DATASHEET ICS9DB401C Four Output Differential Buffer for PCI Express Description Features/Benefits The 9DB401C is a DB400 Version 2.0 Yellow Cover part with PCI Express support. It can be used in PC or embedded systems to provide outputs that have low cycle-to-cycle jitter (50ps), low output-to-output skew (100ps), and are PCI Express gen 1 compliant. The 9DB401C supports a 1 to 4 output configuration, taking a spread or non spread differential HCSL input from a CK410(B) main clock such as 954101 and 932S401, or any other differential HCSL pair. 9DB401C can generate HCSL or LVDS outputs from 50 to 200MHz in PLL mode or 0 to 400Mhz in bypass mode. There are two de-jittering modes available selectable through the HIGH_BW# input pin, high bandwidth mode provides de-jittering for spread inputs and low bandwidth mode provides extra de-jittering for non-spread inputs. The SRC_STOP#, PD#, and OE real-time input pins provide completely programmable power management control. • Spread spectrum modulation tolerant, 0 to -0.5% down spread and +/- 0.25% center spread • Supports undriven differential outputs in PD# and SRC_STOP# modes for power management. Key Specifications • • • Outputs cycle-cycle jitter: < 50ps Outputs skew: < 50ps Extended frequency range in bypass mode: Revision B: up to 333.33MHz Revision C: up to 400MHz Real-time PLL lock detect output pin 28-pin SSOP/TSSOP package Available in RoHS compliant packaging • • • Output Features • • • 4 - 0.7V HCSL or LVDS differential output pairs Supports zero delay buffer mode and fanout mode Bandwidth programming available Funtional Block Diagram 4 OE(3:0) SPREAD COMPATIBLE PLL SRC_IN SRC_IN# M U X PD BYPASS#/PLL SDATA SCLK 4 STOP LOGIC DIF(3:0)) CONTROL LOGIC IREF Note: Polarities shown for OE_INV = 0. IDTTM/ICSTM Four Output Differential Buffer for PCI Express ICS9DB401C 1 REV E 03/18/08 ICS9DB401C Four Output Differential Buffer for PCI Express 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 ICS9DB401 (same as ICS9DB104) VDD SRC_IN SRC_IN# GND VDD DIF_1 DIF_1# OE_1 DIF_2 DIF_2# VDD BYPASS#/PLL SCLK SDATA VDD SRC_IN SRC_IN# GND VDD DIF_1 DIF_1# OE1# DIF_2 DIF_2# VDD BYPASS#/PLL SCLK SDATA VDDA GNDA IREF OE_INV VDD DIF_6 DIF_6# OE_6 DIF_5 DIF_5# VDD HIGH_BW# SRC_STOP# PD# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ICS9DB401 Pin Configuration 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VDDA GNDA IREF OE_INV VDD DIF_6 DIF_6# OE6# DIF_5 DIF_5# VDD HIGH_BW# SRC_STOP PD OE_INV = 1 OE_INV = 0 28-pin SSOP & TSSOP Polarity Inversion Pin List Table Power Groups Pin Number VDD GND 1 4 5,11,18, 24 4 N/A 27 28 27 OE_INV Pins 0 1 8 OE_1 OE1# 15 PD# PD 16 DIF_STOP# DIF_STOP 21 OE_6 OE6# IDTTM/ICSTM Four Output Differential Buffer for PCI Express Description SRC_IN/SRC_IN# DIF(1,2,5,6) IREF Analog VDD & GND for PLL core ICS9DB401C 2 REV E 03/18/08 ICS9DB401C Four Output Differential Buffer for PCI Express Pin Description for OE_INV = 0 PIN # 1 2 3 4 5 6 7 PIN NAME VDD SRC_IN SRC_IN# GND VDD DIF_1 DIF_1# PIN TYPE PWR IN IN PWR PWR OUT OUT 8 OE_1 9 10 11 DIF_2 DIF_2# VDD 12 