The VSC056 is an I/O-intensive peripheral device that is intended to be part of a cost-effective Fibre Channel Arbitration Loop (FC-AL), Small Computer System Interface (SCSI), Serial Attached SCSI (SAS), or Serial ATA (SATA) enclosure management solution. The VSC056 contains an address-programmable I²C serial interface, a block of control and status registers, I/O port control logic, and a clock-generation block.
Along with an external crystal, the device can be configured to support up to 64 bits of general-purpose I/O or 16 bits of general-purpose I/O, 32 bits of port bypass control (16 pairs supporting 16 drives), eight fan-speed-monitoring inputs, and eight pulse-width-modulated general-purpose control outputs.
The VSC056 supports various combinations of individual port bypass circuit (PBC), clock recovery unit (CRU), and signal detect unit (SDU) functions, as well as integrated solutions. The controller register portion of the device allows the user to individually program each I/O pin as an input, an output, or an open-drain or open-source output.
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Key Features
Applications/Uses
Up to 64 Bits of 5V Tolerant, User-Definable, 12mA Bidirectional General-Purpose I/Os
Slave Mode I²C Serial Interface with Interrupt Output
Flexible FC-AL Port Bypass Control Logic for Up to 16 Drive Ports
Eight Optional Fan-Speed Monitor Inputs with Enhanced Input Filtering
Eight Optional Pulse-Width-Modulated Fan Control Outputs with Base Frequency Ranges from 200Hz to 100kHz
Pairing of General-Purpose I/O Pins for Direct Input/Output Signal Routing/Buffering
Seven Selectable Direct LED Drive Rates
10 Programmable LED Pulse Train Circuits
Support for Input Clocks Ranging from 8MHz to 12.5MHz and 32MHz to 75MHz
Up to 16 Subaddressed Master Mode I²C Serial Interface Ports for SFP/XFP Module or Peripheral Control
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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VSC056
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VSC056KM
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MQFP;100 pin;409.2 mm²
Outline Drawing: 21-7003 (PDF)
Land Pattern: 90-0166 (PDF)
Use pkgcode/variation: M100-1*
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