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STPD0175BTC3 Folha de dados(PDF) 11 Page - STMicroelectronics |
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STPD0175BTC3 Folha de dados(HTML) 11 Page - STMicroelectronics |
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11 / 48 page  PIN DESCRIPTION Issue 1.7 - February 8, 2000 11/48 2.PIN DESCRIPTION 2.1. INTRODUCTION The STPC Client integrates most of the functional- ities of the PC architecture. As a result, many of the traditional interconnections between the host PC microprocessor and the peripheral devices are totally assimilated to the STPC Client. This offers improved performance due to the tight coupling of the processor core and its peripherals. As a result many of the external pin connections are made di- rectly to the on-chip peripheral functions. Figure 2-1 shows the STPC Client’s external inter- faces. It defines the main busses and their func- tion. Table 2-1 describes the physical implementa- tion listing signals type and their functionality. Ta- ble 2-2 provides a full pin listing and description of the pins. Table 2-3 provides a full listing of pin lo- cations of the STPC Client package by physical connection. Please refer to the pin allocation drawing for reference. Note: Several interface pins are multiplexed with other functions, refer to the Pin Description sec- tion for further details Table 2-1. Signal Description Group name Qty Basic Clocks reset & Xtal (SYS) 14 Memory Interface (DRAM) 89 PCI interface (excluding VDD5) 54 ISA / IDE / IPC combined interface 83 Video Input (VIP) 9 TV Output (TV) 10 VGA Monitor interface (VGA) 10 Grounds 69 VDD 26 Analog specific VCC/VDD 14 Reserved/Test/ Misc./ Speaker 10 Total Pin Count 388 Figure 2-1. STPC Client External Interfaces SOUTH NORTH PCI X86 DRAM VGA VIP TV SYS ISA/IDE IPC 89 10 9 10 54 14 73 10 STPC CLIENT |
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