[ADV7619] ADV7619-VER.1.9c.txt Unknown Register Address

Hello,

I'm trying to understand what "ADI Required Write" is in the ADV7619-VER.1.9c.txt script file and where to find the definition of it's corresponding address.

What does ADI Required Write mean? Is it required?

For the 68 C0 03 ; ADI Required Write, where can I find the definition of C0?

Please find below the portion of the script to be implemented.

##03 HDMI Input to ADV7619, Input Pixel Frequency > 170MHz ##
:03-01 RGB 444 In - 2x24-bit RGB 444 Out - For use up to 4k2k:
98 FF 80 ; I2C reset
98 F4 80 ; CEC
98 F5 7C ; INFOFRAME
98 F8 4C ; DPLL
98 F9 64 ; KSV
98 FA 6C ; EDID
98 FB 68 ; HDMI
98 FD 44 ; CP
68 C0 03 ; ADI Required Write
98 00 19 ; Set VID_STD
98 01 05 ; Prim_Mode =101b HDMI-Comp
98 02 F2 ; Auto CSC, RGB out, Set op_656 bit
98 03 54 ; 2x24 bit SDR 444 interleaved mode 0
98 05 28 ; AV Codes Off
98 06 A0 ; No inversion on VS,HS pins
98 0C 42 ; Power up part
98 15 80 ; Disable Tristate of Pins
98 19 83 ; LLC DLL phase
98 33 40 ; LLC DLL MUX enable
98 DD 00 ; ADI Required Write
98 E7 04 ; ADI Required Write
4C B5 01 ; Setting MCLK to 256Fs
4C C3 80 ; ADI Required Write
4C CF 03 ; ADI Required Write
4C DB 80 ; ADI Required Write
68 C0 03 ; ADI Required write
68 00 08 ; Set HDMI Input Port A (BG_MEAS_PORT_SEL = 001b)
68 02 03 ; ALL BG Ports enabled
68 03 98 ; ADI Required Write
68 10 A5 ; ADI Required Write
68 1B 00 ; ADI Required Write
68 45 04 ; ADI Required Write
68 97 C0 ; ADI Required Write
68 3E 69 ; ADI Required Write
68 3F 46 ; ADI Required Write
68 4E FE ; ADI Required Write
68 4F 08 ; ADI Required Write
68 50 00 ; ADI Required Write
68 57 A3 ; ADI Required Write
68 58 07 ; ADI Required Write
68 6F 08 ; ADI Required Write
68 83 FC ; Enable clock terminators for port A & B
68 84 03 ; FP MODE
68 85 10 ; ADI Required Write
68 86 9B ; ADI Required Write
68 89 03 ; HF Gain
68 9B 03 ; ADI Required Write
68 93 03 ; ADI Required Write
68 5A 80 ; ADI Required Write
68 9C 80 ; ADI Required Write
68 9C C0 ; ADI Required Write
68 9C 00 ; ADI Required Write
End