
THCV235_THCV236_Rev.3.40_E
Copyright
©
2016 THine Electronics, Inc.
THine Electronics, Inc.
14/68
Security E
Main-Link Mode Setting
Two modes of Main-Link operation are available. Mode select is done by MAINMODE pin (when PDN1=0) or
MAINMODE register (when PDN1=1).
V-by-One
®
HS Mode (MAINMODE=0)
V-by-One
®
HS Mode is compliant with V-by-One
®
HS standard Version1.4. (See Figure 3 and Table 14)
Sync Free Mode (MAINMODE=1)
Incoming data can be transmitted by Sync Free Mode without DE requirement. (See Table 14)
Color Space Conversion
The THCV235 converts RGB444 to YCbCr422 and the THCV236 converts back to RGB. This function can
only be used in V-by-One
®
HS mode and enabled by COL1=1 setting. COL1 is external pin (when PDN1=0) or
internal register (when PDN1=1). Color space conversion coefficients are compliant with ITU-R BT.709-5.
Pre-emphasis and Drive Select Function (THCV235 only)
Pre-emphasis can equalize severe signal degradation caused by long-distance or high-speed transmission. PRE
pin or PRE register selects the strength of pre-emphasis. CMLDRV pin or CMLDRV register controls CML
Main-Link output swing level. See Table 4 and Table 5.
Table 4.
Pre-emphasis and Drive Select function table (PDN1=0)
CMLDRV
(pin)
PRE
(pin)
Condition
Swing Level
Pre-emphasis Level
0
0
600mV diff p-p
0dB
1 3.5dB
1
*
800mV diff p-p
0dB
Table 5.
Pre-emphasis and Drive Select function table (PDN1=1)
CMLDRV[1:0]
(register)
PRE
(register)
Condition
Swing Level
Pre-emphasis Level
00
0
400mV diff p-p
0dB
1 6dB
01
0
600mV diff p-p
0dB
1 3.5dB
10
*
800mV diff p-p
0dB
11
*
Forbidden