PLL202-13 PhaseLink (PLL), PLL202-13 Datasheet

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PLL202-13

Manufacturer Part Number
PLL202-13
Description
Ali, Via, Sis, Intel 440BX Chipset FTGS , Freq. Progr., SST
Manufacturer
PhaseLink (PLL)
Datasheet
FEATURES
BLOCK DIAGRAM
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991
SDATA
FS (0:3)*
SCLK
Generates all clock frequencies for SIS540,
SIS630 Pentium
multiple CPU clocks and high speed SDRAM
buffers.
Support 3 CPU clocks, 7PCI and 14 high-speed
SDRAM buffers for 3-DIMM applications.
One I2C selectable 24 or 48MHz clock output
(default 24 MHz).
One 48 MHz USB clock output.
Two14.318MHz reference clocks.
Support 2-wire I2C serial bus interface with built-
in Vendor ID, Device ID and Revision ID.
Single byte micro-step linear Frequency Progra-
mming via I2C with Glitch free smooth switching.
Built-in programmable watch dog timer up to 63
seconds with 1-second interval. It will generate a
LOW reset output when timer expired.
Spread Spectrum 0.25% center or -0.5% down.
50% duty cycle with low jitter.
Available in 300 mil 48 pin SSOP.
XOUT
XIN
Motherboard Clock Generator for SIS540/630 with 133MHz FSB
Logic
I2C
PLL2
XTAL
PLL1
OSC
SST
and K6 chip sets, requiring
Watch
Control
Dog
Logic
REF(0:1)
CPU(0:2)
PCI(0:6)
VDD1
VDDL2
VDD3
SDRAM(0:13)
VDD2
VDD4
48Mhz
24_48Mhz
WDRESET
PIN CONFIGURATION
Note:
POWER GROUP
KEY SPECIFICATIONS
REF0/FS3*
PCI0/FS1*
PCI1/FS2*
VDD0: PLL CORE
VDD1: REF0, XIN, XOUT
VDD2: PCI(0:6)
VDD3: SDRAM(0:13)
VDD4: 48MHz, 24_48MHz
VDDL1: CPU(0:2)
CPU Cycle to Cycle jitter: 250ps.
PCI to PCI output skew: 500ps.
CPU to SDRAM output skew: 500ps.
CPU to CPU output skew: 250ps.
SDRAM to SDRAM output skew: 250ps.
CPU to PCI skew (CPU leads): 1 ~ 4 ns.
GNDREF
SDRAM3
SDRAM0
SDRAM2
SDRAM1
v
SDATA
: Pull down, #: Active low
XOUT
VDD1
VDD2
VDD3
SCLK
VDD0
PCI2
GND
PCI3
PCI4
PCI5
PCI6
GND
GND
XIN
v
v
v
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
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13
14
14
15
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16
16
17
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18
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20
21
21
22
22
23
23
24
24
48
48
47
47
46
46
45
45
44
44
43
43
42
42
41
41
40
40
39
39
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38
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37
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35
34
34
33
33
32
32
31
31
30
30
29
29
28
28
27
27
26
26
25
25
*
: Bi-directional latched at power-up
PLL202-13
WDRESET#
CPU0
CPU1
GND
CPU2
VDD3
SDRAM13
SDRAM12
GND
SDRAM11
SDRAM10
VDD3
SDRAM9
SDRAM8
GND
SDRAM7
SDRAM6
VDD3
SDRAM5
SDRAM4
VDD4
48MHz/FS0*
24_48MHz/CPU2.5_3.3*
VDDL1
Rev 02/15/00 Page 1
v
v

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PLL202-13 Summary of contents

Page 1

... CPU Cycle to Cycle jitter: 250ps. PCI(0:6) PCI to PCI output skew: 500ps. VDD4 CPU to SDRAM output skew: 500ps. 48Mhz CPU to CPU output skew: 250ps. 24_48Mhz SDRAM to SDRAM output skew: 250ps. WDRESET CPU to PCI skew (CPU leads ns. PLL202-13 WDRESET VDDL1 ...

Page 2

... CPU2.5_3.3 input will program internal CPU skew circuits based on CPU voltage. If high, it selects 2.5V. If Low, it selects 3.3V (default). This pin is an open drain output. It will be Low at watchdog timer O expiration. O Buffered reference clock after input data latched during power-up. PLL202-13 Description Rev 02/15/00 Page 2 ...

Page 3

... PLL202-13 Spread PCI Spectrum Modulation 33 -0.5% 33 -0.5% 37.6 0.25% 33 -0.5% 33.4 0.25% 33 -0.5% 37.6 0.25% 33 -0.5% 33.4 0.25% 32 -0.5% 28.3 0.25% 31.6 0.25% 31.6 0.25% 37.3 0.25% 27.6 0.25% 32 -0.5% 33.4 0.25% 33.4 0.25% 32.3 0.25% 33.4 0.25% 37.5 ...

Page 4

... PLL202-13 Spread SDRAM PCI Spectrum Modulation 66.8 33.4 0.25% 95.0 31.6 0.25% 96.2 32 -0.5% 97.0 32 -0.5% 97.0 32.3 0.25% 100.0 33 -0.5% 100.2 33.4 0.25% 112.0 37.3 0.25% 120.0 30.0 0.25% 133.3 33 -0.5% 133.6 33.4 0.25% 138.0 34.5 0.25% 140.0 35.0 0.25% 145.0 36.2 0.25% 147 ...