BYPASS#/PLL IN 13 14 SCLK SDATA IN I/O 15 PD# IN 16 SRC_STOP# IN 17 HIGH_BW# IN 18 19 20 VDD DIF_5# DIF_5 21 OE_6 22 23 24 DIF_6# DIF_6 VDD OUT OUT PWR 25 OE_INV IN 26 IREF OUT 27 28 GNDA VDDA PWR PWR IN OUT OUT PWR PWR OUT OUT IN DESCRIPTION Power supply, nominal 3.3V 0.7 V Differential SRC TRUE input 0.7 V Differential SRC COMPLEMENTARY input Ground pin. Power supply, nominal 3.3V 0.7V differential true clock output 0.7V differential complement clock output Active high input for enabling output 1. 0 = tri-state outputs, 1= enable outputs 0.7V differential true clock output 0.7V differential complement clock output Power supply, nominal 3.3V Input to select Bypass(fan-out) or PLL (ZDB) mode 0 = Bypass mode, 1= PLL mode Clock pin of SMBus circuitry, 5V tolerant. Data pin for SMBus circuitry, 5V tolerant. Asynchronous active low input pin used to power down the device. The internal clocks are disabled and the VCO and the crystal are stopped. Active low input to stop SRC outputs. 3.3V input for selecting PLL Band Width 0 = High, 1= Low Power supply, nominal 3.3V 0.7V differential complement clock output 0.7V differential true clock output Active high input for enabling output 6. 0 = tri-state outputs, 1= enable outputs 0.7V differential complement clock output 0.7V differential true clock output Power supply, nominal 3.3V This latched input selects the polarity of the OE pins. 0 = OE pins active high, 1 = OE pins active low (OE#) This pin establishes the reference current for the differential currentmode output pairs. This pin requires a fixed precision resistor tied to ground in order to establish the appropriate current. 475 ohms is the standard value. Ground pin for the PLL core. 3.3V power for the PLL core. IDTTM/ICSTM Four Output Differential Buffer for PCI Express ICS9DB401C 3 REV E 03/18/08 ICS9DB401C Four Output Differential Buffer for PCI Express Pin Description for OE_INV = 1 PIN # 1 2 3 4 5 6 7 8 PIN NAME VDD SRC_IN SRC_IN# GND VDD DIF_1 DIF_1# OE1# PIN TYPE PWR IN IN PWR PWR OUT OUT IN 9 10 11 DIF_2 DIF_2# VDD OUT OUT PWR 12 BYPASS#/PLL IN 13 14 SCLK SDATA IN I/O 15 PD IN 16 SRC_STOP IN 17 HIGH_BW# IN 18 19 20 VDD DIF_5# DIF_5 21 OE6# 22 23 24 DIF_6# DIF_6 VDD OUT OUT PWR 25 OE_INV IN 26 IREF OUT 27 28 GNDA VDDA PWR PWR PWR OUT OUT IN DESCRIPTION Power supply, nominal 3.3V 0.7 V Differential SRC TRUE input 0.7 V Differential SRC COMPLEMENTARY input Ground pin. Power supply, nominal 3.3V 0.7V differential true clock output 0.7V differential complement clock output Active low input for enabling DIF pair 1. 1 = tri-state outputs, 0 = enable outputs 0.7V differential true clock output 0.7V differential complement clock output Power supply, nominal 3.3V Input to select Bypass(fan-out) or PLL (ZDB) mode 0 = Bypass mode, 1= PLL mode Clock pin of SMBus circuitry, 5V tolerant. Data pin for SMBus circuitry, 5V tolerant. Asynchronous active high input pin used to power down the device. The internal clocks are disabled and the VCO is stopped. Active high input to stop SRC outputs. 