SPEAR1340 datasheet(22/200 Pages) STMICROELECTRONICS

22 / 200 page

Device functions

SPEAr1340

22/200

Doc ID 023063 Rev 4

2.17

A/D converter (ADC)

SPEAr1340 integrates an analog-to-digital converter.

Main features:

●

Successive approximation A/D conversion

●

10-bit resolution for the analog cell which can be extended up to 12 bits with embedded

oversampling techniques performed by the controller

●

1 MSPS

●

8 analog input channels (0 – 2.5 V)

●

INL ± 1 LSB

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DNL ± 1 LSB

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Programmable conversion speed – minimum conversion time 1 µs

●

Support for resistive touchscreen

2.18

HDMI CEC interfaces (CEC)

The SPEAr1340 device integrates 2 instances of a Consumer Electronics Control (CEC)

digital block, identified as CEC0 and CEC1.

CEC is an asynchronous transfer mode adaptation layer (AAL) protocol that provides high-

level control functions among the various audiovisual products in a user’s environment. CEC

operates at low speeds, with minimal processing and memory overhead.

Main features:

●

AMBA 2.0 compatible

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One touch play: Play a device and make it the active source with the press of a button

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System standby: Set all devices to standby with the press of a button

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Preset transfer: Auto-configures device presets to match those of the TV

●

One-touch record: Enables one-button recording

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Timer programming: Any device can program a recording device’s timer

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System information: Devices can auto-configure their language and country settings

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Deck control: A device can control and interrogate a playback device

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Tuner control: A device can control the tuner of another device

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Vendor specific commands: Enables the use of vendor-defined commands

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On-screen display (OSD): A device can display text on the TV screen

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Device menu control: A device can control the menu of another device

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Routing control: Enables CEC switch control, to stream a new source device

●

Remote control pass through: Enables the passing on of remote control commands to

other devices

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Device OSD name transfer: System devices can request the preferred object-based

storage device (OSD) name of other system devices

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