[ADV7619] 1600x1200p 120Hz setting

I use ADV7619.
I am trying to configure a resolution of 1600x1200p 120Hz (VESA DMT ID: 38 h).
But the ADV7619 is not operates well.
(1600x1200p 60Hz is well. 2 x 24 bit RGB 444 Out)

 LLC : output
 DE : output
 HS : not well (Low)
 VS : not well (Low)
 P[47:24] : output (?)
 P[23:0] : not well

Setting Value
Since the TMDS clock is 268.25 MHz (> 170 MHz),
the following samples are set.
ADV7619 Design Support files : ADV7619-VER.1.9c.txt
  ##03 HDMI Input to ADV7619, Input Pixel Frequency > 170MHz ##
  :03-01 RGB 444 In - 2x24-bit RGB 444 Out - For use up to 4k2k:

About this sample setting, I have 3 questions.

[Q.1]
UG-237 (the bottom note on p26) describes the following.
OP_FORMAT_SEL[7:0], IO, Address 0x03[7:0]
  The 0x54, 0x94, 0x95, 0x96 modes registers should be set as follows:
  (1)DPLL Map, Register 0xC3 to Register 0x80. = 4C C3 80
  (2)DPLL Map, Register 0xCF to Register0x03. = 4C CF 03
  (3)IO Map, Register 0xDD to Register 0xA0. = 98 DD A0
  (4)IO Map, Register 0xBF[0] = 0 (CP_COMPLETE_BYPASS_IN_HDMI_MODES disabled).
(In the sample settings of ADV7619-VER.1.9c, OP_FORMAT_SEL=0x54 ; 2x24 bit SDR 444 interleaved mode 0)

However, the following two points are different from the sample settings.
  (3)98 DD A0 --> sample settings : 98 DD 00
  (4)IO Map, Register 0xBF[0] = 0 --> sample settings are none

What is the correct setting?


[Q.2]
In the 1600x1200p 120Hz (VESA DMT ID:38h) standard, HS=positive polarity and VS=negative polarity.
Can the polarity of the sync signal be received with the sample setting unchanged?
Or do I need to change the polarity of the HDMI input?

[Q.3]
Are there any other settings I need?

ADV7619-VER.1.9c.txt
##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

Thanks.