3.3V input for selecting PLL Band Width 0 = High, 1= Low Power supply, nominal 3.3V 0.7V differential complement clock output 0.7V differential true clock output Active low input for enabling DIF pair 6. 1 = tri-state outputs, 0 = enable outputs 0.7V differential complement clock output 0.7V differential true clock output Power supply, nominal 3.3V This latched input selects the polarity of the OE pins. 0 = OE pins active high, 1 = OE pins active low (OE#) This pin establishes the reference current for the differential current-mode output pairs. This pin requires a fixed precision resistor tied to ground in order to establish the appropriate current. 475 ohms is the standard value. Ground pin for the PLL core. 3.3V power for the PLL core. IDTTM/ICSTM Four Output Differential Buffer for PCI Express ICS9DB401C 4 REV E 03/18/08 ICS9DB401C Four Output Differential Buffer for PCI Express Absolute Max Symbol VDD_A VDD_In VIL VIH Parameter 3.3V Core Supply Voltage 3.3V Logic Supply Voltage Input Low Voltage Input High Voltage Ts Tambient Tcase Storage Temperature Ambient Operating Temp Case Temperature Input ESD protection human body model ESD prot Min Max 4.6 4.6 GND-0.5 VDD+0.5V -65 0 Units V V V V ° 150 70 115 C °C °C 2000 V Electrical Characteristics - Input/Supply/Common Output Parameters TA = 0 - 70°C; Supply Voltage V DD = 3.3 V +/-5% PARAMETER SYMBOL Input High Voltage Input Low Voltage Input High Current V IH VIL I IH I IL1 Input Low Current CONDITIONS VIN = 0 V; Inputs with pull-up resistors Operating Supply Current I DD3.3PLL I DD3.3ByPass Full Active, CL = Full load; Powerdown Current I DD3.3PD Input Frequency FiPLL Input Frequency FiBypass Input Frequency FiBypass Pin Inductance1 Lpin CIN COUT PLL Bandwidth BW Clk Stabilization1,2 TSTAB Modulation Frequency fMOD Tdrive_SRC_STOP# Tdrive_PD# Tfall Trise TYP 3.3 V +/-5% 2 3.3 V +/-5% GND - 0.3 V IN = VDD -5 V IN = 0 V; Inputs with no pull-5 up resistors I IL2 Input Capacitance1 MIN MAX VDD + 0.3 0.8 5 uA 175 160 Logic Inputs Output pin capacitance PLL Bandwidth when PLL_BW=0 PLL Bandwidth when PLL_BW=1 50 200 175 40 4 200 mA mA mA mA MHz 0 333.33 MHz 0 400 MHz 1.5 7 4 4 nH pF pF 1 1 1 2.4 3 3.4 MHz 1 0.7 1 1.4 MHz 1 0.5 1 ms 1,2 33 kHz 1 15 ns 1,3 300 us 1,3 5 ns 1 5 ns 2 From VDD Power-Up and after input clock stabilization or deassertion of PD# to 1st clock Triangular Modulation DIF output enable after SRC_Stop# de-assertion DIF output enable after PD# de-assertion Fall time of PD# and SRC_STOP# Rise time of PD# and SRC_STOP# V V uA uA -200 all diff pairs driven all differential pairs tri-stated PLL Mode Bypass Mode (Revision B/REV ID = 1H) Bypass Mode (Revision C/REV ID = 2H) UNITS NOTES 30 10 1 Guaranteed by design and characterization, not 100% tested in production. See timing diagrams for timing requirements. 