ch7028b Chrontel, ch7028b Datasheet - Page 8

• Manufacturer Part Number: ch7028b
• Description: Chrontel Ch7028b Sdtv Encoder
• Manufacturer: Chrontel

CHRONTEL
Pin #
K7
K8
F9
F8
B6
D1, F1, L7, G9
K6
K4
E2, H1
G2, J8, H6
A6
F4, F2, L6, G8
K5
K3
E1, J1
F3, H9, H8
Notes
1. All the unused Data input pins should be pulled low with 10kΩ resistors or shorted to Ground directly.
2. All the NC pins should be left open.
8
:
Type
In
Out
In
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Symbol
XI
XO
GCLK
VDDIO
DVDD
AVDD
AVDD_PLL
AVDD_DAC
VDDQ_MEM
VDD_MEM
DGND
AGND
AGND_PLL
AGND_DAC
GNDQ_MEM
GND_MEM
NC
Description
Crystal Input / External Input
For some situation of the slave mode, a parallel resonance
crystal (± 20 ppm) should be attached between this pin and
XO. However, an external 3.3V CMOS compatible clock
can drive the XI input.
Crystal Output
For some situation of the slave mode, a parallel resonance
crystal (± 20 ppm) should be attached between this pin and
XI. However, if an external CMOS clock is attached to XI,
XO should be left open.
Graphics Controller Clock Input
IO supply voltage (1.2-3.3V)
Digital supply voltage (1.8V)
Analog supply voltage (2.5 – 3.3V)
PLL supply voltage (1.8V)
DAC power supply (2.5 – 3.3V)
SDRAM output buffer supply voltage (2.5V)
SDRAM device supply voltage (2.5V)
Digital supply ground
Analog supply ground
PLL supply ground
DAC supply ground
SDRAM output buffer supply ground
SDRAM device supply ground
All the NC pins should be left open.
209-1000-001
Rev. 1.1,
CH7028B
08/21/2008