ICS1531 datasheet(16/76 Pages) ICST

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ICS1531 Rev N 12/1/99

December, 1999

Chapter 3

Pin Diagram and Listings

ICS1531 Data Sheet - Preliminary

3.2.3.6

Ground Pins

Table 3-8.

Ground Pins

Pin Name

Pin Description

VSS

Ground for (Analog Inputs for Digital Pixel PLL Circuitry).

• These pins are used to ground digital portions of the pixel PLL circuitry that receive analog inputs.

• The VSSD pin must also be connected to these pins.

VSSA

Ground for Analog (Pixel PLL Circuitry).

This pin is used to ground the analog portions of the pixel PLL circuitry.

VSSAADC

Ground for Analog ADC (Circuitry).

These pins are used to ground the analog portions of the ADC.

VSSD

Ground for Digital (Pixel PLL and Circuitry for Industry-Standard 2-Wire Serial Interface).

This pin is used to ground the digital portions of the pixel PLL circuitry and the circuitry for an

industry-standard 2-wire serial interface.

VSSDADC

Ground for Digital ADC (Circuitry).

This pin is used to ground the digital portions of the ADC.

VSSMCLK

Ground for Memory Clock (Circuitry).

This pin is used to ground the circuitry for the memory clock PPL (that is, MCLK).

VSSPCLK

Ground for Panel Clock (Circuitry).

This pin is used to ground the circuitry for the panel clock PLL (that is, PNLCLK).

VSSQ

Ground for Output Drivers.

This pin is used to ground output drivers for the pixel PLL circuitry.

VSSQADC

Ground for Output Drivers for ADC.

These pins are used to ground the pixel data output drivers for the analog-to-digital converter.

VSSSUB

Ground for Substrate.

These pins are used to provide ground for the chip substrate.

VSS(TEST)

Ground (Normal Mode) or Test Mode.

• Normal Mode.

– Typically, this pin must be connected to ground (the Normal mode).

– When the ICS1531 is in Normal mode, the Calibration registers 38h to 3Ch can be enabled by

using Reg 37:3. (See Section 6.5.39, “Register 37h: PSEL”.)

• Test Mode.

For the VSS(TEST) pin’s Test-mode function, see Table 3-4.

VSSXTL

Ground for Crystal Oscillator.

This pin is used to ground the internal crystal oscillator circuitry.

VSS(TEST)

ICS1531

In Normal mode, use Reg 37:3 to

enable Calibration Regs 38h to 3Ch.

Normal Mode

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