W83195BR-25 200MHZ 3-DIMM CLOCK FOR SOLANO CHIPSET 1.0 GENERAL DESCRIPTION The W83195BR-25 is a Clock Synthesizer for Intel 815 Solano chipset. W83195BR-25 provides all clocks required for high-speed RISC or CISC microprocessor and also provides 64 different frequencies of CPU, SDRAM, PCI, 3V66, IOAPIC clocks frequency setting. All clocks are externally selectable with smooth transitions. The W83195BR-25 provides I2C serial bus interface to program the registers to enable or disable each clock outputs and provides 0.25% and 0.5% center type spread spectrum to reduce EMI. The W83195BR-25 provides stepless frequency programming by controlling the VCO freq. and the clock output divisor ratio. Also skew of CPU,SDRAM and 3V66 clock outputs are programmable. A watch dog timer is quipped and when time out, the RESET# pin will output 4ms pulse signal. The W83195BR-25 accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply. High drive PCI and SDRAM CLOCK outputs typically provide greater than 1 V /ns slew rate into 30 pF loads. CPU CLOCK outputs typically provide better than 1 V /ns slew rate into 20 pF loads as maintaining 50± 5% duty cycle. The fixed frequency outputs as REF, 24MHz, and 48 MHz provide better than 0.5V /ns slew rate. 2.0 PRODUCT FEATURES • • • • • • • 2 CPU clocks (2.5V) 3 3V-66 clocks (3.3V) 12 SDRAM clocks for 3 DIMMs(3.3V) 8 PCI synchronous clocks. Optional single or mixed supply: (VDDR = VDDP=VDDS = VDD48 = VDD3 = 3.3V, VDDA=VDDC=2.5V) Skew form CPU to PCI clock -1 to 4 ns, center 2.6 ns Smooth frequency switch with selections from 66.8 to 200MHz 2 2 I C 2-Wire serial interface and I C read back 0.25% center and 0.5% center type spread spectrum Programmable registers to enable/stop each output and select modes (mode as Tri-state or Normal ) 48 MHz for USB 24 MHz for super I/O • Packaged in 56-pin SSOP • • • • • -1- Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY 3.0 PIN CONFIGURATION VDDR Xin Xout VSS VSS 3V66-0 3V66-1 3V66-2 VDD3 VDDP PCICLK0/ FS0& PCICLK1/ *FS1 PCICLK2/SEL24_48* VSS PCICLK3^/Mode1* PCICLK4^ PCICLK5^ VDDP PCICLK6^ PCICLK7 VSS PD#/RESET$ *SDCLK *SDATA VDDS SDRAM 11 SDRAM 10 VSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 23 24 25 26 27 28 REF0/ FS4&^ VddA IOAPIC VDDC CPUCLK0 CPUCLK1 VSS VSS SDRAM 0 SDRAM 1 SDRAM 2 VDDS SDRAM 3 SDRAM 4 SDRAM 5 VSS SDRAM 6 SDRAM 7 SDRAM_F VDDS VSS 24_48MHz/ FS2& 48MHz/ *FS3 ^ VDD48 VDDS SDRAM 8 SDRAM 9 VSS Note: * Internal pull-up &: Internal pull-down ^ 1.5~2 strength $: Open drain 4.0 PIN DESCRIPTION IN - Input OUT - Output I/O - Bi-directional Pin -2- Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY # - Active Low * - Internal 250kΩ pull-up 4.1 Crystal I/O Xin SYMBOL PIN 2 I/O IN Xout 3 OUT FUNCTION Crystal input with internal loading capacitors(36pF) and feedback resistors. Crystal output at 14.318MHz nominally with internal loading capacitors(36pF). 