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ST6373 Folha de dados(PDF) 42 Page - STMicroelectronics

Nome de Peças ST6373
Descrição Electrónicos  8-BIT ROM/OTP/EPROM MCUs FOR DIGITALLY CONTROLLED MULTISYNC/MULTISTANDARD MONITORS
PDF  64 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
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ST6373 Folha de dados(HTML) 42 Page - STMicroelectronics

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SYNC PROCESSOR (Cont’d)
Period Counter 2 And Blank Control Register
(PCBCR)
Address: F1h - Read/Write
Reset Value: XFh
b7: Not Used
b6: BOS:
Blank Output Selection
0=PA5, 1=BLANK, Write Only, 0 after Reset
b5: VFLYF:
Vertical FLY-back Flag
Set on falling edge of VFLY/PB6 input, Read and
Write, cleared by S/W (write of zero), undefined af-
ter Reset
b4: HFLYF: Horizontal FLY-back Flag
Set on falling edge of HFLY/PB5 Input, Read and
Write, cleared by S/W (write of zero), undefined af-
ter Reset
b3 to b0: 4 MSB bits of period counting result,
Read Only, Fh After Reset
Figure 27. SYNC Processor Block Diagram
70
NU
BOS
VFLY
HFLY
V11
V10
V9
V8
VSYNCO
1
0
CLMPO
HSYNCO
HVGEN
COPC
CMCT
VSYNCO
POLARITY
VSYNCI
HSYNCI
1
0
HDRIVE
SHH
To
Blk
V 12 bit TIMER
(VACQ)
HSYNCO
POLARITY
H 12 bit Event Counter
(timer 3)
VSYNCI
HSYNCI
H Polarity Detector
HPF
HVGEN
1
0
HVOS
HVOS
CMW0:1
VSYNCEN
VOPC
HOPC
R
S
BLKEN
PA5/BLK0
To Edge detector (HFLYF)
To Edge detector (VFLYF)
PB5/HFLY
PB6/VFLY
PA3/VSYNCO
HFLY, VFLY, VSYNCO signals should have positive polarity
Blank Out Generation
VR02089A
VSYNC+
Generator
61 Hz,64
µs
HSYNC+
Generator
62.5 kHz, 2
µs
Sync Generator
H/W Block
BACK PORCH
CLAMP
GENERATOR
CLAMP
POLARITY
Latch
Pulse
Detect
Polarity
Detector
VPF



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