(WAIT FOR INTERRUPT)
CEC_RX_RDY1_ST CEC_RX_RDY2_ST
= 1?
YES YES
READ
CEC_BUF0_TIMESTAMP
CEC_BUF1_TIMESTAMP
CEC_BUF2_TIMESTAMP
READ THE BUFFER
ASSOCIATED WITH
TIMESTAMP = 0b10
REACHED
MAXIMUM
TIMESTAMP?
NO
YES
CEC_RX_RDY0_CLR
CEC_RX_RDY1_CLR
CEC_RX_RDY2_CLR
THAT HAVE BEEN READ
END
Rev. A | Page 164 of 204
Hardware User Guide
= 1?
NO
READ THE BUFFER
ASSOCIATED WITH
TIMESTAMP = 0b11