4.2 CPU, SDRAM, PCI, IOAPIC Clock Outputs SYMBOL CPUCLK [0:1] PIN 52,51 I/O OUT PD#/RESET$ 22 IN IOAPIC 54 OUT OUT PCICLK0/ FS0& 38, 48,47,46, 44,43,42,40, 39,31, 30,27, 26 11 PCICLK1/ *FS1 12 I/O PCICLK2/ *SEL24_48 13 I/O PCICLK3/ Mode1* 15 I/O 16,17,19,20 6,7,8 OUT OUT SDRAM_F, SDRAM[0:11] PCICLK [ 4:7 ] 3V66 [0:2] I/O -3- FUNCTION Low skew (< 250ps) clock outputs for host frequencies such as CPU and Chipset. Mode1*=1, Power Down mode when driven low. Mode1*=0, RESET# open drain (4ms low active pulse when Watch Dog time out) Clock outputs synchronous with PCI clock and powered by VddA. SDRAM clock outputs. 3.3V 33MHz PCI clock during normal operation. Latched input for FS0 at initial power up for H/W selecting the output frequency of CPU, SDRAM and PCI clocks(Default=0). Low skew (< 250ps) PCI clock outputs. Latched input for FS1 at initial power up for H/W selecting the output frequency of CPU, SDRAM and PCI clocks(Default=1). Low skew (< 250ps) PCI clock outputs. Latched input for SEL24_48 at initial power up for the output frequency of 24MHz(HIGH) and 48MHz(LOW) clocks. Low skew (< 250ps) PCI clock outputs. Latched input for Mode* pin at initial power up for the output PD# /RESET# output selection. Low skew (< 250ps) PCI clock outputs. 3.3V output clocks for the chipset. Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY 4.3 I2C Control Interface SYMBOL PIN I/O FUNCTION 2 *SDATA 24 I/O Serial data of I C 2-wire control interface with internal pull-up resistor. *SDCLK 23 IN Serial clock of I2C 2-wire control interface with internal pull-up resistor. 4.4 Fixed Frequency Outputs SYMBOL REF0 / FS4& PIN I/O 56 I/O FUNCTION 14.318MHz reference clock. This REF output is the stronger buffer for ISA bus loads. Latched input for FS4 at initial power up for H/W selecting the output frequency of CPU, SDRAM and PCI clocks (Default=0). 24_48MHz/FS2& 35 I/O 24MHz or 48MHz output clock. Default is 24MHz. Latched input for FS2 at initial power up for H/W selecting the output frequency of CPU, SDRAM and PCI clocks(Default=0). 48MHz/ FS3* 34 I/O 48MHz / Latched input for FS3 at initial power up for H/W selecting the output frequency of CPU, SDRAM and PCI clocks (Default=1). 4.5 Power Pins SYMBOL VddC,VddA PIN 53,55 FUNCTION Power supply for CPU & IOAPIC, 2.5V or 3.3V. Vdd48 33 Power supply for 48MHz output,3.3V. Vdd3 9 Power supply for 3V_66 output, 3.3V. VddP 10,18 VddR 1 VddS 45,37,32,25 Vss Power supply for PCICLK, 3.3V. Power supply for REF0, 3.3V. Power supply for SDRAM_F,SDRAM[0:11], nominal 3.3V. 4,5,14,21,28,29,36, Circuit Ground. 