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TUSB3200CPAH 数据表(PDF) 14 Page - Texas Instruments |
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TUSB3200CPAH 数据表(HTML) 14 Page - Texas Instruments |
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14 / 93 page  1–8 1.7 Terminal Functions – External MCU Mode (Continued) TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION MCUAD1 25 I/O MCU multiplexed address/data bit 1: Multiplexed address bit 1/data bit 1 for external MCU access to the TUSB3200 external data memory space. MCUAD2 26 I/O MCU multiplexed address/data bit 2: Multiplexed address bit 2/data bit 2 for external MCU access to the TUSB3200 external data memory space. MCUAD3 28 I/O MCU multiplexed address/data bit 3: Multiplexed address bit 3/data bit 3 for external MCU access to the TUSB3200 external data memory space. MCUAD4 29 I/O MCU multiplexed address/data bit 4: Multiplexed address bit 4/data bit 4 for external MCU access to the TUSB3200 external data memory space. MCUAD5 30 I/O MCU multiplexed address/data bit 5: Multiplexed address bit 5/data bit 5 for external MCU access to the TUSB3200 external data memory space. MCUAD6 31 I/O MCU multiplexed address/data bit 6: Multiplexed address bit 6/data bit 6 for external MCU access to the TUSB3200 external data memory space. MCUAD7 32 I/O MCU multiplexed address/data bit 7: Multiplexed address bit 7/data bit 7 for external MCU access to the TUSB3200 external data memory space. MCUA8 14 I MCU address bit 8: Multiplexed address bit 8 for external MCU access to the TUSB3200 external data memory space. MCUA9 15 I MCU address bit 9: Multiplexed address bit 9 for external MCU access to the TUSB3200 external data memory space. MCUA10 18 I MCU address bit 10: Multiplexed address bit 10 for external MCU access to the TUSB3200 external data memory space. MCUALE 19 I MCU address latch enable: Address latch enable for external MCU access to the TUSB3200 external data memory space. MCUINTO 20 O MCU interrupt output: Interrupt output to be used for external MCU INTO input signal. All internal TUSB3200 interrupt sources are ORed together to generate this output signal. MCURD 23 I MCU read strobe: Read strobe for external MCU read access to the TUSB3200 external data memory space. MCUWR 22 I MCU write strobe: Write strobe for external MCU write access to the TUSB3200 external data memory space. MRESET 10 I Master reset: An active low asynchronous reset for the device that resets all logic to the default state. This signal uses a 3.3-V TTL/LVCMOS input bufer. Not Used 4 O This pin is not used in the normal mode. PLLFILI 52 I PLL loop filter input: Input to on-chip PLL from external filter components. PLLFILO 1 O PLL loop filter output: Output to on-chip PLL from external filter components. PUR 6 O USB data signal plus pullup resistor connect: PUR is used to connect the pullup resistor on the DP signal to 3.3-V or a 3-state. When the DP signal is connected to 3.3-V the host PC should detect the connection of the TUSB3200 device to the universal serial bus. This signal uses a 3.3-V TTL/LVCMOS output buffer. PWMO 3 O PWM output: Output of the pulse width modulation circuit. This signal uses a 3.3-V to 5-V CMOS level shifting output buffer. RSTO 13 O Reset output: Output that is active while the master reset input or the USB reset is active. This signal uses a 3.3-V TTL/LVCMOS output buffer. SCL 42 O I2C interface serial clock: SCL is the clock signal for the I2C serial interface. This signal uses a 3.3-V to 5-V TTL level shifting open drain output buffer. SDA 41 I/O I2C interface serial data input/output: SDA is the bidirectional data signal for the I2C serial interface. This signal uses a 3.3-V to 5-V TTL level shifting open drain output buffer and a 5-V to 3.3-V TTL level shifting input buffer. TEST 11 I Test mode enable: Input used to enable the device for the factory test mode. This signal uses a 3.3-V TTL/ LVCMOS input buffer. XINT 17 I External interrupt: An active low input used by external circuitry to interrupt the on-chip 8052 MCU. This signal uses a 5-V compatible input buffer. XTALI 51 I Crystal input: Input to the on-chip oscillator from an external 6-MHz crystal. XTALO 50 O Crystal output: Output from the on-chip oscillator to an external 6-MHz crystal. |
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