CS22230 Datasheet, PDF (4/29 Pages) Cirrus Logic – WIRELESS PCI/USB CONTROLLER

3 Functional Description
Figure 2. Block Diagram of Major Functional Units
USB / Mini PCI
Host Interface
12MHz
or
33 MHz
Mini PCI
Interface
USB
Interface
DMA
CTR
Comm
Buffer
DMA
Memory/Boot ROM
Controller
Arbiter
Read/Write Buffer
ARM 7TDMI
Interrupt
controller
Timer
(2)
4KB
Cache
DMA
JTAG/Test Interface
Dual Radio
MAC
W/ DMA Ctrl
Radio
Interface
44MHz
77MHz System Control Bus
Sleep
Timer
FEC
CODEC
Misc.
Config.
Clock/PLL
48MHz / 44 MHz
Oscillator
CS22230 Mini PCI / USB Wireless Controller
4 of 29
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