41, 49.50 -4- Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY 5.0 Frequency Selection BY hardware FS4 FS3 FS2 FS1 FS0 CPU(MHz) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 55.00 60.00 66.80 68.33 70.00 72.00 75.00 77.00 83.30 90.00 100.30 103.00 112.50 115.00 120.00 125.00 128.00 130.00 133.70 137.00 140.00 145.00 150.00 153.33 125.00 130.00 133.70 137.00 140.00 145.00 150.00 153.33 SDRAM(MHz) 3V66(MHz) 82.50 90.00 100.20 102.50 105.00 108.00 112.50 115.50 83.30 90.00 100.30 103.00 112.50 115.00 120.00 125.00 128.00 130.00 133.70 137.00 140.00 145.00 150.00 153.33 93.75 97.50 100.28 102.75 105.00 108.75 112.50 115.00 -5- 55.00 60.00 66.80 68.33 70.00 72.00 75.00 77.00 55.53 60.00 66.87 68.67 75.00 76.67 80.00 83.33 64.00 65.00 66.85 68.50 70.00 72.50 75.00 76.67 62.50 65.00 66.85 68.50 70.00 72.50 75.00 76.67 PCI(MHz) IOAPIC (MHz) 27.50 30.00 33.40 34.17 35.00 36.00 37.50 38.50 27.77 30.00 33.43 34.33 37.50 38.33 40.00 41.67 32.00 32.50 33.43 34.25 35.00 36.25 37.50 38.33 31.25 32.50 33.43 34.25 35.00 36.25 37.50 38.33 13.75 15.00 16.70 17.08 17.50 18.00 18.75 19.25 13.88 15.00 16.72 17.17 18.75 19.17 20.00 20.83 16.00 16.25 16.71 17.13 17.50 18.13 18.75 19.17 15.63 16.25 16.71 17.13 17.50 18.13 18.75 19.17 Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY 6. SERIAL CONTROL REGISTERS The Pin column lists the affected pin number and the @PowerUp column gives the state at true power up. Registers are set to the values shown only on true power up. "Command Code" byte and "Byte Count" byte must be sent following the acknowledge of the Address Byte. Although the data (bits) in these two bytes are considered "don't care", they must be sent and will be acknowledge. After that, the below described sequence (Register 0, Register 1, Register 2, ....) will be valid and acknowledged. Frequency Table Setting by I2C (SEL5 ~ SEL0) SSEL5 SSEL4 SSEL3 SSEL2 SSEL1 SSEL0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 CPU (MHz) 55.00 60.00 66.80 68.33 70.00 72.00 75.00 77.00 83.30 90.00 100.30 103.00 112.50 115.00 120.00 125.00 128.00 130.00 133.70 137.00 140.00 145.00 150.00 153.33 125.00 130.00 133.70 137.00 140.00 145.00 -6- SDRAM (MHz) 82.50 90.00 100.20 102.50 105.00 108.00 112.50 115.50 83.30 90.00 100.30 103.00 112.50 115.00 120.00 125.00 128.00 130.00 133.70 137.00 140.00 145.00 150.00 153.33 93.75 97.50 100.28 102.75 105.00 108.75 3V66 (MHz) 55.00 60.00 66.80 68.33 70.00 72.00 75.00 77.00 55.53 60.00 66.87 68.67 75.00 76.67 80.00 83.33 64.00 65.00 66.85 68.50 70.00 72.50 75.00 76.67 62.50 65.00 66.85 68.50 70.00 72.50 PCI(MHz) 27.50 30.00 33.40 34.17 35.00 36.00 37.50 38.50 27.77 30.00 33.43 34.33 37.50 38.33 40.00 41.67 32.00 32.50 33.43 34.25 35.00 36.25 37.50 38.33 31.25 32.50 33.43 34.25 35.00 36.25 IOAPIC (MHz) 13.75 15.00 16.70 17.08 17.50 18.00 18.75 19.25 13.88 15.00 16.72 17.17 18.75 19.17 20.00 20.83 16.00 16.25 16.71 17.13 17.50 18.13 18.75 19.17 15.63 16.25 16.71 17.13 17.50 18.13 Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY 0 0 1 1 1 1 1 1 1 1 0 1 150.00 153.33 SSEL5 SSEL4 SSEL3 SSEL2 SSEL1 SSEL0 CPU (MHz) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 66.8 135.00 