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PPC34C60 数据表(PDF) 11 Page - SMSC Corporation |
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PPC34C60 数据表(HTML) 11 Page - SMSC Corporation |
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11 / 58 page ![]() SMSC DS – PPC34C60 Page 11 Rev. 06/01/2001 ADVANCED INFORMATION 1.1 Buffer Type Descriptions BUFFER TYPE DESCRIPTION I I/O8 I/O16 O8 O16 O24 PU PD Input, Schmitt Trigger Input, Schmitt Trigger/8mA Output Input, Schmitt Trigger/16mA Output 8mA Output 16mA Output 24mA Output Pull Up, nominal 100K Pull Down, nominal 100K 1.2 General Conventions Throughout this document, the following various terms and conventions will be used: Compatible = "Centronics" SPP = "Standard Bi-Directional Parallel Port" (PS/2) EPP = "Enhanced Parallel Port" ECP = "Extended Capabilities Port" 1.3 Reference Documents IEEE STD 1284, February 2, 1993. The Enhanced Parallel Port, an Introduction; FarPoint Communications. Daisy Chain Specification, Rev. 1.1, September 16, 1993; Disctec Corporation. Enhanced Parallel Port BIOS Specification, Rev 3, February 12, 1993; FarPoint Communications. ECP: Specification Kit, Rev 1.03, February 10, 1993; Microsoft Corporation. |
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