3 Time from deassertion until outputs are >200 mV 2 IDTTM/ICSTM Four Output Differential Buffer for PCI Express ICS9DB401C 5 REV E 03/18/08 ICS9DB401C Four Output Differential Buffer for PCI Express Electrical Characteristics - Clock Input Parameters TA = 0 - 70°C; Supply Voltage V DD = 3.3 V +/-5% PARAMETER SYMBOL Differential Input High Voltage VIHDIF Differential Input Low Voltage VILDIF Input Slew Rate - DIF_IN dv/dt Input Leakage Current IIN Input Duty Cycle Input SRC Jitter - Cycle to Cycle CONDITIONS MIN MAX UNITS NOTES 600 1150 mV 1 VSS - 300 300 mV 1 0.4 8 V/ns 2 VIN = VDD , VIN = GND -5 5 uA 1 dtin Measurement from differential wavefrom 45 55 % 1 SRCJ C2CIn Differential Measurement 125 ps 1 Differential inputs (single-ended measurement) Differential inputs (single-ended measurement) Measured differentially 1 Guaranteed by design and characterization, not 100% tested in production. Slew rate measured through Vswing centered around differential zero 2 Electrical Characteristics - DIF 0.7V Current Mode Differential Pair TA = 0 - 70°C; VDD = 3.3 V +/-5%; CL =2pF, RS=33.2Ω, RP=49.9Ω, ΙREF = 475Ω PARAMETER Current Source Output Impedance SYMBOL Voltage High VHigh Zo CONDITIONS MIN VO = Vx 3000 Statistical measurement on single ended signal using oscilloscope math function. Measurement on single ended signal using absolute value. 660 1 Voltage Low VLow Max Voltage Min Voltage Crossing Voltage (abs) Vovs Vuds Vcross(abs) Crossing Voltage (var) d-Vcross Long Accuracy Rise Time Fall Time Rise Time Variation Fall Time Variation ppm tr tf d-tr d-tf Variation of crossing over all edges see Tperiod min-max values VOL = 0.175V, VOH = 0.525V VOH = 0.525V VOL = 0.175V TYP MAX UNITS NOTES Ω 1 850 1,3 mV -150 150 1150 -300 250 175 175 1,3 550 mV 1 1 1 140 mV 1 0 700 700 125 125 ppm ps ps ps ps 1,2 1 1 1 1 mV Measurement from differential 45 55 % wavefrom VT = 50% tsk3 50 ps Skew PLL mode, 50 ps Measurement from differential tjcyc-cyc Jitter, Cycle to cycle wavefrom BYPASS mode as additive jitter 50 ps 1 Guaranteed by design and characterization, not 100% tested in production. 2 All Long Term Accuracy and Clock Period specifications are guaranteed with the assumption that the input clock complies with CK409/CK410 accuracy requirements 3 IREF = VDD/(3xRR). For RR = 475Ω (1%), IREF = 2.32mA. IOH = 6 x IREF and VOH = 0.7V @ ZO=50Ω. Duty Cycle dt3 IDTTM/ICSTM Four Output Differential Buffer for PCI Express ICS9DB401C 6 1 1 1 1 REV E 03/18/08 ICS9DB401C Four Output Differential Buffer for PCI Express SRC Reference Clock Common Recommendations for Differential Routing Dimension or Value L1 length, Route as non-coupled 50 ohm trace. 0.5 max L2 length, Route as non-coupled 50 ohm trace. 0.2 max L3 length, Route as non-coupled 50 ohm trace. 0.2 max Rs 33 Rt 49.9 Unit inch inch inch ohm ohm Figure 1 1 1 1 1 Down Device Differential Routing L4 length, Route as coupled microstrip 100 ohm differential trace. L4 length, Route as coupled stripline 100 ohm differential trace. Dimension or Value 2 min to 16 max 1.8 min to 14.4 max Unit inch inch Figure 1 1 Differential Routing to PCI Express Connector L4 length, Route as coupled microstrip 100 ohm differential trace. L4 length, Route as coupled stripline 100 ohm differential trace. Dimension or Value 0.25 to 14 max 0.225 min to 12.6 max Unit inch inch Figure 2 2 Figure 1 Down device routing. L1 L2 L4 Rs L1’ L4’ L2’ Rs Rt HSCL