■ Up to 16 global clocks and 88 regional clocks optimally routed to meet the maximum performance of 800 MHz
■ Up to 112 and 132 periphery clocks in Stratix IV GX and Stratix IV E devices, respectively
■ Up to 66 (16 GCLK + 22 RCLK + 28 PCLK) clock networks per device quadrant in Stratix IV GX and Stratix IV GT devices
■ Up to 71 (16 GCLK + 22 RCLK + 33 PCLK) clock networks per device quadrant in Stratix IV E devices
■ Dedicated circuitry on the left and right sides of the device to support differential links at data rates from 150 Mbps to 1.6 Gbps
■ Up to 98 differential SERDES in Stratix IV GX devices, up to 132 differential SERDES in Stratix IV E devices, and up to 47 differential SERDES in Stratix IV GT devices
■ DPA circuitry at the receiver automatically compensates for channel-to-channel and channel-to-clock skew in source synchronous interfaces
■ Soft-CDR circuitry at the receiver allows implementation of asynchronous serial interfaces with embedded clocks at up to 1.6 Gbps data rate (SGMII and GbE)
■ Stratix IV E devices provide an excellent solution for applications that do not require high-speed CDR-based transceivers, but are logic, user I/O, or memory intensive.