ImageQuest Q770 - Pin Connection; Pin Descriptions

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PIN CONNECTION
Name
VSSA
VCO
RP
VDDA
HFLB
SSB
SDA
SCK
PWM0
PWM1
PWM2
PWM3
I/O
-
I/O
I/O
-
I
I
I
I
O
O
O
O
PIN NO.
N16 N20 N24
1 1 1
2 2 2
3 3 3
4 4 4
5 5 5
6 6 6
7 7 7
8 8 8
- 9 9
- 10 10
- - 11
- - 12
Descriptions
Analog ground. This ground pin is used to internal analog circuitry.
Voltage Control Oscillator. This pin is used to control the internal oscil-
lator frequency by DC voltage input from external low pass filter.
Bias Resistor. The bias resistor is used to requlate the appropriate bias
current for internal oscillator to resonate at specific dot frequency.
Analog power supply. Positive 5V DC supply for internal analog cir-
cuity, Any a 0.1uF decoupling capacitor shouid be connected across to
VDDA and VSSA.
Horizontal input. This pin is used to input the horizontal synchronizing
signal. It is a leading edge triggered and has an internal pull-up resistor.
Serial interface enable. It is used to enable the serial data and is also used
to select the operation of I
2
C or SPI bus. If this pin is left floating, I2C bus
is enabled, otherwise the SPI bus is enabled.
Serial data input . The external data transfer through this pin to internal
display registers and control registers. lt has an internal pull-up resistor.
Serial clock input. The clock-input pin is used to synchronize the data
transfer. It has an internal pull-up resistor.
Open-Drain PWM D/A converter 0. The output pulse width is program-
mable by the register of Row 15, Column 23.
Open-Drain PWM D/A converter 1. The output pulse width is program-
mable by the register of Row 15, Column 24.
Open-Drain PWM D/A converter 2. The output pulse width is program-
mable by the register of Row 15, Column 25.
Open-Drain PWM D/A converter 3. The output pulse width is program-
mable by the register of Row 15, Column 26.
VSSA


VSS


ROUT

GOUT

BOUT

FBKG

HTONE/PWMCK

VFLB

VDD

PWM 7

PWM 6


PWM 5


PWM 4


VCO


RP


VDDA


HFLB


SSB


SDA

SCK


PWM0


PWM1


PWM2


PWM3


1
2
3
4
5
6
7
8
9
10
12
24
23
22
21
20
19
18
17
16
15
14
13
11
MTV021N24
VSSA


VSS


ROUT

GOUT

BOUT

FBKG

HTONE/PWMCK

VFLB

VDD

PWM 7

PWM 6


VCO


RP


VDDA


HFLB


SSB


SDA

SCK


PWM0


PWM1


1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
MTV021N20
VSSA


VSS


ROUT

GOUT

BOUT

FBKG

HTONE/PWMCK

VFLB

VDD

VCO


RP


VDDA


HFLB


SSB


SDA

SCK


1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
MTV021N21
PIN DESCRIPTIONS