Output Buffer L3’ Rt PCI Ex Board Down Device REF_CLK Input L3 Figure 1 Figure 2 PCI Express Connector Routing. L1 L2 L4 Rs L1’ L4’ L2’ Rs HSCL Output Buffer Rt L3’ Rt L3 PCI Ex Add In Board REF_CLK Input Figure 2 IDTTM/ICSTM Four Output Differential Buffer for PCI Express ICS9DB401C 7 REV E 03/18/08 ICS9DB401C Four Output Differential Buffer for PCI Express Alternative termination for LVDS and other common differential signals. Figure 3. Vdiff Vp-p 0.45 v 0.22v 0.58 0.28 0.80 0.40 0.60 0.3 R1a = R1b = R1 Vcm 1.08 0.6 0.6 1.2 R1 33 33 33 33 R2 150 78.7 78.7 174 R3 100 137 none 140 R4 100 100 100 100 Note ICS874003i-02 input compatible Standard LVDS Figure_3. L1 L2 R3 L4 R1a L1’ L4’ L2’ R1b R2a HSCL Output Buffer R4 R2b Down Device REF_CLK Input L3 L3’ R2a = R2b = R2 Cable connected AC coupled application, figure 4 Component R5a,R5b R6a,R6b Cc Vcm Value 8.2K 5% 1K 5% 0.1 uF 0.350 volts Note 3.3 Volts R5a R5b L4 L4’ Cc Cc R6a R6b PCIe Device REF_CLK Input Figure_4. IDTTM/ICSTM Four Output Differential Buffer for PCI Express ICS9DB401C 8 REV E 03/18/08 ICS9DB401C Four Output Differential Buffer for PCI Express General SMBus serial interface information for the ICS9DB401C How to Write: How to Read: Controller (host) sends a start bit. Controller (host) sends the write address DC (h) ICS clock will acknowledge Controller (host) sends the begining byte location = N ICS clock will acknowledge Controller (host) sends the data byte count = X ICS clock will acknowledge Controller (host) starts sending Byte N through Byte N + X -1 • ICS clock will acknowledge each byte one at a time • Controller (host) sends a Stop bit • • • • • • • • • • • • • • • • • • • • • • Index Block Read Operation Index Block Write Operation Controller (Host) starT bit T Slave Address DC(h) WRite WR Controller (host) will send start bit. Controller (host) sends the write address DC (h) ICS clock will acknowledge Controller (host) sends the begining byte location = N ICS clock will acknowledge Controller (host) will send a separate start bit. Controller (host) sends the read address DD (h) ICS clock will acknowledge ICS clock will send the data byte count = X ICS clock sends Byte N + X -1 ICS clock sends Byte 0 through byte X (if X(h) was written to byte 8). Controller (host) will need to acknowledge each byte Controllor (host) will send a not acknowledge bit Controller (host) will send a stop bit Controller (Host) T starT bit Slave Address DC(h) WR WRite ICS (Slave/Receiver) ICS (Slave/Receiver) ACK ACK Beginning Byte = N Beginning Byte = N ACK ACK RT Repeat starT Slave Address DD(h) RD ReaD Data Byte Count = X ACK Beginning Byte N ACK X Byte ACK Data Byte Count = X ACK Beginning Byte N Byte N + X - 1 ACK P X Byte ACK stoP bit Byte N + X - 1 N P IDTTM/ICSTM Four Output Differential Buffer for PCI Express Not acknowledge stoP bit ICS9DB401C 9 REV E 03/18/08 ICS9DB401C Four Output Differential Buffer for PCI Express SMBus Table: Frequency Select Register, READ/WRITE ADDRESS Pin # Name Control Function Byte 0 PD_Mode PD# drive mode Bit 7 STOP_Mode SRC_Stop# drive mode Bit 