Datasheet > 6V49205B_17

6V49205B_17

更新时间： 2024-11-27 01:03:27

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
18页	558K
描述
Freescale P10XX and P20XX System Clock

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数据手册

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6V49205B_17 数据手册

Freescale P10XX and P20XX System Clock

with Selectable DDR Frequency

6V49205B

DATASHEET

Description

Typical Applications

System Clock for Freescale P10xx and P20xx-based designs

The 6V49205B is a main clock for Freescale P10xx and

P20xx-based systems. It has a selectable System CCB clock

and 2 DDRCLK speeds – 100M or 66.66M. The 6V49205B

also provides LP-HCSL PCIe outputs for low-power and

reduced board space.

Features

• Replaces 11 crystals, 2 oscillators and 3 clock generators;

lowers cost, power and area

• Integrated terminations on LP-HCSL PCIe outputs;

Output Features

• 1 – Sys_CCB 3.3V LVCMOS output at 100M/83.33M/

80M/66.66M

eliminate 24 resistors, saving 41mm of board area

• Industrial temperature range operation; supports

demanding environmental conditions

• 1 – DDRCLK 3.3V LVCMOS output at 100M or 66.66M

• 1 – 125M 3.3V LVCMOS output

• Advanced 3.3V CMOS process; high-performance,

low-power

• 6 – LP-HCSL PCIe pairs selectable at 100M or 125M

• 6 – 25MHz 3.3V LVCMOS outputs

• Supports independent spread spectrum on

Sys_CCB/DDRCLK and PCIe outputs

• 2 – 2.048M 3.3V LVCMOS outputs

• 2 – USB 3.3V LVCMOS outputs at 12M or 24M

• Available in space-saving 7 x 7 mm 48-VFQFPN with

0.5mm pad pitch; reduced board space without the need for

fine-pitch assembly techniques

Key Specifications

• PCIe Gen1-2-3 compliant

• < 3p rms phase noise on REF outputs

Block Diagram

Sys_CCB

PLL1

SCLK

(SS)

DDRCLK

SDATA

Control

Logic

^FS0

^FS1

^SEL100#_66

^SELPCIE125#_100

100MHz

PLL4

PCIe_L(5:0)

(SS)

PLL3

(non-

SS)

USB_CLK(2:1)

2.048M(1:0)

25MHz

Crystal

Oscillator

PLL2

(non-

SS)

125M

REF(5:0)

GND

Note 1: For DDR Clock: Processor core and I/O supply rails must be ramped with VDD3P3 or earlier. Clock signal will be

clamped LOW and output clock will be 100MHz if this is not followed (see diagram below).

VDD3P3

R40

10K

DDRCLK

R39

10K

6V49205B MAY 5, 2017

12 3 4 5 6 7...18

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