參數(shù)資料
型號(hào): 935242210551
廠商: NXP SEMICONDUCTORS
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP160
封裝: PLASTIC, SOT-322, QFP-160
文件頁數(shù): 106/147頁
文件大小: 526K
代理商: 935242210551
1998 Apr 09
61
Philips Semiconductors
Product specication
Multimedia bridge, high performance
Scaler and PCI circuit (SPCI)
SAA7146A
Table 53 Field interval denitions for D1 (CCIR 656) SAV and EAV codes; note 1
Note
1. Signals F and V change state synchronously with the end of active video timing reference code at the beginning of
the digital line.
7.8.6.1
Field detection control
Field detection modes:
Direct mode: FLD signal detected from incoming H/V signals, for timing behaviour see Fig.11.
Forced toggle: FLD signal regularly synchronized to source, but will never stay more than two fields with the same ID.
The circuit expects to detect a field change with every vertical reference edge, if the field does not change (field error),
the circuit change the field ID automatically. If the circuit switch to the wrong sequence i. e. at the beginning of
processing, it will be synchronized after one second where no field error has occurred.
Free toggle: FLD signal toggles with every vertical reference edge, independent of source FID.
DEFINITION
625 LINES
525 LINES
V-digital eld blanking
Field 1; start (V = 1)
Line 624
Line 1
Field 1; nish (V = 0)
Line 23
Line 10
Field 2; start (V = 1)
Line 311
Line 264
Field 2; nish (V = 0)
Line 336
Line 273
F-digital eld identication
Field 1; F = 0
Line 1
Line 4
Field 2; F = 1
Line 313
Line 266
Fig.12 Timing of field detection EVEN-to-ODD for direct mode.
handbook, full pagewidth
VS
MHB053
HS
V-DMSD
LLC
FLD-DMSD
FLD
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