6 Power Down PD_SRC_INV Bit 5 and SRC Invert Reserved Reserved Bit 4 Reserved Reserved Bit 3 PLL_BW# Select PLL BW Bit 2 BYPASS# BYPASS#/PLL Bit 1 SRC_DIV# SRC Divide by 2 Select Bit 0 (DC/DD) 0 Type RW driven RW driven RW RW RW RW RW RW SMBus Table: Output Control Register Byte 1 Pin # Name Reserved Bit 7 22,23 DIF_6 Bit 6 19,20 DIF_5 Bit 5 Reserved Bit 4 Reserved Bit 3 9,10 DIF_2 Bit 2 6,7 DIF_1 Bit 1 Reserved Bit 0 Control Function Reserved Output Control Output Control Reserved Reserved Output Control Output Control Reserved Type RW RW RW RW RW RW RW RW SMBus Table: Output Control Register Pin # Name Byte 2 Reserved Bit 7 22,23 DIF_6 Bit 6 DIF_5 19,20 Bit 5 Reserved Bit 4 Reserved Bit 3 9,10 DIF_2 Bit 2 6,7 DIF_1 Bit 1 Reserved Bit 0 Control Function Reserved Output Control Output Control Reserved Reserved Output Control Output Control Reserved Type RW RW RW RW RW RW RW RW SMBus Table: Output Control Register Byte 3 Pin # Name Control Function Reserved Bit 7 Reserved Bit 6 Reserved Bit 5 Reserved Bit 4 Reserved Bit 3 Reserved Bit 2 Reserved Bit 1 Reserved Bit 0 Type RW RW RW RW RW RW RW RW IDTTM/ICSTM Four Output Differential Buffer for PCI Express Normal 1 Hi-Z Hi-Z PWD 0 0 Invert 0 X X 1 1 1 Reserved Reserved High BW Low BW fan-out ZDB x/2 1x 0 1 Reserved Disable Enable Disable Enable Reserved Reserved Disable Enable Disable Enable Reserved 0 1 Reserved Free-run Stoppable Free-run Stoppable Reserved Reserved Free-run Stoppable Free-run Stoppable Reserved 0 1 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved PWD X 1 1 X X 1 1 X PWD X 0 0 X X 0 0 X PWD X X X X X X X X ICS9DB401C 10 REV E 03/18/08 ICS9DB401C Four Output Differential Buffer for PCI Express SMBus Table: Vendor & Revision ID Register Byte 4 Pin # Name Control Function RID3 Bit 7 RID2 Bit 6 REVISION ID RID1 Bit 5 RID0 Bit 4 VID3 Bit 3 VID2 Bit 2 VENDOR ID VID1 Bit 1 VID0 Bit 0 Type R R R R R R R R 0 - SMBus Table: DEVICE ID Byte 5 Pin # Name Control Function Device ID 7 (MSB) Bit 7 Device ID 6 Bit 6 Device ID 5 Bit 5 Device ID 4 Bit 4 Device ID 3 Bit 3 Device ID 2 Bit 2 Device ID 1 Bit 1 Device ID 0 Bit 0 Type RW RW RW RW RW RW RW RW 0 Control Function Type Writing to this register configures how many bytes will be read back. RW RW RW RW RW RW RW RW 1 - PWD X X X X 0 0 0 1 1 PWD 0 1 0 0 0 0 0 1 0 1 PWD - - 0 0 0 0 0 1 1 1 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved SMBus Table: Byte Count Register Byte 6 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Pin # - Name BC7 BC6 BC5 BC4 BC3 BC2 BC1 BC0 IDTTM/ICSTM Four Output Differential Buffer for PCI Express ICS9DB401C 11 REV E 03/18/08 ICS9DB401C Four Output Differential Buffer for PCI Express PD# The PD# pin cleanly shuts off all clocks and places the device into a power saving mode. PD# must be asserted before shutting off the input clock or power to insure an orderly shutdown. PD is asynchronous active-low input for both powering down the device and powering up the device. When PD# is asserted, all clocks will be driven high, or tri-stated (depending on the PD# drive mode and Output control