MAX9263GCB/V+T Maxim Integrated, MAX9263GCB/V+T Datasheet - Page 48

• Manufacturer Part Number: MAX9263GCB/V+T
• Description: Serializers & Deserializers - Serdes GMSL Serializer w/HDCP Interface
• Manufacturer: Maxim Integrated

48
HDCP Gigabit Multimedia Serial
Link Serializer/Deserializer
Table 15. Startup, HDCP Authentication, and Normal Operation (Deserializer is not a
Repeater)—First Part of the HDCP Authentication Protocol (continued)
Table 16. Link Integrity Check (Normal)—Performed Every 128 Frames After Encryption
is Enabled
NO.
NO.
10
11
12
13
8
9
1
2
3
4
5
6
7
Reads the BKSV and REPEATER bit from the deserializer
and writes to the serializer.
Reads the INVALID_BKSV bit of the serializer and continues
with authentication if it is 0. Authentication can be restarted
if it fails (set RESET_HDCP = 1 before restarting authentica-
tion).
Reads R0’ from the deserializer and reads R0 from the seri-
alizer. If they match, continues with authentication;
otherwise, retries up to two more times (optionally, the seri-
alizer comparison can be used to detect if R0/R0’ match).
Authentication can be restarted if it fails (set the
RESET_HDCP = 1 before restarting authentication).
Waits for the VSYNC falling edge (internal to the serializer)
and then sets the ENCRYPTION_ENABLE bit to 1 in the
deserializer and the serializer (if the FC is not able to
monitor VSYNC, it can utilize the VSYNC_DET bit in the
deserializer).
Checks that BKSV is not in the Key Revocation list and
continues if it is not. Authentication can be restarted if it fails.
Note: Revocation list check can start after BKSV is read in
step 8.
Starts transmission of A/V content that needs protection.
—
—
Every 128 video frames (VSYNC cycles) or every 2s.
Reads RI from the serializer.
Reads RI’ from the deserializer.
Reads RI again from the serializer and ensures it is
stable (matches the previous RI that it has read from the
serializer). If RI is not stable, go back to step 5.
If RI matches RI’, link integrity check is successful, go
back to step 3.
µC
µC
Generates Ri and updates
the RI register every 128
VSYNC cycles.
Continues to encrypt and
transmit A/V data.
—
—
—
—
—
Generates R0, triggered by
the FC’s write of BKSV.
—
—
Encryption is enabled after
the next VSYNC falling
edge.
—
Performs HDCP encryption
on high-value content A/V
data.
SERIALIZER
SERIALIZER
Generates Ri’ and updates
the RI’ register every 128
VSYNC cycles.
Continues to receive, decrypt,
and output A/V data.
—
—
—
—
—
—
—
—
Decryption is enabled after
the next VSYNC falling
edge.
—
Performs HDCP decryption
on high-value content A/V
data.
DESERIALIZER
DESERIALIZER