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DLPC3433ZVB Datasheet(PDF) 10 Page - Texas Instruments |
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DLPC3433ZVB Datasheet(HTML) 10 Page - Texas Instruments |
10 / 62 page DLPC3433, DLPC3438 DLPS035B – FEBRUARY 2014 – REVISED JANUARY 2016 www.ti.com Pin Functions – Peripheral Interface(1) PIN I/O DESCRIPTION NAME NUMBER Successive approximation ADC comparator output (DLPC343x Input). Assumes a successive approximation ADC is implemented with a WPC light sensor and/or a thermistor feeding one input of CMP_OUT A12 I6 an external comparator and the other side of the comparator is driven from the ASIC’s CMP_PWM pin. Should be pulled-down to ground if this function is not used. (hysteresis buffer) Successive approximation comparator pulse-duration modulation (output). Supplies a PWM signal to CMP_PWM A15 O1 drive the successive approximation ADC comparator used in WPC light-to-voltage sensor applications. Should be left unconnected if this function is not used. Host interrupt (output) This signal has two primary uses. The first use is to indicate when DLPC343x auto-initialization is in progress and most importantly when it completes. The second is to indicate when service is requested HOST_IRQ(2) N8 O9 (that is an interrupt request). The DLPC343x tri-states this output during reset and assumes that an external pullup is in place to drive this signal to its inactive state. I2C slave (port 0) SCL (bidirectional, open-drain signal with input hysteresis): An external pullup is required. The slave I2C I/Os are 3.6-V tolerant (high-volt-input tolerant) and are powered by VCC_INTF IIC0_SCL N10 B7 (which can be 1.8, 2.5, or 3.3 V). External I2C pullups must be connected to an equal or higher supply voltage, up to a maximum of 3.6 V (a lower pullup supply voltage would not likely satisfy the VIH specification of the slave I2C input buffers). Reserved R11 B8 TI internal use. TI recommends an external pullup resistor. I2C slave (port 0) SDA. (bidirectional, open-drain signal with input hysteresis): An external pullup is required. The slave I2C port is the control port of ASIC. The slave I2C I/Os are 3.6-V tolerant (high-volt- IIC0_SDA N9 B7 input tolerant) and are powered by VCC_INTF (which can be 1.8, 2.5, or 3.3 V). External I2C pullups must be connected to an equal or higher supply voltage, up to a maximum of 3.6 V (a lower pullup supply voltage would not likely satisfy the VIH specification of the slave I2C input buffers). Reserved R10 B8 TI internal use. TI recommends an external pullup resistor. LED enable select. Controlled by programmable DMD sequence Timing Enabled LED LED_SEL(1:0) DLPA200x application LED_SEL_0 B15 O1 00 None 01 Red 10 Green 11 Blue These signals will be driven low when RESETZ is asserted and the corresponding I/O power is supplied. They will continue to be driven low throughout the auto-initialization process. A weak, LED_SEL_1 B14 O1 external pulldown resistor is still recommended to ensure that the LEDs are disabled when I/O power is not applied. SPI0_CLK A13 O13 Synchronous serial port 0, clock SPI port 1, chip select 0 (active low output) SPI0_CSZ0 A14 O13 TI recommends an external pullup resistor to avoid floating inputs to the external SPI device during ASIC reset assertion. SPI port 1, chip select 1 (active low output) SPI0_CSZ1 C12 O13 TI recommends an external pullup resistor to avoid floating inputs to the external SPI device during ASIC reset assertion. SPI0_DIN B12 I12 Synchronous serial port 0, receive data in SPI0_DOUT B13 O13 Synchronous serial port 0, transmit data out (1) External pullup resistor must be 8 k Ω or less. (2) For more information about usage, see HOST_IRQ Usage Model. 10 Submit Documentation Feedback Copyright © 2014–2016, Texas Instruments Incorporated Product Folder Links: DLPC3433 DLPC3438 |
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