AME, Inc.
AT123S
n
General Description
AT123S is a PCI arbiter. It allows users to extend sys-
tem PCI devices or slots without piecing additional cir-
cuit to simply design complexity and increase system
stability. AT123S also provides STOP# input pin with
that extended PCI devices is able to instruct the PCI
master to prematurely end the transaction on the current
data phase same as one defined in PCI specification.
PCI Arbiter
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
All AME's Lead Free Products Meet RoHS
Standards
n
Pin Configuration
SYSREQ #
SYSGNT #
PCIREQ1#
VSS
PCIGNT1#
PCIREQ2#
VCC
PCIGNT2#
1
2
3
4
5
6
7
8
16
15
STOP#
VCC
PCICLKi
PCIRESET#
VSS
VCC
PCIGNT3#
PCIREQ3#
A
T
1
2
3
S
14
13
12
11
10
9
※
Ordering Information
AT123S- Commercial Standard
AT123SG- Green Device with Commercial Standard
Rev.A.01
1
AME [ ANALOG MICROELECTRONICS ]
