Analog Devices Advantiv ADV7611 Hardware User's Manual page 40

UG-180
HDMI_CONTENT_ENCRYPTED , Addr 68 (HDMI), Address 0x05[6] (Read Only)
A readback to indicate the use of HDCP encryption.
Function
HDMI_CONTENT_ENCRYPTED
0 (default)
1
HDMI_ENCRPT_X_RAW reports the encryption status of the data present on each individual HDMI port (where X = A).
Note: These bits are reset to 0 if an HDMI packet detection reset occurs. (Refer to the HDMI Packet Detection Flag Reset section.)
HDMI_ENCRPT_A_RAW , IO, Address 0x6F[2] (Read Only)
Raw status of Port A encryption detection signal.
Function
HDMI_ENCRPT_A_RAW
0 (default)
1
Notes
•
The ADV7611 supports the 1.1_FEATURES, FAST_REAUTHENTICATION, and FAST_I2C speed HDCP features. The BCAPS
register must be initialized appropriately if these features are to be supported by the application integrating the ADV7611, for
example, set BCAPS[0] to 1 to support FAST_REAUTHENTICATION.
•
It is recommended to set
to 0 for DVI applications.
Internal HDCP Key OTP ROM
The ADV7611 features an on-chip nonvolatile memory that is preprogrammed with a set of HDCP keys.
HDCP Keys Access Flags
The ADV7611 accesses the internal HDCP key OTP ROM (also referred to as HDCP ROM) on two different occasions:
•
After a power up, the ADV7611 reads the KSV from the internal HDCP ROM (refer to Figure 6).
•
After a KSV update from an HDCP transmitter, the ADV7611 reads the KSV and all keys in order to carry out the link verification
response (refer to Figure 7).
The host processor can read the HDCP_KEYS_READ and HDCP_KEY_ERROR flags to check that the ADV7611 successfully accessed
the HDCP ROM.
HDCP_KEYS_READ , Addr 68 (HDMI), Address 0x04[5] (Read Only)
A readback to indicate a successful read of the HDCP keys and/or KSV from the internal HDCP Key OTP ROM. A logic high is returned
when the read is successful.
Function
HDCP_KEYS_READ
0 (default)
1
HDCP_KEY_ERROR , Addr 68 (HDMI), Address 0x04[4] (Read Only)
A readback to indicate if a checksum error occurred while reading the HDCP and/or KSV from the HDCP Key ROM Returns 1 when
HDCP Key master encounters an error while reading the HDCP Key OTP ROM
Function
HDCP_KEY_ERROR
0 (default)
1
Description
The input stream processed by the HDMI core is not HDCP encrypted.
The input stream processed by the HDMI core is HDCP encrypted.
Description
Current frame in Port A is not encrypted.
Current frame in Port A is encrypted.
BCAPS[7:0] Bit [7] to 1 if the ADV7611 is used as the front end of an HDMI receiver. This bit should be set
Description
HDCP keys and/or KSV not yet read
HDCP keys and/or KSV HDCP keys read
Description
No error occurred while reading HDCP keys
HDCP keys read error
Rev. A | Page 40 of 184
Hardware User Guide