參數(shù)資料
型號： Q67107-H5167-A703
廠商： SIEMENS AG
英文描述： DDC-PLUS-Deflection Controller
中文描述： DDC的加偏轉(zhuǎn)控制器
文件頁數(shù)： 18/47頁
文件大?。?/td> 237K
代理商： Q67107-H5167-A703
SDA 9361
Semiconductor Group
18
1998-02-01
a) The effective range for
Vertical Blanking Time
:
16 ... 127 (absolute value)
0 ... 127 (offset value)
b) The "default value if disabled" for
Vertical Blanking Time
:
21 (absolute value)if STE = 0
8 (offset value)if STE = 1.
c) The effective range for
Start Vertical Scan:
2 ... 127 (absolute value)
if STE = 0
if STE = 1.
if STE = 0
if STE = 1 and NSA = 1
if STE = 1 and NSA = 0.
-128 ... 127 (offset value)
d) The effective range for
Vertical Scan
(total width: 10 Bit): 160 ... 684 lines.
e) The "default value if disabled" for
Vertical Scan
equals the number of lines of the
source signal reduced by the control value for
Start Vertical Scan
. (E.g.: input signal:
262 lines per field; Start vertical scan = 8 lines; then (if SSE = 1, STE = 0) vertical
scan = 262 - 8 = 254 lines.
At power on the RAM containing the control items is cleared. Therefore all data are zero
by default (if not otherwise defined) before transferring individual values via
Ι
2
C Bus.
Allowed values out of the effective range are limited, e. g. Vertical blanking time = 3 is
limited to 16 if STE = 0 (that means a minimum of 16 lines is blanked).
There are five bits (SRSE, BSE, SSE, STE, GBE) in the deflection control byte 1 for
disabling some control items. If one of these bits is "0", the value of the corresponding
control item will be ignored and replaced by the value "default value if disabled" in the
table above.
2.5.4
The
Deflection Control Byte 0
includes the following bits:
Detailed Description
VOFF:
Vertical off
0:
normal vertical output due to control items
1:
vertical saw-tooth is switched off,
vertical protection is disabled
Default value depends on pin 44 (VOFFD)
VOFFD = Low: 0
VOFFD = High: 1
VOFF
STDBY
2FH
BD
RABL
VR1
VR0
HDE
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