STV2246H STMicroelectronics, STV2246H Datasheet - Page 57

• Manufacturer Part Number: STV2246H
• Manufacturer: STMicroelectronics

Specifications of STV2246H

• Lead Free Status / Rohs Status: Compliant

STV224X, STV228X, STV223X - 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-
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
Positive/Negative Modulation
QSS/Intercarrier Application
FM/AM Output Selection
AGC SIF Time Constant
WR06 d3 & WR1E d4
QSS and AM defeat
CVBSout amplitude
WR0A d7:6
WR11 d4:0
WR02 d4:0
L/L' mode
WR01 d5
WR01 d4
WR04 d5
Bell Filter
WR06 d6
WR04 d6
RGBext
2248H/38H 2249H/39H 2247H/37H 2246H/36H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
0
00000
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”.
X
X
X
X
X
0
0
0
00000
X
X
X
0
0
0
1
1
2286H
00000
10000
01
00
0
0
0
1
1
1