Analog Devices Advantiv ADV7611 Hardware User's Manual page 41

Hardware User Guide
START
(AFTER POWER-UP)
HDCP_KEY_READ = 0
HDCP_KEY_ERROR = 0
READ KSV AND CHECKSUM
CS1 FROM HDCP OTP ROM
DERIVE CHECKSUM CS1'
FROM KSV
NO
CS1 = CS1'
YES
SET BKSV (HDCP REGISTER
ADDRESS 0x00
BKSV = KSV
HDCP_KEY_READ = 1
HDCP_KEY_ERROR = 0
END
Figure 6. HDCP ROM Access After Power-Up
Rev. A | Page 41 of 184
HDCP_KEY_ERROR = 1
UG-180