142.00 143.00 144.00 146.00 147.00 148.00 100.20 156.00 158.00 160.00 135.00 139.00 141.00 142.00 143.00 144.00 146.00 147.00 148.00 149.00 153.00 157.00 159.00 162.00 164.00 170.00 175.00 180.00 190.00 200.40 -7- 112.50 115.00 SDRAM (MHz) 75.00 76.67 3V66 (MHz) 37.50 38.33 PCI(MHz) 18.75 19.17 IOAPIC (MHz) 133.00 135.00 142.00 143.00 144.00 146.00 147.00 148.00 133.00 156.00 158.00 160.00 101.25 104.25 105.75 106.50 107.25 108.00 109.50 110.25 111.00 111.75 114.75 117.75 119.25 121.50 123.00 127.50 116.67 120.00 190.00 133.60 66.80 67.50 71.00 71.50 72.00 73.00 73.50 74.00 66.80 78.00 79.00 80.00 67.50 69.50 70.50 71.00 71.50 72.00 73.00 73.50 74.00 74.50 76.50 78.50 79.50 81.00 82.00 85.00 58.30 60.00 63.33 66.80 33.40 33.75 35.50 35.75 36.00 36.50 36.75 37.00 33.40 39.00 39.50 40.00 33.75 34.75 35.25 35.50 35.75 36.00 36.50 36.75 37.00 37.25 38.25 39.25 39.75 40.50 41.00 42.50 29.15 30.00 31.67 33.40 16.70 16.88 17.75 17.88 18.00 18.25 18.38 18.50 16.70 19.50 19.75 20.00 16.88 17.38 17.63 17.75 17.88 18.00 18.25 18.38 18.50 18.63 19.13 19.63 19.88 20.25 20.50 21.25 14.58 15.00 15.83 16.70 Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY 6.1 Register 0: CPU Frequency Select Register Bit 7 6 5 4 3 @PowerUp 0 0 0 0 0 Pin - 2 1 0 0 0 0 - Description SSEL3 (Frequency table selection by software via I2C ) SSEL2 ( Frequency table selection by software via I2C) SSEL1 ( Frequency table selection by software via I2C) SSEL0 ( Frequency table selection by software via I2C) 0 = Selection by hardware 1 = Selection by software I2C - Bit (2, 7:4) SSEL4 (Frequency table selection by software via I2C ) SSEL5 (Frequency table selection by software via I2C ) 0 = Running 1 = Tristate all outputs 6.2 Register 1 : CPU Clock Register (1 = Active, 0 = Inactive) Bit @PowerUp Pin escription 7 X - FS0# 6 X - FS1# 5 X - FS2# 4 X - FS3# 3 X - FS4# 2 0 - 1 0 - 0 1 - 1 = ±0.25% Center type Spread Spectrum Modulation 0 = ±0.5% Center type Spread Spectrum Modulation 0 = Normal 1 = Spread Spectrum enabled 1 = Center type Spread Spectrum Modulation 0 = Down type Spread Spectrum Modulation 6.3 Register 2: SDRAM Clock Register (1 = Active, 0 = Inactive) Bit 7 6 5 4 3 2 1 0 @PowerUp 1 1 1 1 1 1 1 1 Pin 39 40 42 43 44 46 47 48 Description SDRAM7 (Active / Inactive) SDRAM6 (Active / Inactive) SDRAM5 (Active / Inactive) SDRAM4 (Active / Inactive) SDRAM3 (Active / Inactive) SDRAM2 (Active / Inactive) SDRAM1 (Active / Inactive) SDRAM0 (Active / Inactive) -8- Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY 6.4 Register 3: PCI Clock Register (1 = Active, 0 = Inactive) Bit @PowerUp Pin Description 7 1 20 PCICLK7 (Active / Inactive) 6 1 19 PCICLK6 (Active / Inactive) 5 1 17 PCICLK5 (Active / Inactive) 4 1 16 PCICLK4 (Active / Inactive) 3 1 15 PCICLK3 (Active / Inactive) 2 1 13 PCICLK2 (Active / Inactive) 1 1 12 PCICLK1 (Active / Inactive) 0 1 11 PCICLK0 (Active / Inactive) 6.5 Register 4: Additional Register (1 = Active, 0 = Inactive) Bit @PowerUp Pin 7 1 8 3V66_2(Active / Inactive) 6 1 7 3V66_1(Active / Inactive) 5 1 6 3V66_0(Active / Inactive) 4 1 26 SDRAM11 (Active / Inactive) 3 1 27 SDRAM10 (Active / Inactive) 2 1 30 SDRAM9 (Active / Inactive) 1 1 31 SDRAM8(Active / Inactive) 0 1 38 SDRAM_F (Active / Inactive) Description 6.6 Register 5: SDRAM Clock Register (1 = Active, 0 = Inactive) Bit 7 6 5 4 3 2 1 0 @PowerUp 1 0 0 1 0 0 1 1 Pin 51 52 Description CSkew2 (CPU to SDRAM skew program bit) CSkew1 (CPU to SDRAM skew program bit) CSkew0 (CPU to SDRAM skew program bit) CASkew2 (CPU to 3V66 skew program bit) CASkew1 (CPU to 3V66 skew program bit) CASkew0 (CPU to 3V66 skew program bit) CPUCLK1(Active / Inactive) CPUCLK0(Active / Inactive) -9- Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY 6.7 Register 6~10: Step-less M/N mode control Register 6.12 Register 11: Winbond Chip ID Register (Read Only) Bit 7 6 5 4 3 2 1 0 @PowerUp 0 1 0 1 0 0 0 0 Pin - Description Winbond Chip ID Winbond Chip ID Winbond Chip ID Winbond Chip ID Winbond Chip ID Winbond Chip ID Winbond Chip ID Winbond Chip ID 6.14 Register 12: Winbond Chip ID Register (Read Only) Bit @PowerUp Pin Description 7 0 - Winbond Chip ID 6 0 - Winbond Chip ID 5 0 - Winbond Chip ID 4 1 - Winbond Chip ID 3 0 - Winbond Version ID 2 0 - Winbond Version ID 1 1 - Winbond Version ID 0 0 - Winbond Version ID Register10 Bit3-6 Ratio Bit6 Bit 5 Bit 4 Bit 3 DS3 DS2 DS1 DS0 CPU SDRAM 3V66 0 0 0 0 4 4 6 0 0 0 1 3 3 6 0 0 1 0 2 3 6 - 10 - Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY 0 0 1 1 2 2 6 0 1 0 0 6 4 6 0 1 0 1 3 4 6 0 1 1 0 6 3 6 0 1 1 1 4 3 6 1 0 x x 2 2 4 1 1 x x 2 4 6 7.0 SPECIFICATIONS 7.1 Absolute Maximum Ratings Stresses greater than those listed in this table may cause permanent damage to the device. Precautions should be taken to avoid application of any voltage higher than the maximum rated voltages to this circuit. Maximum conditions for extended periods may affect reliability. Unused inputs must always be tied to an appropriate logic voltage level (Ground or Vdd). Symbol Parameter Rating Vdd , VIN Voltage on any pin with respect to GND - 0.5 V to + 7.0 V TSTG Storage Temperature - 65°C to + 150°C TB Ambient Temperature - 55°C to + 125°C TA Operating Temperature 0°C to + 70°C 7.2 Electronical Characteristics---Input/Output Vddq1=Vddq2 = Vddq3 = Vddq4 =3.3V, VddL1 =VddL2= 2.5V , TA = 0°C to +70°C Parameter Symbol Min Typ - 11 - Max Units Test Conditions Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY Input Low Voltage VIL Vss-0.3 0.8 Vdc Input High Voltage VIH 2.0 Vdd+0.3 Vdc Input Low Current IIL -5 µA No pull-up resistors Input Low Current IIL -200 µA Pull-up resistros Input High Current IIH CIN COUT CINX -5 Input Capacitance 5 µA pF pF pF MA Operating Supply Current Idd3 5 6 45 100 Power Down Supply