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DSP56366P 数据表(PDF) 15 Page - Freescale Semiconductor, Inc |
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DSP56366P 数据表(HTML) 15 Page - Freescale Semiconductor, Inc |
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15 / 110 page  DSP56366 Technical Data, Rev. 3.1 Freescale Semiconductor 2-11 HA10 Input GPIO disconnected Host Address 10—When HDI08 is programmed to interface a multiplexed host bus and the HI function is selected, this signal is line 10 of the host address (HA10) input bus. PB13 Input, output, or disconnected GPIO disconnected Port B 13—When the HDI08 is configured as GPIO, this signal is individually programmed as input, output, or internally disconnected. The default state after reset for this signal is GPIO disconnected. This input is 5 V tolerant. HOREQ/ HOREQ Output GPIO disconnected Host Request—When HDI08 is programmed to interface a single host request host bus and the HI function is selected, this signal is the host request (HOREQ) output. The polarity of the host request is programmable, but is configured as active-low (HOREQ) following reset. The host request may be programmed as a driven or open-drain output. HTRQ/ HTRQ Output GPIO disconnected Transmit Host Request—When HDI08 is programmed to interface a double host request host bus and the HI function is selected, this signal is the transmit host request (HTRQ) output. The polarity of the host request is programmable, but is configured as active-low (HTRQ) following reset. The host request may be programmed as a driven or open-drain output. PB14 Input, output, or disconnected GPIO disconnected Port B 14—When the HDI08 is configured as GPIO, this signal is individually programmed as input, output, or internally disconnected. The default state after reset for this signal is GPIO disconnected. This input is 5 V tolerant. HACK/ HACK Input GPIO disconnected Host Acknowledge—When HDI08 is programmed to interface a single host request host bus and the HI function is selected, this signal is the host acknowledge (HACK) Schmitt-trigger input. The polarity of the host acknowledge is programmable, but is configured as active-low (HACK) after reset. HRRQ/ HRRQ Output GPIO disconnected Receive Host Request—When HDI08 is programmed to interface a double host request host bus and the HI function is selected, this signal is the receive host request (HRRQ) output. The polarity of the host request is programmable, but is configured as active-low (HRRQ) after reset. The host request may be programmed as a driven or open-drain output. PB15 Input, output, or disconnected GPIO disconnected Port B 15—When the HDI08 is configured as GPIO, this signal is individually programmed as input, output, or internally disconnected. The default state after reset for this signal is GPIO disconnected. This input is 5 V tolerant. Table 2-9 Host Interface (continued) Signal Name Type State during Reset Signal Description |
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