CYI9530ZXCT

Clock Generators, PLLs, Frequency Synthesizers Overview

The CYI9530ZXCT is a PCIX I/O system clock generator manufactured by Silicon Laboratories. It provides dedicated clock buffer power pins to reduce noise, crosstalk, and jitter. The device accepts an input clock frequency between 25 MHz and 33.3 MHz and generates output frequencies of XINx1, XINx2, XINx3, and XINx4. Outputs are organized into two banks of five clocks each, plus one REF XIN clock output. The component features an SMBus interface for individual clock disabling, Spread Spectrum Clocking (SSCG) control, and back frequency selection. Output duty cycle is maintained at 50% (± 5%), with skew less than 250 ps within a bank and jitter under 250 psec.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates XINx1, XINx2, XINx3, and XINx4 outputs from a 25–33.3 MHz input
• SMBus interface for individual clock disabling and SSCG control
• Spread Spectrum feature reduces electromagnetic interference (EMI)
• Output jitter < 250 psec and skew < 250 ps within a bank

Clock Generators, PLLs, Frequency Synthesizers Applications

• PCIX I/O system clock generation
• Systems requiring EMI reduction via spread spectrum modulation
• Applications needing multiple synchronized clock outputs with independent enable control

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the manufacturer designation as Silicon Laboratories, consistent with the provided datasheet documentation. Confirm the package type is 48-pin TSSOP and that the suffix ZXCT indicates tape and reel packaging. Ensure compliance with commercial temperature range specifications of 0°C to 70°C during procurement validation.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a PCIX I/O system clock generator with integrated EMI control is required. The device supports hardware or SMBus-based frequency selection and output enabling. Verify that the application requires separate enable controls for Bank A and Bank B outputs and utilizes a 3.3V supply voltage compatible with the specified operating conditions.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The CYI9530ZXCT is part of the C9530 family of clock generators. It is the lead-free, tape-and-reel variant of the IMIC9530CTT. The 'Z' suffix denotes lead-free composition, while 'CT' specifies the 48-pin TSSOP package, and 'T' indicates tape and reel shipping configuration.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The IMIC9530CTT is a public confirmed substitute offering identical functionality in a 48-pin TSSOP package. Differences include tray versus tape-and-reel packaging and non-lead-free construction. Verify pinout compatibility and electrical specifications before substitution.