Description
The 5P49V5901 is a programmable clock generator intended for high performance consumer, networking, industrial, computing, and data-communications applications. Configurations may be stored in on-chip One-Time Programmable (OTP) memory or changed using I2C interface. This is IDTs fifth generation of programmable clock technology (VersaClock® 5).
The frequencies are generated from a single reference clock. The reference clock can come from one of the two redundant clock inputs. A glitchless manual switchover function allows one of the redundant clocks to be selected during normal operation.
Two select pins allow up to 4 different configurations to be programmed and accessible using processor GPIOs or bootstrapping. The different selections may be used for different operating modes (full function, partial function, partial power-down), regional standards (US, Japan, Europe) or system production margin testing.
The device may be configured to use one of two I2C addresses to allow multiple devices to be used in a system.

Features
• Generates up to four independent output frequencies
• High performance, low phase noise PLL, <0.7 ps RMS
   typical phase jitter on outputs:
   – PCIe Gen1, 2, 3 compliant clock capability
   – USB 3.0 compliant clock capability
   – 1 GbE and 10 GbE
• Four fractional output dividers (FODs)
• Independent Spread Spectrum capability on each output
   pair
• Four banks of internal non-volatile in-system
   programmable or factory programmable OTP memory
• I2C serial programming interface
• One reference LVCMOS output clock
• Four universal output pairs:
   – Each configurable as one differential output pair or two
      LVCMOS outputs
• I/O Standards:
   – Single-ended I/Os: 1.8V to 3.3V LVCMOS
   – Differential I/Os - LVPECL, LVDS and HCSL
• Input frequency ranges:
   – LVCMOS Reference Clock Input (XIN/REF) – 1MHz to
      200MHz
   – LVDS, LVPECL, HCSL Differential Clock Input (CLKIN,
      CLKINB) – 1MHz to 350MHz
   – Crystal frequency range: 8MHz to 40MHz
• Output frequency ranges:
   – LVCMOS Clock Outputs – 1MHz to 200MHz
   – LVDS, LVPECL, HCSL Differential Clock Outputs –
      1MHz to 350MHz
• Individually selectable output voltage (1.8V, 2.5V, 3.3V) for
   each output pair
• Redundant clock inputs with manual switchover
• Programmable loop bandwidth
• Programmable output to output skew
• Programmable slew rate control
• Programmable crystal load capacitance
• Individual output enable/disable
• Power-down mode
• 1.8V, 2.5V or 3.3V core VDDD, VDDA
• Available in 24-pin VFQFPN 4mm x 4mm package
• -40° to +85°C industrial temperature operation

Applications
• Ethernet switch/router
• PCI Express 1.0/2.0/3.0
• Broadcast video/audio timing
• Multi-function printer
• Processor and FPGA clocking
• Any-frequency clock conversion
• MSAN/DSLAM/PON
• Fiber Channel, SAN
• Telecom line cards
• 1 GbE and 10 GbE