AME, Inc.

Rev.A.01

1

AT209S

PCI Arbiter and Clock Buffer

l PCI Arbiter

Extend PCI Devices from One to Three

l PCI Clock Frequency

Support PCI Clock range from 25MHz to

66MHz

l Zero delay buffer

Generate four zero delay clock sources

Support frequency range from 25MHz to

66MHz

The AT209S is an integrated device that contains a PCI

Arbiter and a Clock Buffer. PCI Arbiter extends system

PCI devices without piecing other circuit to simplify de-

sign complexity and increase systems stability.

PCI Arbiter also provides STOP# input pin with that

extended PCI devices instruct the master to prematurely

end the transaction on the current data phase same as

one in PCI specification.

Clock Buffer is a high performance and low jitter zero

delay buffer that provides synchronization between the

input and output. The synchronization is established via

CLKO feed back to the input of a build-in PLL.

PCICLKI is the clock input of the Clock Buffer. In the

absence of PCICLKI input, will be in the power down mode.

In this mode, the PLL is turned off and the output buffers

are pulled low. Power down mode provides the lowest

power consumption for a standby condition.

n General Description

n Features

l All AME's Lead Free Products Meet RoHS

Standards