ICS951413 Integrated Circuit Systems, Inc. Programmable System Clock Chip for ATI RS400 P4TM-based Systems Recommended Application: ATI RS400 systems using Intel P4TM processors Output Features: • 6 - Pairs of SRC/PCI Express* clocks • 2 - Pairs of programmable SRC/PCI Express (ATIG) clocks • 3 - Pairs of Intel P4 clocks • 3 - 14.318 MHz REF clocks • 1 - 48MHz USB clock • 1 - 33 MHz PCI clock seed Features/Benefits: • 2 - Programmable Clock Request pins for SRC clocks • Supports CK410 or CK409 frequency table mapping • Spread Spectrum for EMI reduction • Outputs may be disabled via SMBus • External crystal load capacitors for maximum frequency accuracy Key Specifications: • CPU outputs cycle-cycle jitter < 85ps • SRC output cycle-cycle jitter <125ps • PCI outputs cycle-cycle jitter < 250ps • +/- 300ppm frequency accuracy on CPU & SRC clocks Pin Configuration REF MHz 14.318 14.318 14.318 14.318 14.318 14.318 14.318 14.318 USB MHz 48.000 48.000 48.000 48.000 48.000 48.000 48.000 48.000 Functionality - (CK410# = 1) 1 FS_C 1 1 CPU Byte6 FS_B FS_A MHz bit5 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 100.00 200.00 133.33 166.67 200.00 400.00 266.67 333.33 SRC MHz PCI MHz REF MHz USB MHz 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 33.33 33.33 33.33 33.33 33.33 33.33 33.33 33.33 14.318 14.318 14.318 14.318 14.318 14.318 14.318 14.318 48.000 48.000 48.000 48.000 48.000 48.000 48.000 48.000 1. FS_C, FS_B and FS_A are low-threshold inputs. Please see the V IL_FS and VIH_FS specifications in the Input/Supply/Common Output Parameters Table for correct values. X1 X2 VDD48 USB_48MHz GND VTT_PWRGD#/PD SCLK SDATA **FS_C **CLKREQA# **CLKREQB# SRCCLKT7 SRCCLKC7 VDDSRC GNDSRC SRCCLKT6 SRCCLKC6 SRCCLKT5 SRCCLKC5 GNDSRC VDDSRC SRCCLKT4 SRCCLKC4 SRCCLKT3 SRCCLKC3 GNDSRC ATIGCLKT1 ATIGCLKC1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 ICS951413 Functionality - (CK410# = 0) SRC PCI 1 1 1 CPU FS_C FS_B FS_A MHz MHz MHz 0 266.66 100.00 33.33 0 1 133.33 100.00 33.33 0 0 200.00 100.00 33.33 1 1 166.66 100.00 33.33 0 333.33 100.00 33.33 0 1 100.00 100.00 33.33 1 0 400.00 100.00 33.33 1 1 RESERVED 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 VDDREF GND **FS_A/REF0 **FS_B/REF1 **TEST_SEL/REF2 VDDPCI **CK410#/PCICLK0 GNDPCI *CPU_STOP# CPUCLKT0 CPUCLKC0 VDDCPU GNDCPU CPUCLKT1 CPUCLKC1 CPUCLKT2_ITP CPUCLKC2_ITP VDDA GNDA IREF GNDSRC VDDSRC SRCCLKT0 SRCCLKC0 VDDATI GNDATI ATIGCLKT0 ATIGCLKC0 Note: Pins preceeded by '**' have a 120 Kohm Internal Pull Down resistor Pins preceeded by '*' have a 120 Kohm Internal Pull Up resistor 56-pin SSOP & TSSOP 0929C—03/07/05 *Other names and brands may be claimed as the property of others. ICS951413 Integrated Circuit Systems, Inc. Pin Description PIN # PIN NAME PIN TYPE 1 2 3 4 5 X1 X2 VDD48 USB_48MHz GND IN OUT PWR OUT PWR 6 VTT_PWRGD#/PD IN 7 8 9 SCLK SDATA **FS_C IN I/O IN 10 **CLKREQA# IN 11 **CLKREQB# IN 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 SRCCLKT7 SRCCLKC7 VDDSRC GNDSRC SRCCLKT6 SRCCLKC6 SRCCLKT5 SRCCLKC5 GNDSRC VDDSRC SRCCLKT4 SRCCLKC4 SRCCLKT3 SRCCLKC3 GNDSRC ATIGCLKT1 ATIGCLKC1 OUT OUT PWR PWR OUT OUT OUT OUT PWR PWR OUT OUT OUT OUT PWR OUT OUT DESCRIPTION Crystal input, Nominally 14.318MHz. Crystal output, Nominally 14.318MHz Power pin for the 48MHz output.3.3V 48.00MHz USB clock Ground pin. Vtt_PwrGd# is an active low input used to determine when latched inputs are ready to be sampled. PD is an asynchronous active high input pin used to put the device into a low power state. The internal clocks, PLLs and the crystal oscillator are stopped. Clock pin of SMBus circuitry, 5V tolerant. Data pin for SMBus circuitry, 5V tolerant. Frequency select latch input pin Dynamic Over Clocking pin: real time frequency selection 0: Normal; 1: Frequency will transition to a preprogrammed value in the I2c. / Output enable for PCI Express (SRC) outputs. SMBus selects which outputs are controlled. 0 = enabled, 1 = tri-stated Dynamic Over Clocking pin: real time frequency selection 0: Normal; 1: Frequency will transition to a preprogrammed value in the I2c. / Output enable for PCI Express (SRC) outputs. SMBus selects which outputs are controlled. 