Page 5

... FS2 ( see Frequency selection Table ) 1 FS1 ( see Frequency selection Table ) 0 FS0 ( see Frequency selection Table ) 0 Frequency selection control bit 1=Via I2C, 0=Via External jumper 0 FS3 ( see Frequency selection Table ) 1 0=Normal 1=Spread Spectrum enable 0 0=Normal 1=Tristate Mode for all outputs PLL202- R Rev 02/15/00 Page 5 ...

Page 6

... Inverted power up latched CPU2.5_3.3 value (Read-back only) 1 PCI6 ( Active/Inactive ) 1 PCI5 ( Active/Inactive ) 1 PCI4 ( Active/Inactive ) 1 PCI3 ( Active/Inactive ) 1 PCI2 ( Active/Inactive ) 1 PCI1 ( Active/Inactive ) 1 PCI0 ( Active/Inactive ) Default Description 1 SDRAM7 ( Active/Inactive ) 1 SDRAM6 ( Active/Inactive ) 1 SDRAM5 ( Active/Inactive ) 1 SDRAM4 ( Active/Inactive ) 1 SDRAM3 ( Active/Inactive ) 1 SDRAM2 ( Active/Inactive ) 1 SDRAM1 ( Active/Inactive ) 1 SDRAM0 ( Active/Inactive ) PLL202-13 Rev 02/15/00 Page 6 ...

Page 7

... WDT Fall-back Frequency selection for FS3 0 WDT Fall-back Frequency selection for FS2 0 WDT Fall-back Frequency selection for FS1 0 WDT Fall-back Frequency selection for FS0 0 Vendor ID Bit 2* 1 Vendor ID Bit 1* 1 Vendor ID Bit 0* PLL202-13 Revision ID Bit 3* Revision ID Bit 2* Revision ID Bit 1* Revision ID Bit 0* Vendor ID Bit 3* Rev 02/15/00 Page 7 ...

Page 8

... Watchdog Time Interval Bit 4 0 Watchdog Time Interval Bit 3 1 Watchdog Time Interval Bit 2 1 Watchdog Time Interval Bit 1 1 Watchdog Time Interval Bit 0 (LSB) PLL202-13 Description Description Device ID Bit 5* Device ID Bit 4* Device ID Bit 3* Device ID Bit 2* Device ID Bit 1* Device ID Bit 0* Rev 02/15/00 Page 8 ...

Page 9

... Motherboard Clock Generator for SIS540/630 with 133MHz FSB PROGRAMMING OF CPU FREQUENCY To simplify traditional loop counter setting, the PLL202-13 device incorporates SMART-BYTE ™ technology with a single byte programming via I2C to better optimize clock jitter and spread spectrum performance. Detail of PLL202-13's dual mode frequency programming method is described below: 1 ...

Page 10

... I2C.Byte8.Bit(5:0). Once Enabled, WDT has to be disabled within a period that is shorter than the programmed watchdog interval; otherwise WDT will generate a 500ms low watchdog reset pulse to provoke a system reset. After system restarts, the PLL202-13 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 11

... Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 I2C Register Loading: WD-TIMER, WD-ENABLE I2C Register Loading: SUCCESS = Target CPU SUCCESS = Fall-Back CPU System Restart @ PLL202-13 START Fall-Back, M, FSEL Wait For System Response FAIL - After specified WD-Timer Expired System Restart @ ...

Page 12

... All Inputs except XIN V IH All inputs except XIN Logic inputs with internal pull-down I IL2 resistors R 2,7,8,25, 3. Logic Inputs IN C XIN & XOUT pins INX PLL202-13 MIN. MAX 0 0 0 -65 ...

Page 13

... L SDRAM CPU to CPU SDRAM to SDRAM PCI to PCI Measured @ 1.5V, equal loads CPU to SDRAM SDRAM to SDRAM CPU to PCI CPU V =3.3V(2.5V REF0, PCI, 48Mhz, 24_48Mhz V =3. SDRAM REF1 PLL202- MIN. TYP. MAX =2. Rev 02/15/00 Page 13 UNITS ...

Page 14

... PCI(0: 1.5V REF0 OL REF1 24_48MHz Measured @ 1.25V CPU PCI Measured @ 1.5V REF,48MHz,24MHz Measured @ 1.25V CPU PCI Measured @ 1.5V REF,48MHz,24MHz Measured @ 1.25V CPU Measured @ 1.5V SDRAM Measured @ 1.5V PCI PLL202- MIN. TYP. MAX 105 80 110 155 55 75 105 105 ...

Page 15

... MIN (0.20 - 0.41) 48PIN SSOP 47745 Fremont Blvd., Fremont, CA 94538, USA Tel: (510) 492-0990 Fax: (510) 492-0991 PART NUMBER PLL202- PLL202-13 0.025 0.835 0.088 - 0.096 (2.250 - 2.450) 0.097 - 0.104 (2.467 - 2.642) TEMPERATURATURE C=COMMERCIAL M=MILITARY I=INDUSTRAL PACKAGE TYPE ...

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