PLL202-16 PhaseLink (PLL), PLL202-16 Datasheet

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PLL202-16

Manufacturer Part Number
PLL202-16
Description
Ali, Via, Sis, Intel 440BX Chipset FTGS , Freq. Progr., Power Mgt, Wdt, Drive Ctrl, SST
Manufacturer
PhaseLink (PLL)
Datasheet
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991

 

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Clock frequency generator for VIA Pentium4
chipsets.
Provides 1 REF clock, 3 CPU (including one at
2.5V for the Chipset), 3 AGP, and 9 PCI clocks.
One 48MHz clock, one 24_48MHz clock.
Enhanced PCI Output Drive selectable by I2C.
Two 2.5V APIC and one 14.318MHz ref. Clocks.
Power management control for CPU and PCI.
Single byte micro-step linear Frequency
Programming via I2C with glitch free smooth
switching.
Built-in programmable watchdog timer up to 63
seconds with 1-second interval. It will generate a
low reset output when timer expired, with
programmable WD reset frequency.
Spread Spectrum 0.25% center, 0.5% center,
50% duty cycle with low jitter.
Available in 300 mil 48 pin SSOP.


0.75% center.









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Note: ^: Pull up –
3.3V: VDD and VDDCPU – for REF, XIN, XOUT,
PLL CORE, PCI, AGP, APIC, CPUT(0:1), and
CPUC(0:1)
2.5V: VDD_APIC and VDD_CPU_CS – for
CPUC_CS and CPUT_CS
CPU Cycle to Cycle jitter: 250ps.
PCI Cycle to Cycle jitter: 500ps.
PCI to PCI skew: 500ps.
CPU to CPU skew 175ps.
CPU to PCI skew (CPU lead): typical 2ns.
AGP to AGP skew: 250ps.




v
: Pull down – #: Active low – **: 2x drive strength

Rev 07/10/01 Page 1

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PLL202-16 Summary of contents

Page 1

Clock frequency generator for VIA Pentium4 chipsets. Provides 1 REF clock, 3 CPU (including one at 2.5V for the Chipset), 3 AGP, and 9 PCI clocks. One 48MHz clock, one 24_48MHz clock. Enhanced PCI Output Drive selectable by I2C. Two ...

Page 2

Name Number SEL24_48/REF 1 XIN 4 XOUT 5 FS3/48MHz 7 FS2/24_48MHz 8 FS0/PCI_F 10 FS1/PCI0 11 MULT_SEL1/PCI1 12 14,15,17, PCI(2:7) 18,19,21 PD# 22 AGP(0:2) 23,26,27 SCLK 28 SDATA 29 WDRESET# 30 PCI_STOP# 31 CPU_STOP# 32 Vtt_PWRG# 33 47745 Fremont Blvd., ...

Page 3

CPUT(0:1) 35,40 CPUC(0:1) 34,39 IREF 37 CPUT_CS 42 CPUC_CS 41 APIC(0:1) 45,46 VDD 2,6,16,24,38,48 VDD_CPU_CS 43 VDD_APIC 48 3,9,13,20, GND 25,36,44,47 MULT_SEL1 Board target trace ( 47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX ...

Page 4

FS4 FS3 FS2 FS1 FS0 ...

Page 5

When Power-Down (PD#) is sampled low by two consecutive rising edges of CPUC clock, then all clock outputs must be held low on their next high to low transition (except CPUT which must be driven high with a value ...

Page 6

Note: CPU_STOP# assertion will stop all CPU outputs.     Note: PCI_F left free-running after PCI_STOP# assertion. 47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991          Assertion CPU_Stop# Waveforms  Assertion ...

Page 7

A6 Address Assignment 1 Slave Provides both slave write and readback functionality Receiver/Transmitter Data Transfer Rate Standard mode at 100kbits/s The serial bits will be read or sent by the clock driver in the following order Byte 0 – Bits ...

Page 8

Bit 7 41,42 Bit 6 34,35 Bit 5 39,40 Bit 4 41,42 Bit 3 - Bit 2 - Bit 1 - Bit 0 - Bit 7 21 Bit 6 19 Bit 5 18 Bit 4 17 Bit 3 15 Bit ...

Page 9

Bit 7 7 Bit 6 8 Bit 5 - Bit 4 - Bit 3 1 Bit 2 - Bit 1 10 Bit 0 1 Bit 7 - Bit 6 - Bit 5 - Bit 4 46 Bit 3 45 Bit ...

Page 10

Bit 7 - Bit 6 - Bit 5 - Bit 4 - Bit 3 - Bit 2 - Bit 1 - Bit 0 - Note: *: Default value at power-up Bit 7 - Bit 6 - Bit 5 - Bit ...

Page 11

... To simplify traditional loop counter setting, the PLL202-16 device incorporates SMART-BYTE ™ technology with a single byte programming via I2C. Detail of PLL202-16's dual mode frequency programming method is described below: 1. ROM-table Frequency Programming: The pre-defined 32 frequencies found in Frequency table can be accessed through 3 external jumpers. ...

Page 12

... WDT will generate a 500ms low watchdog reset pulse to provoke a system reset. After system restarts, the PLL202-16 will start from predefined Fall-back Frequency (the value of I2C Byte6, bits(7:3)). If system for any reason fails again at Fall-back Frequency, the internal hardware will then generate a watchdog reset to restart the system from the value of external hardware jumper setting to ensure a safe recovery ...

Page 13

Disable WD- Enable Bit END !" F Setting !" Copy Fall-Back Frequency Setting to I2C Frequency Setting END !" Disable WD- Enable Bit !" F Frequency Setting 47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 ...

Page 14

PARAMETERS Supply Voltage Input Voltage, dc Output Voltage, dc Storage Temperature Ambient Operating Temperature Junction Temperature ESD Voltage Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods may cause permanent damage to the ...

Page 15

Unless otherwise stated, all power supplies = 3.3V 5%, and ambient temperature range T PARAMETERS SYMBOL Output Rise time T OR Output Fall time T OF Duty Cycle D T Clock Skew T SKEW Jitter(Cycle to Cycle) J cyc-cyc Frequency ...

Page 16

... President of PhaseLink Corporation. 47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991             47745 Fremont Blvd., Fremont, CA 94538, USA Tel: (510) 492-0990 Fax: (510) 492-0991 PART NUMBER PLL202-  TEMPERATURATURE C=COMMERCIAL M=MILITARY I=INDUSTRAL PACKAGE TYPE X=SSOP Rev 07/10/01 Page 16 ...

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