0 = enabled, 1 = tri-stated True clock of differential SRC clock pair. Complement clock of differential SRC clock pair. Supply for SRC clocks, 3.3V nominal Ground pin for the SRC outputs True clock of differential SRC clock pair. Complement clock of differential SRC clock pair. True clock of differential SRC clock pair. Complement clock of differential SRC clock pair. Ground pin for the SRC outputs Supply for SRC clocks, 3.3V nominal True clock of differential SRC clock pair. Complement clock of differential SRC clock pair. True clock of differential SRC clock pair. Complement clock of differential SRC clock pair. Ground pin for the SRC outputs True clock of differential SRC clock pair. Complementary clock of differential SRC clock pair. 0929C—03/07/05 2 ICS951413 Integrated Circuit Systems, Inc. Pin Description (Continued) PIN # PIN NAME 29 30 31 32 33 34 35 36 ATIGCLKC0 ATIGCLKT0 GNDATI VDDATI SRCCLKC0 SRCCLKT0 VDDSRC GNDSRC 37 IREF 38 39 GNDA VDDA 40 CPUCLKC2_ITP 41 CPUCLKT2_ITP 42 CPUCLKC1 43 CPUCLKT1 44 45 GNDCPU VDDCPU 46 CPUCLKC0 47 CPUCLKT0 48 49 *CPU_STOP# GNDPCI 50 **CK410#/PCICLK0 51 VDDPCI 52 **TEST_SEL/REF2 53 54 55 56 **FS_B/REF1 **FS_A/REF0 GND VDDREF PIN TYPE OUT OUT PWR PWR OUT OUT PWR PWR Pin Description Complementary clock of differential SRC clock pair. True clock of differential SRC clock pair. Ground for ATI Gclocks, nominal 3.3V Power supply ATI Gclocks, nominal 3.3V Complement clock of differential SRC clock pair. True clock of differential SRC clock pair. Supply for SRC clocks, 3.3V nominal Ground pin for the SRC outputs This pin establishes the reference current for the differential current-mode OUT 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. PWR Ground pin for the PLL core. PWR 3.3V power for the PLL core. Complementary clock of differential pair CPU outputs. These are current OUT mode outputs. External resistors are required for voltage bias. True clock of differential pair CPU outputs. These are current mode OUT outputs. External resistors are required for voltage bias. Complementary clock of differential pair CPU outputs. These are current OUT mode outputs. External resistors are required for voltage bias. True clock of differential pair CPU outputs. These are current mode OUT outputs. External resistors are required for voltage bias. PWR Ground pin for the CPU outputs PWR Supply for CPU clocks, 3.3V nominal Complementary clock of differential pair CPU outputs. These are current OUT mode outputs. External resistors are required for voltage bias. True clock of differential pair CPU outputs. These are current mode OUT outputs. External resistors are required for voltage bias. IN Stops all CPUCLK, except those set to be free running clocks PWR Ground pin for the PCI outputs FS Table select latch input pin / 3.3V PCI clock output. I/O 0 = CK410 FS Table, 1 = CK409 FS Table PWR Power supply for PCI clocks, nominal 3.3V TEST_SEL: latched input to select TEST MODE / 14.318 MHz reference clock. I/O 1 = All outputs are CK410 REF/N test mode 0 = All outputs behave normally. I/O Frequency select latch input pin / 14.318 MHz reference clock. I/O Frequency select latch input pin / 14.318 MHz reference clock. PWR Ground pin. PWR Ref, XTAL power supply, nominal 3.3V 0929C—03/07/05 3 ICS951413 Integrated Circuit Systems, Inc. General Description ICS951413 provides a single-chip clocking solution for the ATI RS400-based systems using the latest Intel P4 processors. ICS951413 is driven with a 14.318MHz crystal. It generates CPU outputs up to 400MHz and also provides highly accurate SRC clocks for PCI-Express support. Two Clock Request pins are provided for Express-CardTM support. Two of the SRC outputs (ATIGCLK(1:0)) are frequency programmable. Block Diagram REF(2:0) X1 X2 XTAL OSC. USB_48MHz FIXED PLL PCICLK0 PCI33 DIV CPU PLL CK410# FS_(C:A) CLKREQA# CLKREQB# CPU_STOP# CPU DIV CPUCLK(2:0) SRC DIV2 /8/7/6/5 ATIGCLK(1:0) SRC DIV1 SRCCLK(7:3,0) CONTROL LOGIC