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US 6,959,257 B1Granted
Apparatus and method to test high speed devices with a low speed tester
AssigneeCypress Semiconductor Corporation
InventorsSteven P. Larky, Paul D. Berndt, Mike Lewis, Scott Swindle
Life of this patent
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Abstract
An apparatus coupled to a low speed tester and a device is disclosed. The device may have a first speed faster than a second speed of the low speed tester. The apparatus may be configured to allow the low speed tester to perform high speed tests of the device at the first speed.
Claims25
An apparatus comprising:
- a low speed tester;
- and
- a host emulator having (i) a first interface coupled to said low speed tester to receive a test vector at a first speed, (ii) a second interface configured to (a) transmit a first test packet to a device at a second speed faster than said first speed and (b) receive a response from said device and (iii) a third interface to said low speed tester to transfer a first done signal based upon said response, wherein said apparatus is configured to allow said low speed tester to perform high speed tests of said device at said second speed.
An apparatus comprising:
- means for transferring a test vector at a first speed from a low speed to a first interface of a host emulator;
- means for transmitting a first test packet from a second interface of said host emulator to a device at a second speed faster than said first speed;
- means for receiving a response from said device at said second interface;
- and
- means for transferring a first done signal based upon said response from a third interface of said host emulator to perform high speed tests of said device at said second speed.
2 more elements
A method for testing comprising the steps of:
- (A) transferring a test vector at a first speed from a low speed tester to a first interface of a host emulator;
- (B) transmitting a first test packet from a second interface of said host emulator at a second speed faster than said first speed to a device;
- (C) receiving a response from said device at said second interface;
- and
- (D) transferring a first done signal from a third interface of said host emulator to said low speed tester based upon said response to perform high speed tests of said device at said second speed.
2 more elements
Dependencies are inferred from the claim text.