DS90UH948-Q1 Datasheet, PDF (31/91 Pages) Texas Instruments – FPD-Link III to OpenLDI Deserializer

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Sample Rate
(kHz)
32
44.1
48
96
192
32
44.1
48
96
192
DS90UH948-Q1
SNLS473A – OCTOBER 2014 – REVISED JANUARY 2016
Table 7. Audio Interface Frequencies (continued)
I2S Data Word Size (bits) I2S_CLK (MHz)
1.536
2.117
24
2.304
4.608
9.216
2.048
2.8224
32
3.072
6.144
12.288
MCLK Output (MHz)
I2S_CLK x1
I2S_CLK x2
I2S_CLK x4
I2S_CLK x1
I2S_CLK x2
I2S_CLK x4
I2S_CLK x1
I2S_CLK x2
I2S_CLK x4
I2S_CLK x1
I2S_CLK x2
I2S_CLK x4
I2S_CLK x1
I2S_CLK x2
I2S_CLK x4
I2S_CLK x1
I2S_CLK x2
I2S_CLK x4
I2S_CLK x1
I2S_CLK x2
I2S_CLK x4
I2S_CLK x1
I2S_CLK x2
I2S_CLK x4
I2S_CLK x1
I2S_CLK x2
I2S_CLK x4
I2S_CLK x1
I2S_CLK x2
I2S_CLK x4
Register 0x3A[6:4]
000
001
010
001
010
011
001
010
011
010
011
100
011
100
101
001
010
011
001
010
011
001
010
011
010
011
100
011
100
110
8.3.14 HDCP Repeater
The supported Repeater application provides a mechanism to extend transmission over multiple links to multiple
display devices.
8.3.14.1 HDCP
The HDCP Cipher function is implemented in the deserializer per HDCP v1.4 specification. The DS90UH948-Q1
provides HDCP decryption of audiovisual content when connected to an HDCP capable FPD-Link III serializer.
HDCP authentication and shared key generation is performed using the HDCP Control Channel, which is
embedded in the forward and backward channels of the serial link. On-chip Non-Volatile Memory (NVM) is used
to store the HDCP keys. The confidential HDCP keys are loaded by TI during the manufacturing process and are
not accessible external to the device.
8.3.14.2 HDCP Repeater
The supported HDCP Repeater application provides a mechanism to extend HDCP transmission over multiple
links to multiple display devices. It authenticates all HDCP devices in the system and distributes protected
content to the HDCP Receivers using the encryption mechanisms provided in the HDCP specification.
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