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STLC1502 数据表(PDF) 7 Page - STMicroelectronics |
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STLC1502 数据表(HTML) 7 Page - STMicroelectronics |
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7 / 81 page ![]() 7/81 STLC1502 153, 154, 155 esmcs[0..2]n Chip select [0..2] for external memory (FLASH/SRAM). At power up or hardware reset, if external boot ROM has been selected, (bootsel =’1’) the signal is asserted during the fetch instruction, else the selection depends on internal address mapping 4mA O 61 ecs0width External FLASH/SRAM Data bus size: if settled to ‘L’, select a 8 bit parallelism data. I EDM ( specific controls) 156, 158, 159, 160 edmcsn[0..3] Chip select for SDRAM or RAS for EDO DRAM 8mA O 161 edmclken SDRAM clock enable 8mA O 162 edmoclk SDRAM output clock 8mA O 165 edmras SDRAM ras command 8mA O 166 edmcas SDRAM cas command 8mA O 167 edmwe SDRAM we command 8mA O MII Interface Port # 1 168 mii1_txen Transmit enable 4mA O 169 mii1_txclk Transmit clock reference for txd, txen, txer I 170, 171, 174, 175 mii1_txd[0..3] Transmit data bus 4mA O 176 mii1_rxclk Receive clock reference for rxd, rxdv, rxer I 177 mii1_rxdv Receive data valid I 178 mii1_rxer Receive error signal, indicates an error condition on receiving data I 181, 182, 183, 184 mii1_rxd[0..3] Receive data bus I 185 mii1_col Collision signal I 186 mii1_crs Carrier sense indication I MII Interface Port # 2 193 mii2_txclk Transmit clock reference for txd, txen, txer I 194 mii2_txen Transmit enable 4mA O 195, 196, 197, 198 mii2_txd[0..3] Transmit data bus 4mA O Pin Pin Name Pin Description/Note Pin Drive Pin Type |
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