ASX340AT_16 Datasheet, PDF (4/54 Pages) ON Semiconductor – 1/4‐inch Color CMOS NTSC/PAL Digital Image SOC

ASX340AT
ARCHITECTURE
System Block Diagram
The system block diagram will depend on the application.
The system block diagram in Figure 2 shows all
components; optional peripheral components are
highlighted. Control information will be received by a
microcontroller through the automotive bus to communicate
with the ASX340AT through its two-wire serial bus.
Optional components will vary by application.
18 pF −NPO
27.000 MHz
18pF −NPO
EXTCLK
XTAL
RESET_BAR
FRAME_SYNC
System Bus
μC
2WIRE I/F
SPI
Serial Data
EEPROM/Flash
1KB − 16MB
2.8V
2.35 kΩ
DAC _REF
DAC _POS
DAC _NEG
V_DD_DAC (2.8 V)
V_DD_PLL (2.8.V)
V_DD_IO (2.8 V)
V_AA _PIX ( 2.8 V)
V_AA (2.8 V )
V_DD ( 1.8 V )
LP Filter
37.5Ω
Optional
Composite
Video
PAL /NTSC
VREG_BASE
D_OUT [7: 0]
D_{OUT_}LSB0, 1
PIXCLK
FRAME_VALID
LINE_VALID
Figure 1. System Block Diagram
CCIR 656/
GPO
www.onsemi.com
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