VTT_PWRGD#/PD SDATA SCLK SRC PLL IREF Power Groups Pin Number VDD GND 56 55 51 49 45 44 14, 21, 35 15, 20, 26, 36 32 31 39 38 3 5 Description Xtal, REF PCICLK output CPUCLK Outputs SRCCLK outputs ATIGCLK outputs Analog, CPU PLL USB_48MHz output 0929C—03/07/05 4 ICS951413 Integrated Circuit Systems, Inc. General SMBus serial interface information for the ICS951413 How to Write: How to Read: Controller (host) sends a start bit. Controller (host) sends the write address D2 (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 (see Note 2) • ICS clock will acknowledge each byte one at a time • Controller (host) sends a Stop bit • • • • • • • • • • • • • • • • • • • • • • Controller (host) will send start bit. Controller (host) sends the write address D2 (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 D3 (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 Index Block Write Operation Controller (Host) starT bit T Slave Address D2(H) WR WRite Index Block Read Operation Controller (Host) T starT bit Slave Address D2(H) WR WRite ICS (Slave/Receiver) ICS (Slave/Receiver) ACK ACK Beginning Byte = N Beginning Byte = N ACK ACK RT Repeat starT Slave Address D3(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 X Byte ACK P stoP bit Byte N + X - 1 N P 0929C—03/07/05 5 Not acknowledge stoP bit ICS951413 Integrated Circuit Systems, Inc. Table1: CPU Frequency Selection Table Bit 4 Bit 3 Bit2 Bit1 Bit0 CPU FS4 Byte0,bit6 FSC FSB FSA (CK410#) (SS_EN) 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 1 1 0 0 1 0 0 0 0 1 0 1 0 0 1 1 0 0 0 1 1 1 0 1 0 0 0 0 1 0 0 1 0 1 0 1 0 0 1 0 1 1 0 1 1 0 0 0 1 1 0 1 0 1 1 1 0 0 1 1 1 1 1 0 0 0 0 1 0 0 0 1 1 0 0 1 0 1 0 0 1 1 1 0 1 0 0 1 0 1 0 1 1 0 1 1 0 1 0 1 1 1 1 1 0 0 0 1 1 0 0 1 1 1 0 1 0 1 1 0 1 1 1 1 1 0 0 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 CPU (MHz) PCI33 (MHz) 266.6667 133.3333 200.0000 166.6668 333.3335 100.0000 400.0000 266.6667 133.3333 200.0000 166.6668 333.3335 100.0000 400.0000 100.0000 133.3333 200.0000 166.6668 200.0000 266.6667 400.0000 333.3335 100.0000 133.3333 200.0000 166.6668 200.0000 266.6667 400.0000 333.3335 0929C—03/07/05 6 Spread % 33.3333 33.3333 33.3333 33.3334 No Spread 33.3334 33.3333 33.3333 Reserved 33.3333 33.3333 33.3333 -0.5% 33.3334 33.3334 33.3333 33.3333 Reserved 33.3333 33.3333 33.3333 33.3334 No Spread 33.3333 33.3333 33.3333 33.3334 33.3333 33.3333 33.3333 33.3334 -0.5% 33.3333 33.3333 33.3333 33.3334 C K 4 1 0 C K 4 0 9 ICS951413 Integrated Circuit Systems, Inc. Table2: SRC & ATIG Frequency Selection Table Bit4 SRC(7:3,0), Bit3 Bit2 Bit1 Bit0 Spread SRC SRC FS4 ATIG(1:0) SRC FS3 FS2 FS1 FS0 % OverClock (SS_EN) (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 1 100.00 100.00 100.00 100.00 101.00 101.00 101.00 101.00 102.00 102.00 102.00 102.00 104.00 104.00 104.00 104.00 100.00 100.00 100.00 100.00 101.00 101.00 101.00 101.00 102.00 102.00 102.00 102.00 104.00 104.00 104.00 104.00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -0.5% -0.5% -0.5% -0.5% -0.5% -0.5% -0.5% -0.5% -0.5% -0.5% -0.5% -0.5% -0.5% -0.5% -0.5% -0.5% 0929C—03/07/05 7 1.00 1.00 1.00 1.00 1.01 1.01 1.01 1.01 1.02 1.02 1.02 1.02 1.04 1.04 1.04 1.04 1.00 1.00 1.00 1.00 1.01 1.01 1.01 1.01 1.02 1.02 1.02 1.02 1.04 1.04 1.04 1.04 ICS951413 Integrated Circuit Systems, Inc. Table 3: CPU Divider Ratios Divider (1:0) Divider (3:2) Bit 00 01 10 11 LSB 00 0000 0001 0010 0011 Address 2 3 5 15 Div 01 0100 0101 0110 0111 Address 4 3 5 15 Div 01 0100 0101 0110 0111 Address 2 3 5 7 Div 01 0100 0101 0110 0111 Address 4 6 10 30 Div 10 1000 1001 1010 1011 Address 8 12 20 60 Div 11 1100 1101 1110 1111 Address MSB 16 24 40 120 Div 10 1000 1001 1010 1011 Address 16 12 20 60 Div 11 1100 1101 1110 1111 Address MSB 32 24 40 120 Div 10 1000 1001 1010 1011 Address 8 12 20 28 Div 11 1100 1101 1110 1111 Address MSB 16 24 40 56 Div Table 4: PCI Divider Ratios Divider (1:0) Divider (3:2) Bit 00 01 10 11 LSB 00 0000 0001 0010 0011 Address 8 6 10 30 Div Table 5: SRC, ATIG Divider Ratios Divider (1:0) Divider (3:2) Bit 00 01 10 11 LSB 00 0000 0001 0010 