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STPC12GDYC 数据表(PDF) 14 Page - STMicroelectronics |
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STPC12GDYC 数据表(HTML) 14 Page - STMicroelectronics |
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14 / 111 page  PIN DESCRIPTION 14/111 Issue 1.0 - July 24, 2002 Table 2-2. Definition of Signal Pins Signal Name Dir Buffer Type1 Description Qty BASIC CLOCKS AND RESETS SYSRSTI# I SCHMITT_FT System Reset / Power good 1 SYSRSTO# O BD8STRP_FT Reset Output to System 1 XTALI I OSCI13B 14.31818 MHz Crystal Input External Oscillator Input 1 XTALO O 14.31818 MHz Crystal Output 1 PCI_CLKI I TLCHT_FT 33 MHz PCI Input Clock 1 PCI_CLKO O BT8TRP_TC 33 MHz PCI Output Clock 1 ISA_CLK, ISA_CLK2X O BT8TRP_TC ISA Clock x1 and x2 Multiplexer Select Line for IPC 2 OSC14M O BD8STRP_FT ISA bus synchronisation clock 1 HCLK I/O BD4STRP_FT 66 MHz Host Clock (Test pin) 1 DEV_CLK O BT8TRP_TC 24 MHz Peripheral Clock 1 DCLK I/O BD4STRP_FT 135 MHz Dot Clock 1 VDD_xxx_PLL 2.5V Power Supply for PLL Clocks 7 MEMORY CONTROLLER MCLKI I TLCHT_TC Memory Clock Input 1 MCLKO O BT8TRP_TC Memory Clock Output 1 CS#[1:0] O BD8STRP_TC DIMM Chip Select 2 CS#[3]/MA[12]/BA[1] O BD16STARUQP_TC DIMM Chip Select Memory Address Bank Address 1 CS#[2]/MA[11] O BD16STARUQP_TC DIMM Chip Select Memory Address 1 MA[10:0] O BD16STARUQP_TC Memory Row & Column Address 11 BA[0] O BD16STARUQP_TC Bank Address 1 RAS#[1:0] O BD16STARUQP_TC Row Address Strobe 2 CAS#[1:0] O BD16STARUQP_TC Column Address Strobe 2 MWE# O BD16STARUQP_TC Write Enable 1 MD[0] I/O BD8STRUP_FT Memory Data 1 MD[53:1] I/O BD8TRP_TC Memory Data 53 MD[63:54] I/O BD8STRUP_FT Memory Data 10 DQM[7:0] O BD8STRP_TC Data Input/Ouput Mask 8 PCI INTERFACE AD[31:0] I/O BD8PCIARP_FT Address / Data 32 CBE[3:0] I/O BD8PCIARP_FT Bus Commands / Byte Enables 4 FRAME# I/O BD8PCIARP_FT Cycle Frame 1 TRDY# I/O BD8PCIARP_FT Target Ready 1 IRDY# I/O BD8PCIARP_FT Initiator Ready 1 STOP# I/O BD8PCIARP_FT Stop Transaction 1 DEVSEL# I/O BD8PCIARP_FT Device Select 1 PAR I/O BD8PCIARP_FT Parity Signal Transactions 1 PERR# I/O BD8PCIARP_FT Parity Error 1 SERR# O BD8PCIARP_FT System Error 1 LOCK# I TLCHT_FT PCI Lock 1 PCI_REQ#[2:0] I BD8PCIARP_FT PCI Request 3 PCI_GNT#[2:0] O BD8PCIARP_FT PCI Grant 3 PCI_INT#[3:0] I BD4STRUP_FT PCI Interrupt Request 4 Note1; See Table 2-3 for buffer type descriptions |
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