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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TUSB5052 датащи(PDF) 16 Page - Texas Instruments |
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TUSB5052 датащи(HTML) 16 Page - Texas Instruments |
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16 / 84 page  3–4 Table 3–2. Internal/External Microcontroller Signals Defintion EXTEN* =1; INTERNAL MICROCONTROLLER EXTEN* =0; EXTERNAL MICROCONTROLLER P1.[7–0] Port-1: 8-bit GPIO I/O P0.[7–0] 8-Bit data/address bus I/O P3.0 GPIO/ RxD I/O AD8 Address line A8 I P3.1 GPIO/ TxD I/O AD9 Address line A9 I P3.3 GPIO/INT1* I/O AD10 Address line A10 I P3.4 GPIO/T0 I/O P3.4 Address line A15 I LED–1 LED-1 output O ALE Address latch enable I LED–2 LED-2 output O XINTO* Interrupt output O LED–3 LED-3 output O WR* External data memory write strobe I LED–4 LED-4 output O RD* External data memory read strobe I 3.1 Hub-Ports LED Status Definition Four LED outputs are provided to indicate the corresponding USB port states (LED-1 corresponds to Port-1, etc.). All the LED signals are CMOS with ±4-mA sink/drive capability. Table 3–3 describes the LED signal level with its corresponding port states. The colors generated correspond to the circuit implementation shown in Figure 3–2. Table 3–3. Relation Between LEDs Signal and Hub-Port States PORT-POWERED ENABLED OR SUSPENDED DEVICE CONNECTED SUSP- SIGNAL LEDn OUTPUT COLOR No X X 1 Flash (see Note 9) Red/Green Yes X No 1 1 Red Yes Yes Yes 1 0 Green Yes No Yes 1 Flash (see Note 9) Red/Green X X X 0 3-State Blank NOTE 6: LED output is 512 ms on and 512 ms off Green Red 1.5 k Ω 1.5 k Ω 1.5 k Ω LEDn SUSP To All LEDs Figure 3–2. Dual LED Connection to LED and SUSP Signals |
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