0011 Address 4 6 10 14 Div Table 6: Test Clarification Table Comments HW TEST_SEL/REF2 HW PIN <0.8V >2.0V 1. Power-up w/ TEST_SEL/REF2 > 2.0V to enter test mode. 0929C—03/07/05 8 OUTPUT NORMAL HI-Z ICS951413 Integrated Circuit Systems, Inc. SMBus Table: Frequency Select Register Byte 0 Pin # Name Control Function Bit 7 - FS Source Type Latched Input or SMBus RW Frequency Select 0 1 PWD Latched Inputs SMBus 0 CPU FS3 CPU Freq Select Bit3 RW OFF ON (SS_EN) (Spread Enable) Reserved Reserved RW Reserved Reserved Bit 5 CK410# CPU Freq Select Bit 4 RW Bit 4 See Table 1: CPU Reserved Reserved RW Bit 3 Frequency Selection CPU FS_C CPU Freq Select Bit 2 RW Bit 2 Table CPU FS_B CPU Freq Select Bit 1 RW Bit 1 CPU FS_A CPU Freq Select Bit 0 RW Bit 0 NOTE: Byte 5 Bit 4 must also set to "1" in order to enable spread for SRC and ATIG clocks Bit 6 - SMBus Table: Output Control Register Pin # Name Byte 1 PCICLK0 50 Bit 7 CPUCLK2 41,40 Bit 6 USB_48MHz 4 Bit 5 REF0 54 Bit 4 REF1 53 Bit 3 REF2 52 Bit 2 CPUCLK0 47,46 Bit 1 CPUCLK1 43,42 Bit 0 Control Function Output Enable Output Enable Output Enable Output Enable Output Enable Output Enable Output Enable Output Enable SMBus Table: CLKREQB# Output Control Register Pin # Name Control Function Byte 2 CLKREQB# Controls 12,13 REQBSRC7 Bit 7 SRC7 CLKREQB# Controls REQBSRC6 16,17 Bit 6 SRC6 CLKREQB# Controls 18,19 REQBSRC5 Bit 5 SRC5 CLKREQB# Controls REQBSRC4 22,23 Bit 4 SRC4 CLKREQB# Controls REQBSRC3 24,25 Bit 3 SRC3 0 = CPU is free-run 47,46 CPU0_Stop_En 1 = CPU is stopped by Bit 2 CPU_STOP# Reserved Bit 1 CLKREQB# Controls 34,33 REQBSRC0 Bit 0 SRC0 NOTE: CPU0_Stop_En (Byte2, bit 2) only exists in devices with 0929C—03/07/05 9 0 X Latched 0 Latched Latched Latched Type RW RW RW RW RW RW RW RW 0 Disable Disable Disable Disable Disable Disable Disable Disable 1 Enable Enable Enable Enable Enable Enable Enable Enable PWD 1 1 1 1 1 1 1 1 Type 0 Does not control Does not control Does not control Does not control Does not control 1 PWD Controls 0 Controls 0 Controls 0 Controls 0 Controls 0 Stoppable 1 Reserved Reserved Does not RW Controls control REV ID = 2 or higher X RW RW RW RW RW RW RW Free-Run 0 ICS951413 Integrated Circuit Systems, Inc. SMBus Table: SRCCLK(7:3,0), CLKREQA# Output Control Register Pin # Name Control Function Type Byte 3 12,13 SRCCLK7 RW Bit 7 Master Output control. 16,17 SRCCLK6 RW Bit 6 Enables or disables 18,19 SRCCLK5 RW Bit 5 output, regardless of 22,23 SRCCLK4 RW Bit 4 CLKREQ# inputs. 24,25 SRCCLK3 RW Bit 3 34,33 SRCCLK0 RW Bit 2 CLKREQA# Controls 24,25 REQASRC3 RW Bit 1 SRC3 CLKREQA# Controls 34,33 REQASRC0 RW Bit 0 SRC0 SMBus Table: SRCCLK(3,0), ATIGCLK Output Control Register Byte 4 Pin # Name Control Function CLKREQA# Controls 12,13 REQASRC7 Bit 7 SRC7 CLKREQA# Controls 16,17 REQASRC6 Bit 6 SRC6 CLKREQA# Controls REQASRC5 18,19 Bit 5 SRC5 CLKREQA# Controls REQASRC4 22,23 Bit 4 SRC4 Output Enable 27,28 ATIGCLK1 Bit 3 These outputs cannot be controlled by CLKREQ# 30,29 ATIGCLK0 Bit 2 pins. Type RW RW RW RW 0 Disable Disable Disable Disable Disable Disable Does not control Does not control 0 Does not control Does not control Does not control Does not control 1 Enable Enable Enable Enable Enable Enable PWD 1 1 1 1 1 1 Controls 0 Controls 0 1 PWD Controls 0 Controls 0 Controls 0 Controls 0 RW Disabled Enabled 1 RW Disabled Enabled 1 Bit 1 CPU, SRC, ATIG Differential Output Disable Mode Hi-Z or driven when disabled RW Driven Hi-Z 0 Bit 0 4 USB_48Str 48MHz Strength Control RW 1X 2X 1 NOTE: Do NOT simultaneously select CLKREQA# and CLKREQB# to control an SRC output. Behavior of the device is undefined under these conditions. SMBus Table: Output Drive and ATIG Frequency Control Register Pin # Name Control Function Type Byte 5 52 REF2Str REF2 Strength Control RW Bit 7 Bit 6 41,40 CPU2_Stop_En Bit 5 43,42 CPU1_Stop_En 0 = CPU is free-run 1 = CPU is stopped by CPU_STOP# 0 1X 1 2X PWD 1 RW Free-Run Stoppable 1 RW Free-Run Stoppable 1 SRCFS4 Freq Select Bit 4 RW (SS_EN) (SS_EN) See Table 2 SRC SRCFS3 Freq Select Bit 3 RW Bit 3 Frequency Selection SRCFS2 