VV6404 datasheet(34/54 Pages) STMICROELECTRONICS

34 / 54 page

VV5404 & VV6404

CD5404-6404F-A

34/54

The option to enable the qclk during the data and control period of the line must not be selected if monochrome

(shuffled or unshuffled) video has been selected.

5.5.8

Setup5 [001_01012]

It is important to note that although the output buffer driver strengths can be selected by writing to this register the

programmed values cannot be read back by the serial interface.

QCK mode[1:0]

QCK state

Off

Free Running

Valid during data and control period of line (see

note)

Valid only during data period of line

Table 19 : QCK Modes

Note: Not currently verified. Contact STMicroelectronics for further information if this mode is to be used.

FST mode[1:0]

FST state

Off

On - qualifies the status line

Reserved

Unallocated

Table 20 : FST Modes

Bit

Function

Default

Comment

Map serial interface register bits

values on to the QCK and FST pins

Off/On

Serial Interface Bit for QCK pin

Serial Interface Bit for FST pin

Output driver strength select

Default setting selects 4mA driver

Output driver strength select

Default setting selects 4mA drivers

7:5

Unused

Table 21 : Setup4[001_01012]

Mapping Enable

FST pin

QCK pin

0FST

QCK

su5[2]

su5[1]

Table 22 : FST/QCK Pin Selection

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