MAX9263GCB/V+T Maxim Integrated, MAX9263GCB/V+T Datasheet - Page 53

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

Table 18. HDCP Authenticaion and Normal Operation (One Repeater, Two µCs)—First
and Second Parts of the HDCP Authentication Protocol (continued)
When a new device is connected to the system, the
device must be authenticated and the device’s KSV
checked against the revocation list. The downstream
FCs can set the NEW_DEV_CONN bit of the upstream
receiver and invoke an interrupt to notify upstream FCs.
HDCP repeaters do not immediately begin authentication
upon startup or detection of a new device, but instead
wait for an authentication request from the upstream
transmitter/repeaters.
Use the following procedure to notify downstream links of
the start of a new authentication request:
NO.
Enable of Encryption to Downstream Links
14
15
16
17
18
Notification of Start of Authentication and
Reads the KSV list and BINFO from
RX_R1 and writes them to TX_B1. If
any of the MAX_DEVS_EXCEEDED
or MAX_CASCADE_EXCEEDED
bits is 1, then authentication fails.
Note: BINFO must be written after
the KSV list.
Reads V from TX_B1 and V’ from
RX_R1. If they match, continues
with authentication; otherwise,
retries up to two more times.
Searches for each KSV in the KSV
list and BKSV of RX_R1 in the Key
Revocation list.
If keys are not revoked, the second
part of the authentication protocol
is completed.
Starts transmission of A/V content
that needs protection.
µC_B
Detection and Action Upon
New Device Connection
HDCP Gigabit Multimedia Serial
—
—
—
—
—
Link Serializer/Deserializer
µC_R
1) Host FC begins authentication with the HDCP repeat-
2) When AKSV is written to HDCP repeater’s input
3) HDCP repeater’s FC waits for a low to high transition
4) HDCP repeater’s FC resets AUTH_STARTED bit.
Set GPIO0_FUNCTION to high to have GPIO0 follow the
ENCRYPTION_ENABLE bit of the receiver. The repeater
FC can use this function to be notified when encryption
is enabled/disabled by an upstream FC.
er’s input receiver.
receiver, its AUTH_STARTED bit is automatically set
and its GPIO1 goes high (if GPIO1_FUNCTION is set
to high).
on HDCP repeater input receiver’s AUTH_STARTED
bit and/or GPIO1 (if configured) and starts authentica-
tion downstream.
TX_B1: Triggered
by FC_B’s write of
BINFO, calculates
hash-value V on the
KSV list, BINFO,
and the secret-value
M0.
—
—
—
All: Perform HDCP
encryption on high-
value A/V data.
TX_B1 CDS = 0
TX_R1 CDS = 0
TX_R2 CDS = 0
(TX_B1, TX_R1,
SERIALIZER
TX_R2)
—
—
—
—
All: Perform HDCP
decryption on high-
value A/V data.
DESERIALIZER
(RX_R1, RX_D1,
RX_R1 CDS = 1
RX_D1 CDS = 0
RX_D2 CDS = 0
RX_D2)
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