Intermec 073292-001 User Manual

VOL0  

VOL1 

VOL2 

Beep volume control 

000 = lowest volume 
111 = highest volume 

Scan_LED 

Scanner Good Read LED 

0 = LED off 
1 = LED on 

Scan_LED_High 

Good Read LED intensity control 

0 = low intensity 
1 = high intensity 

User_LED1 

User LED1 control 

0 = LED off 
1 = LED on 

User_LED2 

User LED2 control 

0 = LED off 
1 = LED on 

 

The I2C bus is used for power management functions and for control of 
the 2D imager, in CK30s so equipped. The PXA255 I2C controller is the 
bus master; the slave devices on the bus are: 

Power Supply Controller (PSC) U38 

0x12 

“PSC 12C Syntax” on page 59.  

2D imager engine 

0x40 

“2D Imagers” on page 80. 

 

 

 

The I2C bus CLK and DATA lines are pulled up through pull-up resistors 
R10 and R12. Pads for an active pull-up are provided (U1), but as of the 
current release this device is not installed. The PXA255 clocks the I2C bus 
at approximately 93kHz. 

The CK30 architecture uses an SRAM-based FPGA for the Mini PCI and 
scanner interfaces and for the keypad interface and a few GPIO functions. 
For details of each functional block within the FPGA, see the document 
section covering that function: 

Mini PCI interface: 

See “Mini PCI Interface” on page 69. 

Scanner interfaces: 

Keypad interface: 

Volume control: 

See “Beeper” on page 92.