Board level serial digital interface testing

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Digital Interface Tests

RELEVANT PRODUCTS

VSIO Adapter

dScope Series III

The dScope Series III allows easy testing of board-level serial interfaces such as I2S using Prism Sound’s dS-NET VSIO Adapter peripheral. This is an interface adapter that allows bi-directional translation between the dScope's AES3 output and input, and serial audio multiplex interfaces (for example I2S) such as are commonly found on digital audio ICs.

The dS-NET VSIO Adapter is connected to the dScope using the dS-NET interface, and is fully controllable either from the dScope’s user interface or via automation from a VBScript or directly from a PC serial port. In addition, the adapter’s channels can be set up to be the source for a Sweep, allowing fast analysis of all channels on the interface at the touch of a button.

Features
The exact timing arrangements of the serial multiplex and its electrical properties (such as rail voltage) can be freely adjusted by the user. The VSIO Adapter can transact up to 16 multiplexed channels on a single wire, or up to eight on each of two wires, or up to four on each of four wires. Each VSIO output 'slot' (channel) can be driven from the dScope Signal Generator's A or B channel, or can be muted; any two VSIO input slots (channels) can be routed to the dScope's Signal Analyzer. Audio wordlengths between 8 and 24 bits can be positioned anywhere within a slot length of 8, 16, 24 or 32 bits; data can be transacted MSB- or LSB-first. Clock polarities and multipliers can be freely selected; frame clocks can be generated one-bit-early or single-bit-width if required; sign extension is supported. Synchronisation can be from the dScope of from the EUT (either SCK/LRCK or MCK), and EUT rail voltages of 1.8V, 2.5V, 3.3V or 5V (TTL or CMOS threshold) are supported.

As well as carrying out the audio transcoding function, the VSIO also provides a versatile I2C / SPI control port which can be used to control component-level devices on the EUT during testing.

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App ID: 0006, Resource ID: 77