Renesas 6V49205BNLGI

Overview

The 6V49205BNLGI from Renesas Electronics is a system clock IC designed specifically for Freescale P10xx and P20xx processor-based platforms. It delivers 12 distinct clock outputs including Sys_CCB (66.66/80/83.33/100 MHz), DDRCLK (66.66 or 100 MHz), six LP-HCSL PCIe pairs (100 or 125 MHz), six 25 MHz LVCMOS clocks, two 2.048 MHz outputs, two USB clocks (12 or 24 MHz), and one 125 MHz LVCMOS output - all from a single 25 MHz crystal input.

For engineers reviewing the 6V49205BNLGI datasheet, 6V49205BNLGI pinout, 6V49205BNLGI application, or 6V49205BNLGI equivalent, this device supports PCIe Gen1–3 compliance, selectable spread spectrum on Sys_CCB/DDRCLK and PCIe outputs, integrated 33 Ω series terminations on LP-HCSL outputs, and industrial temperature operation (−40°C to +85°C) in a space-saving 7 × 7 mm VFQFPN package.

Technical Context

The 6V49205BNLGI integrates four independent PLLs: PLL1 (non-SS) for REF outputs, PLL2 (non-SS) for 125 MHz, PLL3 (SS-capable) for Sys_CCB and DDRCLK, and PLL4 (SS-capable) for PCIe outputs. It uses SMBus (I²C-compatible) for configuration of spread spectrum, slew rate, output enables, and frequency selection via latched control pins (FS0/FS1, SEL100#_66, SELPCIE125#_100).

Its architecture replaces 11 crystals, 2 oscillators, and 3 clock generators by consolidating timing resources with integrated terminations and programmable output characteristics. The device supports monotonic power supply ramping (≤4 ms), requires no external termination resistors for PCIe outputs, and maintains <3 ps RMS phase noise on REF outputs.

Key Specifications

Pinout & Package

6V49205BNLGI is housed in a 48-pin Very Thin Quad Flat No-Lead (VFQFPN) package with 7 mm × 7 mm body and 0.5 mm lead pitch. The package features an exposed thermal pad for enhanced heat dissipation (θJA = 32°C/W in still air) and is RoHS-compliant (Pb-free, "G" suffix).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar clock generator applications.

Compared with Si53320-A-GM and ICS843002AGI-01LFT, the 6V49205BNLGI uniquely integrates LP-HCSL terminations, PCIe Gen3-compliant jitter, dual DDRCLK selection, and telecom-grade 2.048 MHz outputs - making it the only drop-in solution for Freescale P10xx/P20xx reference designs requiring full feature parity.

Availability

6V49205BNLGI is available at Aetrix Electronics and suitable for communications infrastructure, industrial automation, automotive infotainment, and test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 6V49205BNLGI includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and communications markets.

The 6V49205BNLGI belongs to Renesas' high-integration clock generator family targeting Freescale QorIQ P-series SoC platforms, designed to consolidate timing resources, reduce board area, and simplify power sequencing in complex embedded systems.

FAQ

What is the primary function of the 6V49205BNLGI in Freescale P10xx/P20xx systems?

The 6V49205BNLGI serves as the main system clock generator for Freescale P10xx and P20xx processor-based designs. It synthesizes and distributes 12 distinct clock signals-including Sys_CCB, DDRCLK, six LP-HCSL PCIe reference clocks, six 25 MHz LVCMOS clocks, two 2.048 MHz outputs, two USB clocks, and one 125 MHz clock-from a single 25 MHz crystal input. This consolidation replaces multiple discrete timing components and simplifies board layout.

Does the 6V49205BNLGI support PCIe Gen3 timing compliance?

Yes, the 6V49205BNLGI meets PCIe Gen3 phase jitter requirements with 0.5–1.0 ps RMS jitter measured on its PCIe outputs at 100 MHz (spread off). This specification is validated per PCI-SIG methodology and applies to both 100 MHz and 125 MHz PCIe clock outputs, ensuring reliable high-speed serial link operation in demanding applications.

How does the 6V49205BNLGI handle DDR clock frequency selection?

DDR clock frequency selection on the 6V49205BNLGI is controlled by the latched input ^SEL100#_66 (Pin 44): logic 0 selects 100 MHz DDRCLK, and logic 1 selects 66.666 MHz DDRCLK. The device enforces strict power sequencing-processor core and I/O rails must be ramped with VDD3P3 or earlier-to prevent clock clamping and ensure correct output behavior during startup.

What package type is used for the 6V49205BNLGI, and what are its thermal advantages?

The 6V49205BNLGI uses a 48-pin VFQFPN package measuring 7 mm × 7 mm with 0.5 mm pitch and an exposed thermal pad. Its thermal resistance is θJA = 32°C/W in still air (with ePad soldered), significantly lower than the 62°C/W of the TSSOP variant. This enables higher power efficiency and improved reliability in thermally constrained industrial and automotive environments.

Can the 6V49205BNLGI's outputs be individually enabled or disabled?

Yes, the 6V49205BNLGI provides granular output control via SMBus registers. Byte 0–2 configure enable/disable states for REF5–REF0, USB_CLK1/2, CK2.048_0/1, DDRCLK, Sys_CCB, PCIe0–PCIe5, and 125M outputs. Each output can be independently powered down to reduce system power consumption without affecting other clock domains.