Current Idd2 600 µA Settling Time Ts 3 mS 10 10 nS nS Delay 27 tPZH,tPZH tPLZ,tPZH 1 1 Logic inputs Output capacitance Xin and Xout CPU = 66.6 MHz PCI = 33.3 Mhz with load From first crossing to 1% target freq. Output enable delay Output enable delay 7.3 Electronical Characteristics of CPU Clock Vdd=2.5V +/- 5%; CL=10-20pF Min 13.5 13.5 V IOH=-1mA Output High Voltage VOH 2.0 Output Low Current IOL 27 30 MA Output High Current IOH -27 -27 MA Pull-Up Current Min IOH(min) -27 Pull-Up Current Max IOH(max) Rise/Fall Time Min Between 0.4 V and 2.0 V Rise/Fall Time Max Between 0.4 V and 2.0 V Duty Cycle Skew Jitter TRF(min) Vout = 1.0 V MA Vout = 2.0V ns 10pF Load 1.6 ns 20pF Load 55 175 250 % ps ps VT=1.25V VT=1.25V VT=1.25V 0.4 45 - 12 - Test Conditions MA -27 TRF(max) Dt TSK Tsc-c Max 40 40 0.4 IOL=1mA Symbol RDSP RDSN VOL Typ Units Ohm Ohm V Parameter Ouput Impedance Ouput Impedance Output Low Voltage Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY 7.4 Electronical Characteristics of 3V66 Clock Vdd=3.3V +/- 5%; CL=10-30pF Parameter Ouput Impedance Ouput Impedance Output Low Voltage Symbol RDSP RDSN Output High Voltage VOH 2.4 Output Low Current IOL 30 38 MA Output High Current IOH -33 -33 MA TRF(min) 0.4 Rise/Fall Time Min Between 0.4 V and 2.0 V Rise/Fall Time Max Between 0.4 V and 2.0 V Duty Cycle Skew Jitter Min 15 15 Typ VOL TRF(max) Dt TSK Tsc-c 45 Max 55 55 0.55 Units Ohm Ohm V Test Conditions IOL=1mA V IOH=-1mA ns 10pF Load 1.6 ns 20pF Load 55 175 500 % ps ps VT=1.5V VT=1.5V VT=1.5V Max 40 40 0.45 Units Ohm Ohm V IOL=1mA V IOH=-1mA 7.5 Electronical Characteristics of SDRAM Clock Vdd=3.3V +/- 5%; CL=20-30pF Parameter Ouput Impedance Ouput Impedance Output Low Voltage Symbol RDSP RDSN Output High Voltage VOH 2.4 Output Low Current IOL 54 54 MA Output High Current IOH -54 -45 MA TRF(min) 0.4 Rise/Fall Time Min Between 0.4 V and 2.0 V Rise/Fall Time Max Between 0.4 V and 2.0 V Duty Cycle Skew Jitter Min 13.5 13.5 VOL TRF(max) Dt TSK Tsc-c 45 - 13 - Typ Test Conditions ns 10pF Load 1.6 ns 20pF Load 55 250 250 % ps ps VT=1.5V VT=1.5V VT=1.5V Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY 7.6 Electronical Characteristics of PCI Clock Vdd=3.3V +/- 5%; CL=10-30pF Parameter Ouput Impedance Ouput Impedance Output Low Voltage Symbol RDSP RDSN Output High Voltage VOH 2.4 Output Low Current IOL 30 38 MA Output High Current IOH -33 -33 MA TRF(min) 0.5 Rise/Fall Time Min Between 0.4 V and 2.0 V Rise/Fall Time Max Between 0.4 V and 2.0 V Duty Cycle Skew Jitter Min 15 15 Typ VOL TRF(max) Dt TSK Tsc-c 45 Max 55 55 0.55 Units Ohm Ohm V Test Conditions IOL=1mA V IOH=-1mA ns 10pF Load 2.0 ns 20pF Load 55 500 500 % ps ps VT=1.5V VT=1.5V VT=1.5V 7.7 Electronical Characteristics of 48MHz, REF Clock Vdd=3.3V +/- 5%; CL=10-20pF Parameter Ouput Impedance Ouput Impedance Output Low Voltage Symbol RDSP RDSN Output High Voltage VOH 2.4 