DLPA2005 datasheet(7/60 Pages) TI

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Table 5-6. Peripheral Interface(1)

PIN(1)

I/O

TYPE(3)

DESCRIPTION

NAME

NO.

CMP_OUT

A12

Successive approximation ADC (analog-to-digital converter) comparator output

(DLPC1438 Input). To implement, use a successive approximation ADC with

a thermistor feeding one input of the external comparator and the DLPC1438

controller GPIO_10 (RC_CHARGE) pin driving the other side of the comparator.

It is recommended to use the DLPAxxxx to achieve this function. CMP_OUT

must be pulled-down to ground if this function is not used. (hysteresis buffer)

CMP_PWM

A15

TI internal use. Leave this pin unconnected.

HOST_IRQ(2)

Host interrupt (output)

HOST_IRQ indicates when the DLPC1438 auto-initialization is in progress and

most importantly when it completes.

This pin is tri-stated during reset. An external pullup must be included on this

signal.

IIC0_SCL(4)

N10

I/O

I2C slave (port 0) SCL (bidirectional, open-drain signal with input hysteresis):

This pin requires an external pullup resistor. The slave I2C I/Os are 3.6-V tolerant

(high-voltage-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 a host supply with

an equal or higher supply voltage, up to a maximum of 3.6 V (a lower pullup

supply voltage does not typically satisfy the VIH specification of the slave I2C

input buffers).

IIC1_SCL

R11

I/O

TI internal use. TI recommends an external pullup resistor.

IIC0_SDA(4)

I/O

I2C slave (port 0) SDA. (bidirectional, open-drain signal with input hysteresis):

This pin requires an external pullup resistor. The slave I2C port is the control port

of controller. The slave I2C I/O pins are 3.6-V tolerant (high-volt-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 a host supply with an equal or higher supply

voltage, up to a maximum of 3.6 V (a lower pullup supply voltage does not

typically satisfy the VIH specification of the slave I2C input buffers).

IIC1_SDA

R10

I/O

TI internal use. TI recommends an external pullup resistor.

LED_SEL_0

B15

LED enable select. Automatically controlled by the DLPC1438 programmable

DMD sequence

LED_SEL(1:0)

Enabled LED

None

Red

Green

Blue

LED_SEL_1

B14

The controller drives these signals low when RESETZ is asserted and the

corresponding I/O power is supplied. The controller continues to drive these

signals low throughout the auto-initialization process. A weak, external pulldown

resistor is recommended to ensure that the LEDs are disabled when I/O power is

not applied.

SPI0_CLK

A13

SPI (Serial Peripheral Interface) port 0, clock. This pin is typically connected to

the flash memory clock.

SPI0_CSZ0

A14

SPI port 0, chip select 0 (active low output). This pin is typically connected to the

flash memory chip select.

TI recommends an external pullup resistor to avoid floating inputs to the external

SPI device during controller reset assertion.

SPI0_CSZ1

C12

SPI port 0, chip select 1 (active low output). This pin typically remains unused.

TI recommends an external pullup resistor to avoid floating inputs to the external

SPI device during controller reset assertion.

SPI0_DIN

B12

Synchronous serial port 0, receive data in. This pin is typically connected to the

flash memory data out.

SPI0_DOUT

B13

Synchronous serial port 0, transmit data out. This pin is typically connected to

the flash memory data in.

(1)

External pullup resistor must be 8 kΩ or less.

(2)

For more information about usage, see Section 7.3.3.

(3)

See Table 5-10 for type definitions.

www.ti.com

DLPC1438

DLPS216A – JULY 2021 – REVISED AUGUST 2021

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