Soubor:Usbkey-internal.jpg

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Velikost tohoto náhledu je: 625 × 599 pixelů
Obrázek ve vyšším rozlišení‎ (rozměr: 1 000 × 959 pixelů, velikost souboru: 490 kB, MIME typ: image/jpeg)

Fotografie interních komponent + klasického USB klíče

1. A male type-A USB connector.
2. An Ours Technology Inc. OTi-2168 USB 2.0 mass storage controller. This implements the USB 2.0 host controller, and provides a seamless linear interface to block-oriented serial flash devices, while hiding the complexities of block-orientation, block erasure, and wear balancing. It contains a small RISC microprocessor and a small amount of ROM and RAM. This communicates with the Hynix device over an 8-line unified address/data bus. This version is a 7x7mm 48-pin LQFP (Low Profile Quad Flat Pack) surface-mount device (info).
3. JP1 and JP2: two unpopulated 10-pin connectors, used for testing during the keydrive's manufacture.
4. A Hynix Semiconductor HY27USxx121M series NAND Flash memory device, featuring 4096 independently erasable blocks each providing 16 Kbytes of storage, yielding a total of 64 Mbytes of usable storage. The version used in this keydrive is a 20x12mm 48-pin TSOP1 (Thin Small Outline Package) surface-mount package (info)[dead link] (datasheet).
5. An SKC Shin Chang Electronics 12.000 MHz crystal oscillator (XTAL). The OTi device runs the output of this through a phase-locked loop to produce its main 12 MHz clock signal.
6. A single yellow light-emitting diode (run from a pin on the OTi device) which flashes to indicate activity.
7. A simple two-position switch, used to indicate whether the device should be in "write-protect" mode. It is shown here in the make position, indicating write-protect is off.
8. An unpopulated space for a second TSOP1 memory package. The OTi device is capable of driving up to eight such devices. Having this second space allows the manufacturer to choose (generally on a cost basis) whether to use one or two TSOP flash parts.

+ pochází z Wikimedia Commons, kde má status - GNU Free Documentation License, Version 1.2 or any later version (autor: Solipsist)

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	Datum a čas	Náhled	Rozměry	Uživatel	Komentář
současná	12. 6. 2013, 21:07		1 000×959 (490 kB)	Sysop (diskuse | příspěvky)	(Fotografie interních komponent + klasického USB klíče # A male type-A USB connector. # An Ours Technology Inc. OTi-2168 USB 2.0 mass storage controller. This implements the USB 2.0 host controller, and provides a seamless linear interface to block-o)

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