PixArt Imaging Inc.
ADNS-7550 Integrated Molded Lead-Frame DIP Sensor
H_RESOLUTION
Address: 0x36
Access: Read/Write
Reset Value: 0x04
Bit
7
6
5
4
3
2
1
0
0
Field
Reserved
Reserved
Reserved
H_RES_EN
H_RES2
H_RES1
H_RES0
Data Type
: Bit field
USAGE : This register is used to set the resolution configuration of sensor up to 2000cpi. For resolution setting at
1600cpi and below, configuration via Configuration_Bits register, 0x12 is still effective when H_RES_EN bit is set to
zero.
Field Name
Description
H_RES_EN
0 = Resolution setting will follow the value as per configuration in Configuration_Bits register, 0x12
1 = Enabled high resolution up to 2000cpi. Resolution setting will follow the configuration
as per H_RES2-0 bits in this register and setting in register 0x12 will be ignored.
H_RES2-0
Resolution in count per inch (cpi)
001 = 400
010 = 800
011 = 1200
100 = 1600
101 = 2000
Bit-0
Must be zero value
POWER_UP_RESET
Address: 0x3a
Reset Value: NA
5
Access: Write
Bit
7
6
4
3
2
1
0
Field
RST
RST
RST
RST
RST
RST
RST
RST
0
7
6
5
4
3
2
1
Data Type: 8 Bit integer
USAGE: Write 0x5a to this register to reset the chip. All settings will revert to default values. Reset is required after
recovering from shutdown mode.
SHUTDOWN
Address: 0x3b
Reset Value: NA
5
Access: Write Only
Bit
7
6
4
3
2
1
0
Field
SD
SD
SD
SD
SD
SD
SD
SD
0
7
6
5
4
3
2
1
Data Type: 8 Bit integer
USAGE: Write 0xe7 to set the chip to shutdown mode, use POWER_UP_RESET register (address 0x3a) to power up the
chip.
Reserved
Address: 0x3c
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PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
31
PIXART [ PIXART IMAGING INC. ]
