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STV9410 bảng dữ liệu(PDF) 11 Page - STMicroelectronics

tên linh kiện STV9410
Giải thích chi tiết về linh kiện  CRT AND LCD SEMI-GRAPHIC DISPLAY PROCESSOR
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2.3 CLOCK AND TIMING GENERATOR
The whole timing is derived from XTI input fre-
quency which can be an external generator or a
crystal signal thanks to XTO/XTI oscillator.This
clock is also pixel frequency which can be chosen
between 8MHz to 10MHz (pxlck). This clock is
available on CKO pin. It should be use for the MCU,
saving a crystal in the application.
The active area of a video line is 320 pixels periods
long (40 characters of 8 pixels wide). Number of
lines per frame, margin width, line duration, leading
and trailing edges of horizontal synchronizationare
fully programmable in CRT mode using VERT,
HORI, HSYN registers.
A RESET, can be applied to STV9410 by pulling
low VREF pin (
≤ 0.4V).
On RESET, default values are forced into configu-
ration registers and video outputs are at low level.
All unused bit of registers are always read as ”0”.
2.3.1 Time Base Registers
Vertical Time Base and Configuration
Register (VERT)
Internal address : 2FF1-2FF0 h
RESET value :01-36 h
(@ = RESET default configuration)
2FF1 h LCD ILC
C/H
V/P VSE HSE
-
F8
@
0000
00
01
2FF0 h
F7
F6
F5
F4
F3
F2
F1
F0
@
0011
01
10
LCD
:
1 LCD mode
0 CRT mode @
ILC
:
1 Interlaced scanning
0 non-interlaced scanning @
C/H
:
1 CSYNC is composite synchro
0CSYNC is horizontal synchro @
V/P
:
1 VSYNC is vertical synchro
0VSYNC is RTP bit of current descriptor @
VSE
:
1 enable vertical synchro with SYNC IN
0 disable @
HSE
:
1 enable horizontal synchro with SYNC IN
0 disable @
F (8:0)
:
scan line number per frame (@ 312)
LCD
ILC
C/H
V/P
VSE HSE
-
F8
F6
F5
F7
F4
F3
F2
F1
F0
XXXXXX
-
0
000000
0
0
0
000000
0
1
0
0000
0
1
1
1
0
00
0
1
1
1
1
1
Not al lowed
3
16
64
100
120
240
250
310
312
313
320
480
512
513
0
01
1
000
0
1
0
01
10
1
1
0
1
0
1
1
0
1
1
11
0
0
0
0
1
1
1
1
1
0
0
1
00
1
10
0
1
1
0
1
1
1
00
1
1
0
1
1
1
00
1
0
1
1
1
1
1
1
00
0
1
1
1
1
1
110
0
1
1
1
1
1
1
1
11
1
1
1
1
1
1
1
1
F(0:8) + 2
-
01
0E
3E
62
76
EE
F8
34
36
37
3E
DE
FE
FF
Nb of S can
Lines
LS B
HEXA
2FF0
2FF1
F[8:0] = Scan Line Number - 2
262
263
0
1
1
0
1
04
05
0
0
0
0
0
0
0
0
0
01
0
1
0
1
Figure 6 : Vert Register Scan Lines Programmation
STV9410
11/25



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