VSC056 Datasheet PDF - Maxim Integrated

GENERAL DESCRIPTION
   The VSC056 device is an I/O-intensive peripheral device that is intended to be part of a cost-effective Fibre Channel Arbitrated Loop (FC-AL), Small Computer System Interface (SCSI), Serial Attached SCSI (SAS), or Serial ATA (SATA) enclosure management solution. The device contains an address-programmable two-wire serial interface, a block of control and status registers, I/O port control logic, specialized port bypass control logic, and a clock-generation block.

FEATURES
• Up to 64 bits of user-definable, bidirectional
   general-purpose inputs and outputs
• Integrated port bypass, clock recovery and signal
   detect support for up to 16 drives
   • Eight programmable fan speed monitoring inputs
• Eight programmable pulse-width modulated fan
   control outputs
• Up to 32 programmable input-to-output bypass pairs
• Two clock input ranges: 8.0 MHz to 12.5 MHz
   (external crystal or external clock source) and
   32.0 MHz to 75.0 MHz (external clock source)
• Selectable direct LED drive flashing capability
• Pin-programmable addressing for up to 16 devices
   on a single serial bus
• 5-V tolerant high current I/O, Slave mode two-wire
   serial interface and interrupt output
• Ten programmable LED pulse train circuits
• One 24-bit general-purpose timer (supports a
   timeout greater than four seconds with a 12.5 MHz
   core clock)
• Up to 16 subaddressed Master mode two-wire serial
   interface ports
• External reset of the slave two-wire serial core
• Enhanced fan speed monitor input filters
• 20% of package pins are power and ground for
   excellent noise immunity and long-term reliability

APPLICATIONS
• Enterprise storage environments
• Storage Area Network (SAN) appliances
• Network Attached Storage (NAS) systems
• Fabric Attached Storage (FAS) systems
• Rack-mounted servers with RAID
• JBOD arrays
• Disk-based backup storage
• Near-line storage replacement systems
• Fixed-content storage systems