Freq Select Bit 2 RW Bit 2 SRCFS1 Freq Select Bit 1 RW Bit 1 SRCFS0 Freq Select Bit 0 RW Bit 0 NOTE: CPU(1:2)_Stop_En (Byte5, bit 6:5) only exist in devices with REV ID = 2 or higher Bit 4 - 0929C—03/07/05 10 0 0 0 0 0 ICS951413 Integrated Circuit Systems, Inc. SMBus Table: Device ID Register Byte 6 Pin # Name DevID 7 Bit 7 DevID 6 Bit 6 DevID 5 Bit 5 DevID 4 Bit 4 DevID 3 Bit 3 DevID 2 Bit 2 DevID 1 Bit 1 DevID 0 Bit 0 SMBus Table: Vendor ID Register Byte 7 Pin # Name RID3 Bit 7 RID2 Bit 6 RID1 Bit 5 RID0 Bit 4 VID3 Bit 3 VID2 Bit 2 VID1 Bit 1 VID0 Bit 0 SMBus Table: Byte Count Register Byte 8 Pin # Name BC7 Bit 7 BC6 Bit 6 BC5 Bit 5 BC4 Bit 4 BC3 Bit 3 BC2 Bit 2 BC1 Bit 1 BC0 Bit 0 Control Function Device ID MSB Device ID 6 Device ID 5 Device ID4 Device ID3 Device ID2 Device ID1 Device ID LSB Type R R R R R R R R 0 - 1 - PWD 0 0 0 1 0 0 1 1 Control Function Type R R R R R R R R 0 - 1 - PWD X X X X 0 0 0 1 Revision ID Starts at 0 hex for A revsion. VENDOR ID (0001 = ICS) Control Function Byte Count Programming b(7:0) Type 0 1 RW RW RW Writing to this register will configure how many RW RW bytes will be read back, default is 9 bytes. RW RW RW SMBus Table: WD TimeR Control Register Byte 9 Pin # Name Control Function Type 0 1 Watchdog Hard Alarm WDH_EN RW Disable Enable Bit 7 Enable Watchdog Soft Alarm WDS_EN RW Disable Enable Bit 6 Enable WD Hard Status WD Hard Alarm Status R Normal Alarm Bit 5 WD Soft Status WD Soft Alarm Status R Normal Alarm Bit 4 Watch Dog Time base 1160ms WDTCtrl RW 290ms Base Bit 3 Control Base These bits represent WD2 WD Timer Bit 2 RW Bit 2 X*290ms (or 1.16S) the watchdog timer waits WD1 WD Timer Bit 1 RW Bit 1 before it goes to alarm mode. Default is 7 X WD0 WD Timer Bit 0 RW Bit 0 290ms = 2s. 0929C—03/07/05 11 PWD 0 0 0 0 1 0 0 1 PWD 0 0 X X 0 1 1 1 ICS951413 Integrated Circuit Systems, Inc. SMBus Table: M/N Programming & WD Safe Frequency Control Register 0 1 Pin # Name Control Function Type Byte 10 PLLS M/N Programming M/N_EN RW Disable Enable Bit 7 Enable Reserved Reserved RW Bit 6 WD Safe Freq Latch WD Safe Freq Source RW B10b(4:0) Bit 5 Source Inputs WD SF4 RW Bit 4 Writing to these bit will WD SF3 RW Bit 3 Watch Dog Safe Freq configure the safe WD SF2 RW Bit 2 Programming bits frequency as Byte0 bit WD SF1 RW Bit 1 (4:0). WD SF0 RW Bit 0 PWD 0 0 0 0 0 0 0 0 SMBus Table: CPU Frequency Control Register 0 1 Pin # Name Control Function Type Byte 11 The decimal N Div8 N Divider Prog bit 8 RW Bit 7 N Div9 N Divider Prog bit 9 RW representation of M and Bit 6 M Div5 RW N Divier in Byte 11 and Bit 5 M Div4 RW 12 will configure the CPU Bit 4 M Divider Programming RW VCO frequency. Default M Div3 Bit 3 bit (5:0) M Div2 RW at power up = latch-in or Bit 2 M Div1 RW Byte 0 Rom table. VCO Bit 1 Frequency = 14.318 x M Div0 RW Bit 0 PWD X X X X X X X X SMBus Table: CPU Frequency Control Register 0 1 Pin # Name Control Function Type Byte 12 N Div7 RW The decimal Bit 7 N Div6 RW representation of M and Bit 6 N Div5 RW N Divier in Byte 11 and Bit 5 N Divider Programming N Div4 RW 12 will configure the CPU Bit 4 Byte12 bit(7:0) and N Div3 RW VCO frequency. Default Bit 3 Byte11 bit(7:6) N Div2 RW at power up = latch-in or Bit 2 N Div1 RW Byte 0 Rom table. VCO Bit 1 N Div0 RW Frequency = 14.318 x Bit 0 PWD X X X X X X X X SMBus Table: CPU Spread Spectrum Control Register Byte 13 Pin # Name Control Function SSP7 Bit 7 SSP6 Bit 6 SSP5 Bit 5 Spread Spectrum SSP4 Bit 4 Programming bit(7:0) SSP3 Bit 3 SSP2 Bit 2 SSP1 Bit 1 SSP0 Bit 0 PWD X X X X X X X X 0929C—03/07/05 12 0 1 Type RW RW RW These Spread Spectrum RW bits in Byte 13 and 14 will program the spread RW pecentage of CPU RW RW RW ICS951413 Integrated Circuit Systems, Inc. SMBus Table: CPU Spread Spectrum Control Register Byte 14 Pin # Name Control Function Reserved Reserved Bit 7 SSP14 Bit 6 SSP13 Bit 5 SSP12 Bit 4 Spread Spectrum SSP11 Bit 3 Programming bit(14:8) SSP10 Bit 2 SSP9 Bit 1 SSP8 Bit 0 0 1 Type R RW RW These Spread Spectrum RW bits in Byte 13 and 14 will RW program the spread RW pecentage of CPU RW RW PWD 0 X X