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CS22210 Datasheet, PDF (17/31 Pages) Cirrus Logic – WIRELESS PCI/USB CONTROLLER
nSERR
nREQ
Output/Open Drain
PCI system error. This open drain signal is used to indicate a fatal parity
error on PCI address.
Input
PCI master request. Used by the PCI master to indicate it needs to drive
the PCI bus.
nGNT
PAR
PME
System Reset
nRST
USB Interface
USBVP
USBVM
USB_ENUM
Bi-directional
PCI master grant. Used by the PCI master to indicate OK to drive the PCI
bus.
Bi-directional
PCI parity. This signal is asserted one clock after data transfer has
occurred on the PCI bus.
Output/Open Drain
Power management event. Use to let the system knows a change in
power management event has occurred.
Input
System reset and PCI reset. Reset is an asynchronous signal that forces
the chip to go to a known state. This is an active low signal.
Bi-directional
Differential USB data plus. For high-speed mode, this signal is pull up to 5
volt during IDLE state (see USB_ENUM).
.
Bi-directional
Differential USB data minus.
Output
USB enumeration. Indicates a disconnect/connect event. USB_ENUM is
used to pull the D+ line high, indicating to the host or hub a USB bus “full
rate” connection is active.
CS22210 PCI/USB Wireless Controller
17 of 31
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