STV2247H View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
STV2247H Datasheet PDF : 86 Pages
| |||
STV224XH/228XH/223XH - I²C BUS SPECIFICATION COMPATIBILITY
7 I²C BUS SPECIFICATION COMPATIBILITY
The STV2246H/36H, 2286H, 2247H/37H, 2248H/
38H and 2249H/39H I²C bus specification is com-
patible between IC version. However, some dedi-
cated settings must be used for the different ver-
sions. The following sections show the differences
between the various versions. An “X” means that
the function is available and can be set to “1” or
“0”.
2248H/38H 2249H/39H 2247H/37H 2246H/36H
RGBext
WR0A d7:6
X
X
X
X
L/L' mode
WR01 d5
X
0
0
0
Positive/Negative Modulation
WR01 d4
X
0
0
0
FM/AM Output Selection
WR04 d5
X
0
0
0
Bell Filter
WR11 d4:0
X
X
00000
00000
QSS/Intercarrier Application
WR06 d6
X
X
X
1
QSS and AM defeat
WR04 d6
X
X
X
1
AGC SIF Time Constant
WR06 d3 & WR1E d4
X
X
X
X
CVBSout amplitude
WR02 d4:0
X
X
X
X
2286H
011
0
0
0
00000
1
1
00
10000
Note 1: The FBEXT pin must be connected to ground.
CAUTION: The specification of WR04 d3:2 has changed.
For 224XC versions (refer to STV224XC datasheet), WR04 d3:2 = 11 (bin.) means that FM demod de-
emphasis is bypassed. This function is used for BTSC application compatibility.
For 224XD/XE versions, WR04 d3:2 = 11: NOT TO BE USED.
For 224XH versions, WR04 d3:2 = 11 (bin.) means that Audio FM Wide mode is selected and it must be
used in QSS applications only. In this case, the following registers must be programmed:
WR04 d3:2 = 11 (bin.) (Audio FM Wide mode)
WR06 d6 = 0 (QSS application)
WR1F d5:4 = 1x (bin.) (AVL ON)
CAUTION: The specification of WR07 d6 has changed.
For 224XC/224XD versions, WR07 d6 = 1 means “insertion of cut-off pulses after a vertical oversize
blanking”
For 224XE/XH versions, WR07 d6 = 1 means “RGB peak limitation”
CAUTION: The specification of WR0F d5 has changed.
The new specification is:
WR0F d5 = 0: trap and luma delay active; this is not changed
WR0F d5 = 1: trap and luma delay disabled (bypass); this is changed
57/86
Share Link: 