AT209S Datasheet | Analog Microelectronics

Description 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 design plexity 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. PCI Arbiter and Clock Buffer n Features 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 l All AME's Lead Free Products Meet Ro HS Standards Rev.A.01 AME, Inc. AT209S n Pin Configuration PCI Arbiter and Clock Buffer NC P C IS T O P # S YS R E Q # S YS G N T # P C IR E Q 1 # .. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 AVCC P C IC L K I P C IR S T # AVSS VSS P C IC L K O U T P C IC L K 1 VCC P C IC L K 2 P C IC L K 3 P C IC L K 4 VSS NC NC VSS P C IG N T 1 # P C IR E Q 2 # VCC P C IG N T 2 # P C IR E Q 3 # P C IG N T 3 # NC NC A T 2 0 9 S 24 23 22 21 20 19 18 17 16 15 ¡° Ordering Information AT209S- mercial Standard AT209SG- Green Device with mercial Standard Rev.A.01 AME, Inc. AT209S n Pin Description I/O Type IN OUT PWR PCI Arbiter and Clock Buffer Function Input Pin Output Pin Power Pin .. Pin No. 26 2 3 4 5 7 8 10 11 12 Pin Name PCIRST# PCISTOP# SYSREQ# SYSGNT# PCIREQ1# PCIGNT1# PCIREQ2#...