29

LED_PRECHARGE

Address: 0x34

Access: Read/Write

Reset Value: 0xa0

Bit

7

6543210

Field

LED_PRE

LED_PRE

LED_PRE

LED_PRE

LED_PRE

LED_PRE

LED_PRE

LED_PRE

Data Type: Bit field

USAGE:

This register is used to configure the LED precharge of the sensor. The default pre flash is about 190uS for

nominal clock of 26MHz~28Mhz.

Bit

Field Name

Description

7:0

LED_PRECHARGE

precharge time (in clock counts) = LED_PRECHARGE" *32 + 30

FRAME_IDLE

Address: 0x35

Access: Read/Write

Reset Value: 0x00

Bit

7

6543210

Field

FRAME_IDLE

FRAME_IDLE

FRAME_IDLE

FRAME_IDLE

FRAME_IDLE

FRAME_IDLE

FRAME_IDLE

FRAME_IDLE

Data Type: Eight Bit Unsigned Integer

USAGE:

This register is used to control the frame rate. The value in this register is used to add frame idling time, which

effectively reduces the frame rate.

frame_idle_time (in clock counts) = (register value) * 32

Frame period (in clock counts) = shutter_time (reg 0x06 and reg 0x07) + (3400 clocks) + frame_idle_time

When this register is set to 0x00, the maximum frame rate is about 6666 fps @26MHz internal clock frequency

Bit

Field Name

Description

7:0

FRAME_IDLE

Frame Idling time(in clock counts)=FRAME_IDLE*32

POWER_UP_RESET

Address: 0x3a

Access: Write

Reset Value: 0x00

Bit

7

6543210

Field

RESET

RESET

RESET

RESET

RESET

RESET

RESET

RESET

Data Type: Bit field

USAGE:

This register is used to configure the resolution of the sensor.

Bit

Field Name

Description

7:0

POWER_UP_RESET

Power up reset. 0x5a/0x5b for full reset. 0x96/0x97 for partial reset.

Address: 0x

3b

Access:

Write

Reset Value: 0x

00

Bit

7

6543210

Field

SD

SD

SD

SD

SD

SD

SD

SD

Data Type:

Bit field

USAGE:

This register

is used to shut down the sensor

PixArt Imaging Inc.

All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed o any other forms without permission.

PixArt Imaging Inc.

Bit

Field Name

Description

7:0

SHUTDOWN

Chip Shutdown

Write 0xe7 to power down sensor.

Write 0x5a to register 0x3a to reset the sensor in order to wake-up

SHUTDOWN