参数资料
型号: 74ACT715DCQR
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, CDIP20
封装: CERAMIC, DIP-20
文件页数: 15/16页
文件大小: 236K
代理商: 74ACT715DCQR
Addressing Logic (Continued)
Normal device operation can be resumed by loading in a
non-scan address As the scanning of the registers is a non-
destructive scan the device will resume correct operation
from the point at which it was halted
RS170 Default Register Values
The tables below show the values programmed for the
RS170 Format (using a 1431818 MHz clock signal) and
how they compare against the actual EIA RS170 Specifica-
tions The default signals that will be output are CSYNC
CBLANK HDRIVE and VDRIVE The device initially starts at
the beginning of the odd field of interlace All signals have
active low pulses and the clock is disabled at power up
Registers 13 and 14 are not involved in the actual signal
information If the Vertical Interrupt was selected so that a
pulse indicating the active lines would be output
Reg
D Value H
Register Description
REG0
0
000
Status Register (715LM1882)
REG0
1024
400
Status Register (715-RLM1882-R)
REG1
23
017
HFP End Time
REG2
91
05B
HSYNC Pulse End Time
REG3
157
09D
HBLANK Pulse End Time
REG4
910
38E
Total Horizontal Clocks
REG5
7
007
VFP End Time
REG6
13
00D
VSYNC Pulse End Time
REG7
41
029
VBLANK Pulse End Time
REG8
525
20D
Total Vertical Lines
REG9
57
039
Equalization Pulse End Time
REG10
410
19A
Serration Pulse Start Time
REG11
1
001
Pulse Interval Start Time
REG12
19
013
Pulse Interval End Time
REG13
41
029
Vertical Interrupt Activate Time
REG14
526
20E
Vertical Interrupt Deactivate Time
REG15
911
38F
Horizontal Drive Start Time
REG16
92
05C
Horizontal Drive End Time
REG17
1
001
Vertical Drive Start Time
REG18
21
015
Vertical Drive End Time
Rate
Period
Input Clock
1431818 MHz
69841 ns
Line Rate
1573426 kHz
63556 ms
Field Rate
5994 Hz
16683 ms
Frame Rate
2997 Hz
33367 ms
RS170 Horizontal Data
Signal
Width
ms
%H
Specification (ms)
HFP
22 Clocks
1536
15 g01
HSYNC Width
68 Clocks
4749
747
47 g01
HBLANK Width
156 Clocks
10895
1715
109 g02
HDRIVE Width
91 Clocks
6356
1000
01H g0005H
HEQP Width
34 Clocks
2375
374
23 g01
HSERR Width
68 Clocks
4749
747
47 g01
HPER iod
910 Clocks
63556
100
RS170 Vertical Data
VFP
3 Lines
19067
6 EQP Pulses
VSYNC Width
3 Lines
19067
6 Serration Pulses
VBLANK Width
20 Lines
127112
762
0075V g 0005V
VDRIVE Width
110 Lines
69912
420
004V g 0006V
VEQP Intrvl
9 Lines
363
9 LinesField
VPERiod (field)
2625 Lines
16683 ms
16683 msField
VPERiod (frame)
525 Lines
33367 ms
33367 msFrame
8
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