bt829bkrf ETC-unknow, bt829bkrf Datasheet - Page 121

• Manufacturer Part Number: bt829bkrf
• Description: Video Streamii Decoders
• Manufacturer: ETC-unknow

Bt829B/827B
VideoStream II Decoders
Table 5-5. Clock Timing Parameters (2 of 2)
CLKx1 Duty Cycle
CLKx2 Duty Cycle
CLKx2 to CLKx1 Delay
CLKx1 to Data Delay
CLKx2 to Data Delay
CLKx1 (Falling Edge) to QCLK (Rising Edge)
CLKx2 (Falling Edge) to QCLK (Rising Edge)
8-Bit Mode
16-Bit Mode
Notes: (1). Because QCLK is generated with a gated version of CLKx1 or CLKx2, the timing in symbols 7 and 8 are subject to
Data to QCLK (Rising Edge) Delay
QCLK (Rising Edge) to Data Delay
Data to QCLK (Rising Edge) Delay
QCLK (Rising Edge) to Data Delay
(2). Parenthesis indicate max CLKx1/CLKx2 to Data Delay when using V
(1)
(1)
changes in the duty cycle of CLKx1 and CLKx2. If crystals are used as clock sources for the Bt829A, the duty cycle is
symmetric. This assumption is used to generate the timing numbers shown in 7 and 8. For non-symmetric clock
sources, use the following equations:
Data to QCLK (setup) 16-bit mode
QCLK to Data (hold) 16-bit mode
Data to QCLK (setup) 8-bit mode
QCLK to data (hold) 8-bit mode
Parameter
Symbol
41
42
7b
8b
7a
8a
xtal period + CLKx1 to qclk (max) - CLKx1 to data (max)
or
symbol 1 + symbol 41 (max) - symbol 5 (max)
NTSC: 34.9 nS + 8 nS - 11 nS = 31.9 nS
PAL: 28.2 nS + 8 nS -11 nS = 25.2 nS
xtal period - CLKx1 to qclk (min) + CLKx1 to data (min)
or
symbol 1 - symbol 41 (min) + symbol 5 (min)
NTSC: 34.9 nS - 0 nS + 3 nS = 37.9 nS
PAL: 28.3 nS - 0 nS + 3 nS = 31.3 nS
(xtal period)/2 + CLKx2 to qclk (max) - CLKx2 to data (max)
or
(symbol 1)/2 + symbol 42 (max) - symbol 6 (max)
NTSC: 17.5 nS + 8nS - 11 nS = 14.5 nS
PAL: 14.1 nS + 8 nS - 11 nS = 11.1 nS
(xtal period)/2 - CLKx2 to qclk (min) + CLKx2 to data (min)
or
(symbol 1)/2 - symbol 42 (min) + symbol 6 (min)
NTSC: 17.5 nS - 0 nS + 3 nS = 20.5 nS
PAL: 14.1 nS - 0 nS + 3 nS = 17.1 nS
4
5
6
D829BDSA
Min
45
40
15
14
25
0
3
3
0
0
5
DDO
= 3.3 V.
Typ
5.0 Parametric Information
5.2 AC Electrical Parameters
11 (25)
11 (25)
Max
55
60
2
8
8
(2)
(2)
Units
%
%
ns
ns
ns
ns
ns
ns
ns
ns
ns
111