X X X X X SMBus Table: SRC Frequency Control Register Byte 15 0 1 Pin # Name Control Function Type The decimal N Div8 N Divider Prog bit 8 RW Bit 7 N Div9 N Divider Prog bit 9 RW representation of M and Bit 6 M Div5 RW N Divier in Byte 15 and Bit 5 M Div4 RW 16 will configure the SRC Bit 4 M Divider Programming M Div3 RW VCO frequency. Default Bit 3 bits M Div2 RW at power up = latch-in or Bit 2 M Div1 RW Byte 0 Rom table. VCO Bit 1 Frequency = 14.318 x M Div0 RW Bit 0 PWD X X X X X X X X SMBus Table: SRC Frequency Control Register Byte 16 Pin # Name Control Function Type 0 1 N Div7 RW The decimal Bit 7 N Div6 RW representation of M and Bit 6 N Div5 RW N Divier in Byte 15 and Bit 5 N Divider Programming N Div4 RW 16 will configure the SRC Bit 4 b(7:0) N Div3 RW VCO frequency. Default Bit 3 N Div2 RW at power up = latch-in or Bit 2 N Div1 RW Byte 0 Rom table. VCO Bit 1 Frequency = 14.318 x N Div0 RW Bit 0 PWD X X X X X X X X SMBus Table: SRC Spread Spectrum Control Register Byte 17 Pin # Name Control Function SSP7 Bit 7 SSP6 Bit 6 SSP5 Bit 5 Spread Spectrum SSP4 Bit 4 Programming b(7:0) SSP3 Bit 3 SSP2 Bit 2 SSP1 Bit 1 SSP0 Bit 0 PWD X X X X X X X X 0929C—03/07/05 13 Type 0 1 RW RW RW These Spread Spectrum RW bits in Byte 17 and 18 will program the spread RW pecentage of SRC RW RW RW ICS951413 Integrated Circuit Systems, Inc. SMBus Table: SRC Spread Spectrum Control Register Pin # Name Control Function Byte 18 Reserved Reserved Bit 7 SSP14 Bit 6 SSP13 Bit 5 SSP12 Bit 4 Spread Spectrum SSP11 Bit 3 Programming b(14:8) SSP10 Bit 2 SSP9 Bit 1 SSP8 Bit 0 0 1 Type R RW RW These Spread Spectrum RW bits in Byte 17 and 18 will RW program the spread RW pecentage of SRC RW RW PWD 0 X X X X X X X SMBus Table: Programmable Output Divider Register Byte 19 Pin # Name Control Function CPUDiv3 Bit 7 CPU Divider Ratio CPUDiv2 Bit 6 Programming Bits CPUDiv1 Bit 5 CPUDiv0 Bit 4 PCIDiv3 Bit 3 PCI Divider Ratio PCIDiv2 Bit 2 Programming Bits PCIDiv1 Bit 1 PCIDiv0 Bit 0 Type 0 1 RW RW See Table 3: CPU Divider Ratios RW RW RW RW See Table 4: PCI Divider Ratios RW RW PWD X X X X X X X X SMBus Table: Programmable Output Divider Register Byte 20 Pin # Name Control Function SRC_Div3 Bit 7 SRC_ Divider Ratio SRC_Div2 Bit 6 Programming Bits SRC_Div1 Bit 5 SRC_Div0 Bit 4 ATIG_Div3 Bit 3 ATIG_ Divider Ratio ATIG_Div2 Bit 2 Programming Bits ATIG_Div1 Bit 1 ATIG_Div0 Bit 0 Type 0 1 RW RW RW RW See Table 5: ATIG and SRC Divider Ratios RW RW RW RW PWD X X X X X X X X SMBusTable: Test Byte Register Byte 21 Test ` Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Type RW RW RW RW RW RW RW RW PWD 0 0 0 0 0 0 0 0 Test Function ICS ONLY TEST ICS ONLY TEST ICS ONLY TEST ICS ONLY TEST ICS ONLY TEST ICS ONLY TEST ICS ONLY TEST ICS ONLY TEST 0929C—03/07/05 14 Test Result Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved ICS951413 Integrated Circuit Systems, Inc. Absolute Max Symbol Parameter VDD_A VDD_In 3.3V Core Supply Voltage 3.3V Logic Input Supply Voltage Ts Tambient Tcase Storage Temperature Ambient Operating Temp Case Temperature Input ESD protection human body model ESD prot Min Max Units GND - 0.5 VDD + 0.5V VDD + 0.5V V V -65 0 ° C °C °C 150 70 115 2000 V Electrical Characteristics - Input/Supply/Common Output Parameters TA = 0 - 70°C; Supply Voltage V DD = 3.3 V +/-5% Input High Voltage SYMBO L VIH Input Low Voltage Input High Current VIL I IH PARAMETER MAX UNITS Notes 2 VDD + 0.3 V 1 V SS - 0.3 -5 0.8 5 V uA 1 1 -5 uA 1 -200 uA 1 V IH_FS 3.3 V +/-5% 0.7 VDD + 0.3 V 1 V SS - 0.3 0.35 V 1 400 70 12 7 5 6 5 mA mA mA MHz nH pF pF pF 1 1 1 3 1 1 1 1 1.8 ms 1,2 33 kHz 1 300 us 1 5 5 5.5 0.4 ns ns V V 1 2 1 1 mA 1 1000 ns 1 300 ns 1 I IL2 Low Threshold InputLow Voltage Operating Current V IL_FS 3.3 V +/-5% IDD3.3OP Powerdown Current IDD3.3PD Input Frequency Pin Inductance Fi Lpin CIN COUT CINX all outputs driven all diff pairs driven all differential pairs tri-stated V DD = 3.3 V Clk Stabilization TYP 3.3 V +/-5% V IN = V DD V IN = 0 V; Inputs with no pullup resistors V IN = 0 V; Inputs with pull-up resistors I IL1 Input