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INDEX PRELIMINARY
MX8300
RAMBUS CLOCK GENERATOR
GENERAL DESCRIPTION
The product is a clock synthesizer chip for Rambus Channel. It uses advanced Phase lock loop technology to generate desired clock. The reference clock is supplied by external crystal. The FSO clock is 14 or 17 times of reference clock and its interface level is Rambus interface compatible. Beside FSO clock, crystal frequency divided by four clock output (FSC) is also provided for testing purpose. The FSC clock output is TTL compatible. The product is 3.3 V operation, and the package type is 8-pin SOP.
FEATURES
* Clock generator for RambusTM Channel * Provide frequency select pin * Provide a Rambus interface level output frequency which is 14 or 17 times of input frequency * Provide a TTL interface level output frequency which is input frequency divided by 4 * 3.3 V power supply * Package 8-pin SOP (150mil)
PIN CONFIGURATIONS
8-PIN SOP
N.C. GND FSO VDD
1
8
FSC FSEL OSCIN OSCOUT
2 3 4
MX8300
7 6 5
Rambus and
are trademarks of Rambus Inc.
P/N: PM0462
REV. 1.1, AUG 12, 1997
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INDEX
MX8300
PIN DESCRIPTION
SYMBOL N.C. GND FSO VDD OSCOUT OSCIN FSEL O I I O PIN TYPE O PIN NUMBER 1 2 3 4 5 6 7 DESCRIPTION No connection. Ground Rambus clock output. Rambus interface level. Power supply Crystal pin Crystal pin Frequency select pin(High:FSO=17*4*FSC,
Low:FSO=14*4*FSC). Toggling of FSEL will reset the counter in the FEEDBACK DIVIDER. FSC O 8 Clock output. Crystal frequency divided by 4.
BLOCK DIAGRAM
FSEL
FEEDBACK DIVIDER
OSCIN OSCOUT
OSC
PFC
CHARGE PUMP & LF
VCO
FSO
LOOP FILTER
/4
FSC
FUNCTIONAL DESCRIPTION
The Rambus clock generator is an integrated circuit of phase locked loop frequency synthesizer.It provides two clock output frequencies. The first output frequency (FSC) is the crystal frequency divided by 4 clock. The second output frequency (FSO) is 14 or 17 times of crystal frequency. The FSO output frequency can be selected by FSEL Pin. When FSEL pin is high, FSO is 17 times of crystal frequency. When FSEL is low, FSO is 14 times of crystal frequency. FSO is Rambus interface level output. As shown in the block diagram, a Phase locked loop consists of feedback divider, phase frequency comparator(PFC), Charge pump, voltage controlled osillator(VCO), and loop filter. All components for PLL are integrated inside the chip. Note:The counter in the FEEDBACK DIVIDER can be reset by toggling the FSEL after VDD exceed 3.0V. It takes 5ms for FSO to be stable after FSEL's toggling.
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INDEX
MX8300
ABSOLUTE MAXIMUM RATINGS
RATING Storage Temperature Applied Input Voltage Applied Output Voltage Supply Voltage Operating Temperature Power Dissipation VALUE -85oC to 150oC -0.5V to VDD + 0.5V -0.5V to VDD + 0.5V -0.5V to 5V 0 to 80oC 0.5Watts NOTICE: Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended period may affect reliability. NOTICE: Specifications contained within the following tables are subject to change.
DC CHARACTERISTICS TA = 0oC to 80oC, VDD = 3.15V to 3.6V
SYMBOL VIL VIH IIL IIH IVDD CI RL VLT IOH IOL Ro PARAMETER Input Low Voltage Input High Voltage Input Low Current Input High Current VDD Current Input Capacitance Line Impedence Line Termination Voltage Output High Current Output Low Current Output Resistance 20 2.2 -10 40 5.3 175 85 50 8 350 175 50 20 30 2.4 -5 5 40 10 75 2.7 10 75 10 525 260 MIN. TYP. MAX. 0.8 UNIT V V uA uA mA pF Ohm V uA mA Ohm Ohm Ohm Rambus Level, see note 1 Rambus Level, see note 1 FSO output VOL=0.4V, FSO output FSO output IOH=-600uA, FSC output IOL=600uA, FSC output CONDITIONS
Ro (PMOS) Output Resistance Ro (NMOS) Output Resistance
AC CHARACTERISTICS TA = 0oC to 80oC, VDD = 3.15V to 3.6V
SYMBOL Dt1 J Tr/Tf Tup PARAMETER Duty Cycle Jitter,short term Rise/Fall Time Power up Time 0.3 1 MIN. 45 TYP. MAX. 55 150 0.7 5 UNIT % ps ns ms Rambus level, FSO output 1. After power is stable 2. Frequency from 0 to 250MHz Note1: Defined by customer's system implementation CONDITIONS FSO, FSC
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INDEX
MX8300
ORDERING INFORMATION
PART NO.
MX8300MC
PACKAGE
8-PIN SOP
PACKAGE INFORMATION
8-PIN PLASTIC SOP (150 mil)
8
5
ITEM A B C D E F G H I J K L
MILLIMETER 4.90 .05 .60 .10 1.27 [TP] .41 .10 .13 .03 1.60 .13 1.45 .13 5.99 .3 3.91 .13 1.02 .13 .20 .60 .10
INCHES .193 .002 .024 .004 .050 [TP] .016 .004 .005 .001 .063 .005 .057 .005 .236 .012 .154 .005 .040 .005 .008 .024 .004
1
4
A H I J
NOTE:Each lead centerline is located within .25 mm[.01 inch] of its true position [TP] at maximum material condition.
G
F K
D
C
B
E
L
4
INDEX
MX8300
MACRONIX INTERNATIONAL CO., LTD.
HEADQUARTERS: No. 3, Creation Road III, Science-Based Industrial Park, Hsin Chu, Taiwan, R.O.C. TEL : +886-3-578-8888 FAX: +886-3-578-8887 TAIPEI OFFICE: 12F, No. 4, Min-Chuan E. Rd., Sec. 3, Taipei, Taiwan, R.O.C. TEL : +886-2-509-3300 FAX: +886-2-509-2200 EUROPE OFFICE: Grote Winkellaan 95, Bus 1 1853 Strombeek, Belgium TEL : +32-2-267-7050 FAX: +32-2-267-9700 SINGAPORE OFFICE: 5 Jalan Masjid Kembangan Court #01-12 Singapore 418924 TEL : +65-747-2309 FAX: +65-748-4090
MACRONIX AMERICA, INC.
1338 Ridder Park Drive, San Jose, CA95131 U.S.A. TEL : +1-408-453-8088 FAX: +1-408-453-8488 JAPAN OFFICE: NFK Kawasaki Building, 8F, 1-2 Higashida-cho, Kawasaki-ku Kawasaki-shi, Kawasaki-ken 210, Japan TEL : +81-44-246-9100 FAX: +81-44-246-9105
MACRONIX INTERNATIONAL CO., LTD. reserves the right to change product and specifications without notice.
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