AME, Inc. AT123S PCI Arbiter n General Description n Features AT123S is a PCI arbiter. It allows users to extend system PCI devices or slots without piecing additional circuit 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. 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 # 1 16 STOP# SYSGNT # 2 15 VCC PCIREQ1# 3 14 PCICLKi VSS 4 13 PCIRESET# PCIGNT1# 5 12 VSS PCIREQ2# 6 11 VCC VCC 7 10 PCIGNT3# PCIGNT2# 8 9 PCIREQ3# A T 1 2 3 S ※ Ordering Information AT123S- Commercial Standard AT123SG- Green Device with Commercial Standard Rev.A.01 1 AME, Inc. AT123S PCI Arbiter n Pin Description I/O Type Function INt TTL level input PP12 Push pull output with 12mA sink current PWR Power Pin Pin No. Pin Name I/O Type Function 1 SYSREQ# PP12 Request signal to chipset 2 SYSGNT# INt Grant signal from chipset 3 PCIREQ1# INt Request signal from PCI bus (Internal 5K pull-up resistor) 5 PCIGNT1# PP12 6 PCIREQ2# INt 8 PCIGNT2# PP12 9 PCIREQ3# INt 10 PCIGNT3# PP12 13 PCIRESET# INt PCI bus reset# 14 PCICLKi INt PCICLK input reference frequency 16 STOP# INt PCI bus stop# 4 VSS PWR Ground 7 VCC PWR 3.3V Power 11 VCC PWR 3.3V Power 12 VSS PWR Ground 15 VCC PWR 3.3V Power Grant signal to PCI bus Request signal from PCI bus (Internal 5K pull-up resistor) Grant signal to PCI bus Request signal from PCI bus (Internal 5K pull-up resistor) Grant signal to PCI bus Table 1. PCI Arbiter FSM Group Signal 2 Rev.A.01 AME, Inc. AT123S PCI Arbiter n Quick Reference Data GND = 0V; VCC = 3.3V; 0oC < Temp. < 85oC Symbol Parameter VCC Power pin VSS Ground pin Test Conditions Min Typical 3.15 3.3 Max Unit V 3.45 0 V Table 2. Power/Ground Pin Symbol Parameter Vil Input low voltage Vih Input high voltage Vol Output low voltage Voh Output high voltage Tdcko Output delay from PCICLK rising edge to output valid PCICLKI Buffer input frequency Test Conditions Min Typical Max Unit 0.8 V 2 V 0.4 2.4 nS 8 25M V 10 nS 66M Hz Table 3. PCI Arbiter FSM Rev.A.01 3 AME, Inc. AT123S PCI Arbiter n Package Dimension SOP-16 TOP VIEW 16 SYMBOLS 9 H E 8 1 b e MILLIMETERS INCHES MIN MAX MIN MAX A 1.35 1.75 0.053 0.069 A1 0.10 0.25 0.004 0.010 b 0.40TYP 0.018TYP C 0.20TYP 0.008TYP e 1.27TYP 0.050TYP E 3.81 4.00 0.150 0.157 D 9.80 10.00 0.386 0.394 h 0.38TYP 0.015TYP FRONT VIEW H 5.80 6.20 0.228 0.244 D L 0.41 1.27 0.016 0.050 θ 0o 8o 0o 8o A SEATING PLANE 0.004 max A1 SIDE VIEW h A" 0' DETAL : A" L C 4 Rev.A.01 www.ame.com.tw E-Mail: [email protected] Life Support Policy: These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of AME, Inc. AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. AME, Inc. , July 2007 Document: ATT-DSAT123S-A.01 Corporate Headquarter U.S.A. (Subsidiary) AME, Inc. Analog Microelectronics, Inc. 2F, 302 Rui-Guang Road, Nei-Hu District 3100 De La Cruz Blvd., Suite 201 Taipei 114, Taiwan. Tel : 886 2 2627-8687 Santa Clara, CA. 95054-2046 Tel: (408) 988-2388 Fax: 886 2 2659-2989 Fax: (408) 988-2489