Chapter 3 — Theory of Operation
76 CV30 Fixed Mount Computer Service Manual
• SMA Connector (IO Precise Corp12-21813)
All data line signals that enter or exit the terminal are ESD and EMI
protected to prevent damage to the terminal and to meet agency
requirements.
Clock Map
Use the following clock block diagram to understand the all clock
frequency used by the CV30 system.
Clock Block Diagram
104 Mhz
104 Mhz
24 Mhz
48 Mhz
25 Mhz
13 Mhz
CPU
BULVERDE
PXA270
520MHZ
AUDIO
CODEC
SDRAM
LCD
CONTROLLER
3.8MHZ
PIC
CONTROLLER
8MHZ
SD CARD
13MHZ
RTC
32KHZ
ETHERNET
CONTROLLER
FLASH ROM
USB
HUB
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