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參數資料
| 型號： | 935272702551 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | ADC |
| 英文描述： | 3-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP144 |
| 封裝： | 20 X 20 MM, 1.40 MM HEIGHT, LEAD FREE, PLASTIC, SOT-486-1, LQFP-144 |
| 文件頁數： | 37/61頁 |
| 文件大小： | 326K |
| 代理商： | 935272702551 |
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2004 May 18
42
Philips Semiconductors
Product specication
Triple 8-bit video ADC up to 270 Msps
TDA8754
9.26
Activity detection register 2
It should be noted that activity, sign and polarity detection will be correctly set after a maximum delay of:
6 frame periods + 50 ms.
Table 67 ACTIVITY2 bit allocation
Table 68 ACTIVITY2 bit description
BIT
76543210
Symbol
ASD
3LEVEL
ACFIELD
HPDO
ACVSSEP
ACRXC1
ACRXC0
Default
X
0000000
BIT
SYMBOL
DESCRIPTION
7
not used
6
ASD
indicates if parasite sync pulses have been detected
0 = not detected
1 = detected
5
3LEVEL
state of the sync separator input
0 = Hsync
1 = 3-level Hsync
4
ACFIELD
activity of the sync separator FIELDO output
0 = not active
1 = active
3
HPDO
copy of the HPDO output state
0 = stable state on input
1 = new input
2
ACVSSEP
activity of the sync separator (Vsync output)
0 = not active
1 = active
1
ACRXC1
test bit
0
ACRXC0
test bit
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