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MCF5251 bảng dữ liệu(PDF) 7 Page - Freescale Semiconductor, Inc |
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MCF5251 bảng dữ liệu(HTML) 7 Page - Freescale Semiconductor, Inc |
7 / 32 page Signal Description MCF5251 ColdFire Processor Data Sheet: Technical Data, Rev. 2.1 Freescale Semiconductor 7 ISA bus read strobe IDE_DIOR/GPIO31 (CS2) 1 ISA bus read strobe and 1 ISA bus write strobe—allow connection of an independent ISA bus peripheral, such as an IDE slave device. In/Out – ISA bus write strobe IDE_DIOW/GPIO32 (CS2) In/Out – ISA bus wait signal IDE_IORDY/GPIO33 ISA bus wait line available for both busses In/Out – Chip Selects[2:0] CS0/CS4 CS1/QSPICS3/GPIO28 Chip selects bits 2 through 0— enable peripherals at programmed addresses. CS0 provides boot ROM selection. Out In/Out negated Buffer enable 1 BUFENB1/GPIO29 Two programmable buffer enables—allow seamless steering of external buffers to split data and address bus in sections. In/Out – Buffer enable 2 BUFENB2/GPIO30 In/Out – Transfer acknowledge TA/GPIO12 Transfer Acknowledge signal. In/Out – Wake Up WAKEUP/GPIO21 Wake-up signal input In – Serial Clock Line SCL0/SDATA1_BS1/GPIO41 SCL1/TXD1/GPIO10 Clock signal for Dual I2C module operation In/Out – Serial Data Line SDA0/SDATA3/GPIO42 SDA1/RXD1/GPIO44 Serial data port for second I2C module operation In/Out – Receive Data SDA1/RXD1/GPIO44 RXD0/GPIO46 EF/RXD2/GPIO6 Receive serial data input for UART In – Transmit Data SCL1/TXD1/GPIO10 TXD0/GPIO45 XTRIM/TXD2/GPIO0 Transmit serial data output for UART Out – Request-To-Send DDATA3/RTS0/GPIO4 DDATA1/RTS1/SDATA2_BS2/GPIO2 Signals sent from UART0/1 that it is ready to receive data Out – Clear-To-Send DDATA2/CTS0/GPIO3 DDATA0/CTS1/SDATA0_SDIO1/GPIO1 Signals sent to UART0/1 that data can be transmitted to peripheral In – Timer Output SDATAO1/TOUT0/GPIO18 Capability of output waveform or pulse generation Out – IEC958 inputs EBUIN1/GPIO36 EBUIN2/SCLKOUT/GPIO13 EBUIN3/CMD_SDIO2/GPIO14 QSPICS0/EBUIN4/GPIO15 Audio interfaces to IEC958 inputs In – IEC958 outputs EBUOUT1/GPIO37 QSPICS1/EBUOUT2/GPIO16 Audio interfaces to IEC958 outputs Out – Serial data in SDATAI1/GPIO17 SDATAI3/GPIO8 Audio interfaces to serial data inputs In – Table 3. MCF5251 Signal Index (continued) Signal Name Mnemonic Function Input/ Output Reset State |
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Mô tả tương tự - MCF5251 |
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