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STV0118 bảng dữ liệu(PDF) 40 Page - STMicroelectronics

tên linh kiện STV0118
Giải thích chi tiết về linh kiện  PAL/NTSC HIGH PERFORMANCE DIGITAL ENCODER
PDF  42 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STV0118 bảng dữ liệu(HTML) 40 Page - STMicroelectronics

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VI.2 - Register Contents and Description (continued)
(*) = DEFAULT mode when NRESET pin is active (LOW level)
VI - REGISTERS (continued)
REGISTER_44 - cclif2 : Closed caption/extended data line insertion for field 2
TV line number where closed caption/extended data is to be encoded in field 2 is programmable through
the following register :
MSB
LSB
register_44
xxxx
xxxx
xxxx
I2_4
I2_3
I2_2
I2_1
I2_0
Default
00001
1
1
1
- 525/60 system : (525-SMPTE line number convention)
Only lines 273 through 284 should be used for closed caption or extended data services (preceding lines
contain the vertical sync pulses with equalizing pulses), although it is possible to program over a wider
range.
l2[4:0] = 00000 no line selected for closed caption encoding
l2[4:0] = 000xx do not use these codes
l2[4:0] = i line (269 +i) (SMPTE) selected for encoding
...
l2[4:0] = 01111 line 284 (SMPTE) selected for encoding
l2[4:0] = 11111 line 300 (SMPTE)
Note : if cgms is allowed on lines 20 and 283 (525/60, 525-SMPTE line number convention), closed
captions should not be programmed on these lines.
- 625/50 system : (625-CCIR line number convention)
Only lines 319 through 336 should be used for closed caption or extended data services (preceding lines
contain the vertical sync pulses with equalizing pulses), although it is possible to program over a wider
range.
l2[4:0] = 00000 no line selected for closed caption encoding (i > 0)
l2[4:0] = i line (318 +i) (CCIR) selected for encoding
...
l2[4:0] = 10010 line 336 (CCIR) selected for encoding
l2[4:0] = 11111 line 349 (CCIR)
(*) Default value = 01111 line 284 (525/60, 525-SMPTE line number convention).
This value also corresponds to line 333 in 625/50 system, (625-CCIR line number convention).
REGISTERS_45 up to 63 : Reserved
STV0118
40/42



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