Capacitance MIN 3.3 V +/-5% Input Low Current Low Threshold InputHigh Voltage CONDITIONS TSTAB Modulation Frequency Tdrive_PD# Tfall_Pd# Trise_Pd# SMBus Voltage VDD Low-level Output Voltage VOL Current sinking at I PULLUP VOL = 0.4 V SCLK/SDATA TRI2C Clock/Data Rise Time SCLK/SDATA TFI2C Clock/Data Fall Time 14.31818 Logic Inputs Output pin capacitance X1 & X2 pins From VDD Power-Up or deassertion of PD# to 1st clock Triangular Modulation CPU output enable after PD# de-assertion PD# fall time of PD# rise time of 30 2.7 @ IPULLUP 4 (Max VIL - 0.15) to (Min VIH + 0.15) (Min VIH + 0.15) to (Max VIL - 0.15) 1 Guaranteed by design and characterization, not 100% tested in production. See timing diagrams for timing requirements. 3 Input frequency should be measured at the REFOUT pin and tuned to ideal 14.31818MHz to meet ppm frequency accuracy on PLL outputs. 2 0929C—03/07/05 15 ICS951413 Integrated Circuit Systems, Inc. Electrical Characteristics - CPU 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 CONDITIONS MIN Zo VO = Vx 3000 Voltage High VHigh Statistical measurement on single ended signal using oscilloscope math function. Measurement on single ended signal using absolute value. 660 Voltage Low VLow Max Voltage Min Voltage Crossing Voltage (abs) Vovs Vuds Vcross(abs) Crossing Voltage (var) d-Vcross Long Accuracy ppm Average period Tperiod Absolute min period Tabsmin Rise Time Fall Time Rise Time Variation Fall Time Variation tr tf d-tr d-tf Variation of crossing over all edges see Tperiod min-max values 400MHz nominal 400MHz spread 333.33MHz nominal 333.33MHz spread 266.66MHz nominal 266.66MHz spread 200MHz nominal 200MHz spread 166.66MHz nominal 166.66MHz spread 133.33MHz nominal 133.33MHz spread 100.00MHz nominal 100.00MHz spread 400MHz nominal/spread 333.33MHz nominal/spread 266.66MHz nominal/spread 200MHz nominal/spread 166.66MHz nominal/spread 133.33MHz nominal/spread 100.00MHz nominal/spread 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 -300 2.4993 2.4993 2.9991 2.9991 3.7489 3.7489 4.9985 4.9985 5.9982 5.9982 7.4978 7.4978 9.9970 9.9970 2.4143 2.9141 3.6639 4.8735 5.8732 7.3728 9.8720 175 175 1,3 550 mV 1 1 1 140 mV 1 300 2.5008 2.5133 3.0009 3.016 3.7511 3.77 5.0015 5.0266 6.0018 6.0320 7.5023 7.5400 10.0030 10.0533 ppm ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ps ps ps ps 1,2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1 1 1 1 700 700 125 125 mV Measurement from differential 45 55 % wavefrom CPU(1:0), VT = 50% tsk3 100 ps Skew CPU(1:0) to CPU2_ITP, tsk4 Skew 150 ps VT = 50% Measurement from differential tjcyc-cyc Jitter, Cycle to cycle 125 ps wavefrom (CPU2_ITP) Measurement from differential tjcyc-cyc Jitter, Cycle to cycle 85 ps wavefrom, (CPU(1:0)) 1 Guaranteed by design and characterization, not 100% tested in production. 2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 14.31818MHz 3 IREF = VDD/(3xRR). For RR = 475Ω (1%), IREF = 2.32mA. IOH = 6 x IREF and VOH = 0.7V @ ZO=50Ω. Duty Cycle dt3 0929C—03/07/05 16 1 1 1 1 1 ICS951413 Integrated Circuit Systems, Inc. Electrical Characteristics - SRC 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 SYMBOL CONDITIONS MIN Current Source Output Impedance Voltage High Voltage Low Max Voltage Min Voltage Zo VO = Vx 3000 VHigh VLow Vovs Vuds Statistical measurement on single ended signal Measurement on single ended signal using 660 -150 Crossing Voltage (abs) Vcross(abs) Crossing Voltage (var) d-Vcross Long Accuracy ppm Average period Tperiod Absolute min period Tabsmin Rise Time tr Fall Time tf Rise Time Variation Fall Time Variation d-tr d-tf TYP MAX Ω 850 150 1150 -300 250 Variation of crossing over all edges see Tperiod min-max -300 values 100.00MHz nominal 9.9970 100.00MHz spread 9.9970 100.00MHz 9.8720 nominal/spread VOL = 0.175V, 175 VOH = 0.525V VOH = 0.525V 175 VOL = 0.175V UNITS Notes mV mV 1 1,3 1,3 1 1 350 550 mV 1 12 140 mV 1 300 ppm 1,2 10.0030 10.0533 ns ns 2 2 ns 1,2 700 ps 1 700 ps 1 125 125 ps ps 1 1 30 30 Measurement from 45 55 % 1 differential wavefrom VT = 50% tsk3 250 ps 1 Skew Measurement from tjcyc-cyc Jitter, Cycle to cycle 125 ps 1 differential wavefrom 1 Guaranteed by design and characterization, not 100% tested in production. 