Output Low Current IOL 29 27 MA Output High Current IOH -29 -23 MA RiseTime TR 1.8 4 ns 10pF Load Fall Time TF Dt TSK Tsc-c 1.7 4 ns 20pF Load 55 500 1000 % ps ps VT=1.5V VT=1.5V VT=1.5V Duty Cycle Skew Jitter Min 20 20 Typ VOL 45 - 14 - Max 55 55 0.4 Units Ohm Ohm V Test Conditions IOL=1mA V IOH=-1mA Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY 8.0 ORDERING INFORMATION Part Number Package Type Production Flow W83195BR-25 56 PIN SSOP Commercial, 0°C to +70°C 9.0 HOW TO READ THE TOP MARKING W83195BR-25 28051234 814GAB 1st line: Winbond logo and the type number: W83195BR-25 2nd line: Tracking code 2 8051234 2: wafers manufactured in Winbond FAB 2 8051234: wafer production series lot number 3rd line: Tracking code 814 G A B 814: packages made in '98, week 14 G: assembly house ID; O means OSE, G means GR A: Internal use code - 15 - Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY B: IC revision All the trade marks of products and companies mentioned in this data sheet belong to their respective owners. - 16 - Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY 10.0 PACKAGE DRAWING AND DIMENSIONS .035 .045 DIMENSION IN MM SYMBOL .045 .055 0.40/0.50 DIA END VIEW E HE TOP VIEW SEE DETAIL "A" c D θ MAX. 0.110 0.016 0.092 0.0135 c 0.13 0.005 0.010 D HE 18.2 18.42 18.54 910.16 10.31 10.41 0.720 0.400 0.725 0.730 0.406 0.410 E 7.42 0.51 7.52 0.64 7.59 0.76 0.61 0.81 1.40 1.02 A A1 A2 b e A2 L L1 A Y SEATING PLANE A1 e b SIDE VIEW θ DIMENSION IN INCH MIN. NOM MAX. MIN. NOM 2.41 0.095 0.101 2.57 2.79 0.41 0.008 0.012 0.20 0.30 0.088 0.090 2.34 2.24 2.29 0.25 0.20 0.34 0.008 0.010 PARTING LINE Y c θ 0.25 0.08 8 0 0.292 0.296 0.299 0.020 0.025 0.030 0.024 0.032 0.040 0.055 0.003 0 8 L L1 DETAIL"A" Headquarters Winbond Electronics (H.K.) Ltd. No. 4, Creation Rd. III Science-Based Industrial Park Hsinchu, Taiwan TEL: 886-35-770066 FAX: 886-35-789467 www: http://www.winbond.com.tw/ Rm. 803, World Trade Square, Tower II 123 Hoi Bun Rd., Kwun Tong Kowloon, Hong Kong TEL: 852-27516023-7 FAX: 852-27552064 Winbond Electronics (North America) Corp. 2730 Orchard Parkway San Jose, CA 95134 U.S.A. TEL: 1-408-9436666 FAX: 1-408-9436668 Taipei Office 11F, No. 115, Sec. 3, Min-Sheng East Rd. Taipei, Taiwan TEL: 886-2-7190505 FAX: 886-2-7197502 TLX: 16485 WINTPE Please note that all data and specifications are subject to change without notice. All the trade marks of products and companies mentioned in this data sheet belong to their respective owners. These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Winbond customers using or selling these products for use in such applications do so at their - 17 - Publication Release Date: May 2000 Revision 0.52 W83195BR-25 PRELIMINARY own risk and agree to fully indemnify Winbond for any damages resulting from such improper use or s\\\\\\\\ - 18 - Publication Release Date: May 2000 Revision 0.52