bits) before the PLL is shut down. PD# Assertion When PD# is sampled low by two consecutive rising edges of DIF#, all DIF outputs must be held High, or tri-stated (depending on the PD# drive mode and Output control bits) on the next High-Low transition of the DIF# outputs. When the PD# drive mode bit is set to ‘0’, all clock outputs will be held with DIF driven High with 2 x IREF and DIF# tri-stated. If the PD# drive mode bit is set to ‘1’, both DIF and DIF# are tri-stated. PWRDWN# DIF DIF# PD# De-assertion Power-up latency is less than 1 ms. This is the time from de-assertion of the PD# pin, or VDD reaching 3.3V, or the time from valid SRC_IN clocks until the time that stable clocks are output from the device (PLL Locked). If the PD# drive mode bit is set to ‘1’, all the DIF outputs must driven to a voltage of >200 mV within 300 ms of PD# de-assertion. Tstable <1mS PWRDWN# DIF DIF# Tdrive_PwrDwn# <300uS, >200mV IDTTM/ICSTM Four Output Differential Buffer for PCI Express ICS9DB401C 12 REV E 03/18/08 ICS9DB401C Four Output Differential Buffer for PCI Express Note: Polarities in timing diagrams are shown OE_INV = 0. They are similar to OE_INV = 1. SRC_STOP# The SRC_STOP# signal is an active-low asynchronous input that cleanly stops and starts the DIF outputs. A valid clock must be present on SRC_IN for this input to work properly. The SRC_STOP# signal is de-bounced and must remain stable for two consecutive rising edges of DIF# to be recognized as a valid assertion or de-assertion. SRC_STOP# - Assertion (transition from '1' to '0') Asserting SRC_STOP# causes all DIF outputs to stop after their next transition (if the control register settings allow the output to stop). When the SRC_STOP# drive bit is ‘0’, the final state of all stopped DIF outputs is DIF = High and DIF# = Low. There is no change in output drive current. DIF is driven with 6xIREF. DIF# is not driven, but pulled low by the termination. When the SRC_STOP# drive bit is ‘1’, the final state of all DIF output pins is Low. Both DIF and DIF# are not driven. All stopped differential outputs resume normal operation in a glitch-free manner. The de-assertion latency to active outputs is 2-6 DIF clock periods, with all DIF outputs resuming simultaneously. If the SRC_STOP# drive control bit is ‘1’ (tri-state), all stopped DIF outputs must be driven High (>200 mV) within 10 ns of de-assertion. SRC_STOP_1 (SRC_Stop = Driven, PD = Driven) 1mS SRC_Stop# PWRDWN# DIF (Free Running) DIF# (Free Running) DIF (Stoppable) DIF# (Stoppable) SRC_STOP_2 (SRC_Stop =Tristate, PD = Driven) 1mS SRC_Stop# PWRDWN# DIF (Free Running) DIF# (Free Running) DIF (Stoppable) DIF# (Stoppable) 13 ICS9DB401C Four Output Differential Buffer for PCI Express SRC_STOP_3 (SRC_Stop = Driven, PD = Tristate) 1mS SRC_Stop# PWRDWN# DIF (Free Running) DIF# (Free Running) DIF (Stoppable) DIF# (Stoppable) SRC_STOP_4 (SRC_Stop = Tristate, PD = Tristate) 1mS SRC_Stop# PWRDWN# DIF (Free Running) DIF# (Free Running) DIF (Stoppable) DIF# (Stoppable) IDTTM/ICSTM Four Output Differential Buffer for PCI Express ICS9DB401C 14 REV E 03/18/08 ICS9DB401C Four Output Differential Buffer for PCI Express 209 mil SSOP In Millimeters In Inches SYMBOL COMMON DIMENSIONS COMMON DIMENSIONS MIN MAX MIN MAX A -2.00 -.079 A1 0.05 -.002 -A2 1.65 1.85 .065 .073 b 0.22 0.38 .009 .015 c 0.09 0.25 .0035 .010 SEE VARIATIONS SEE VARIATIONS D E 7.40 8.20 .291 .323 E1 5.00 5.60 .197 .220 0.65 BASIC 0.0256 BASIC e L 0.55 0.95 .022 .037 SEE VARIATIONS SEE VARIATIONS N α 0° 8° 0° 8° c N L E1 INDEX AREA E 1 2 α D A A2 A1 VARIATIONS -Ce N SEATING PLANE b 28 .10 (.004) C D mm. MIN 9.90 D (inch) MAX 10.50 MIN .390 MAX .413 Reference Doc.: JEDEC Publication 95, MO-150 10-0033 Ordering Information ICS9DB401CFLFT Example: ICS XXXX C F LF T Designation for tape and reel packaging RoHS Compliant (Optional) Package Type F = SSOP Revision Designator Device Type (consists of 3 to 7 digit numbers) Prefix ICS = Standard Device IDTTM/ICSTM Four Output Differential Buffer for PCI Express ICS9DB401C 15 REV E 03/18/08 ICS9DB401C Four Output Differential Buffer for PCI Express 4.40 mm. Body, 0.65 mm. Pitch TSSOP c N (173 mil) L E1 INDEX AREA SYMBOL A A1 A2 b c D E E1 e L N a aaa E 1 2 α D A A2 (25.6 mil) In Millimeters COMMON DIMENSIONS MIN MAX -1.20 0.05 0.15 0.80 1.05 0.19 0.30 0.09 0.20 SEE VARIATIONS 6.40 BASIC 4.30 4.50 0.65 BASIC 0.45 0.75 SEE VARIATIONS 0° 8° -0.10 In Inches COMMON DIMENSIONS MIN MAX -.047 .002 .006 .032 .041 .007 .012 .0035 .008 SEE VARIATIONS 0.252 BASIC .169 .177 0.0256 BASIC .018 .030 SEE VARIATIONS 0° 8° -.004 VARIATIONS A1 N -Ce 28 SEATING PLANE b D mm. MIN 9.60 D (inch) MAX 9.80 MIN .378 MAX .386 Reference Doc.: JEDEC Publication 95, MO-153 aaa C 10-0035 Ordering Information ICS9DB401CGLFT Example: ICS XXXX C G LF T Designation for tape and reel packaging RoHS Compliant (Optional) Package Type G = TSSOP Revision Designator Device Type (consists of 3 to 7 digit numbers) Prefix ICS = Standard Device IDTTM/ICSTM Four Output Differential Buffer for PCI Express ICS9DB401C 16 REV E 03/18/08 ICS9DB401C Four Output Differential Buffer for PCI Express Revision History Rev. 0.1 A B C D E Issue Date Description 4/21/2005 Changed Ordering Information from"LN" to "LF". 1. Updated LF Ordering Information to RoHS Compliant. 8/15/2005 2. Release to web. 9/7/2006 Updated Electrical Characteristics. 5/22/2007 Updated Polarity Inversion Table. 2/28/2008 Added Input Clock Specs 3/18/2008 Fixed typo in clock Input Parameters Page # 14,15 14-15 Various 2 6 6 Innovate with IDT and accelerate your future networks. Contact: www.IDT.com TM For Sales For Tech Support 800-345-7015 408-284-8200 Fax: 408-284-2775 408-284-6578 [email protected] Corporate Headquarters Asia Pacific and Japan Europe Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States 800 345 7015 +408 284 8200 (outside U.S.) Integrated Device Technology Singapore (1997) Pte. Ltd. Reg. No. 199707558G 435 Orchard Road #20-03 Wisma Atria Singapore 238877 +65 6 887 5505 IDT Europe, Limited Prime House Barnett Wood Lane Leatherhead, Surrey United Kingdom KT22 7DE +44 1372 363 339 © 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA 17