2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 14.31818MHz 3 IREF = VDD/(3xRR). For RR = 475Ω (1%), IREF = 2.32mA. IOH = 6 x IREF and VOH = 0.7V @ ZO=50Ω. Duty Cycle dt3 0929C—03/07/05 17 ICS951413 Integrated Circuit Systems, Inc. Electrical Characteristics - PCICLK/PCICLK_F TA = 0 - 70°C; VDD = 3.3 V +/-5%; CL = 10-20 pF (unless otherwise specified) PARAMETER SYMBOL CONDITIONS MIN Long Accuracy ppm Clock period Tperiod Output High Voltage Output Low Voltage VOH VOL see Tperiod min-max values 33.33MHz output nominal 33.33MHz output spread IOH = -1 mA IOL = 1 mA V OH @MIN = 1.0 V VOH@ MAX = 3.135 V VOL @ MIN = 1.95 V VOL @ MAX = 0.4 V -300 29.9910 29.9910 2.4 Rising edge rate Falling edge rate VOL = 0.4 V, VOH = 2.4 V VOH = 2.4 V, VOL = 0.4 V VT = 1.5 V VT = 1.5 V 1 1 0.5 0.5 45 Output High Current IOH Output Low Current IOL Edge Rate Edge Rate Rise Time Fall Time Duty Cycle Jitter tr1 tf1 dt1 tjcyc-cyc TYP MAX 300 30.0090 30.1598 0.55 -33 -33 30 38 4 4 2 2 55 250 UNITS Notes ppm ns ns V V mA mA mA mA V/ns V/ns ns ns % ps 1,2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 Guaranteed by design and characterization, not 100% tested in production. 2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 14.31818MHz Electrical Characteristics - 48MHz, USB TA = 0 - 70°C; VDD = 3.3 V +/-5%; CL = 10-20 pF (unless otherwise specified) PARAMETER SYMBOL CONDITIONS MIN Long Accuracy Clock period Output High Voltage Output Low Voltage ppm Tperiod VOH VOL see Tperiod min-max values 48.00MHz output nominal IOH = -1 mA IOL = 1 mA V OH @ MIN = 1.0 V VOH@ MAX = 3.135 V VOL @MIN = 1.95 V VOL @ MAX = 0.4 V Rising edge rate Falling edge rate VOL = 0.4 V, VOH = 2.4 V VOH = 2.4 V, VOL = 0.4 V VT = 1.5 V VT = 1.5 V -100 20.8313 2.4 Output High Current Output Low Current IOH IOL Edge Rate Edge Rate Rise Time Fall Time Duty Cycle Jitter, Cycle to cycle 1 2 tr1 tf1 dt1 tjcyc-cyc TYP MAX 100 20.8354 38 2 2 ppm ns V V mA mA mA mA V/ns V/ns 1,2 2 1 1 1 1 1 1 1 1 2 2 55 175 ns ns % ps 1 1 1 1 0.55 -33 -33 30 1 1 1 1 45 UNITS Notes Guaranteed by design and characterization, not 100% tested in production. All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 14.31818MHz 0929C—03/07/05 18 ICS951413 Integrated Circuit Systems, Inc. Electrical Characteristics - REF-14.318MHz TA = 0 - 70°C; VDD = 3.3 V +/-5%; CL = 10-20 pF (unless otherwise specified) PARAMETER SYMBOL Long Accuracy Clock period Output High Voltage Output Low Voltage ppm Tperiod VOH VOL Output High Current IOH Output Low Current IOL Rise Time Fall Time Skew Duty Cycle tr1 tf1 tsk1 dt1 Jitter tjcyc-cyc CONDITIONS MIN see Tperiod min-max values -300 14.318MHz output nominal 69.8270 IOH = -1 mA 2.4 IOL = 1 mA VOH @MIN = 1.0 V, -29 VOH@MAX = 3.135 V VOL @MIN = 1.95 V, VOL 29 @MAX = 0.4 V VOL = 0.4 V, VOH = 2.4 V 1 VOH = 2.4 V, VOL = 0.4 V 1 VT = 1.5 V VT = 1.5 V 45 VT = 1.5 V 1 TYP MAX 300 69.8550 UNITS Notes 0.4 ppm ns V V 1 1 1 1 -23 mA 1 27 mA 1 2 2 500 55 ns ns ps % 1 1,2 2 1,2 1000 ps 1 Guaranteed by design and characterization, not 100% tested in production. 2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 14.31818MHz 0929C—03/07/05 19 ICS951413 Integrated Circuit Systems, Inc. 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 Down Device Differential Routing L4 length, Route as coupled microstrip 100 ohm differential trace. L4 length, Route as coup led stripline 100 ohm differential trace. Differential Routing to PCI Express Connector L4 length, Route as coupled microstrip 100 ohm differential trace. L4 length, Rout e as coupled stripline 100 ohm differential trace. L1 Unit inch inch inch ohm ohm Figure 2, 3 2, 3 2, 3 2, 3 2, 3 Dimension or Value 2 min to 16 max Unit inch 2 1.8 min to 14.4 max inch 2 Dimension or Value 0.25 to 14 max Unit inch 3 0.225 min to 12.6 max inch 3 Figure L2 L4 Rs L1’ L4’ L2’ Rs Fig.1 Figure Rt HSCL Output Buffer Rt L3’ L1 PCI Ex REF_CLK Test Load L3 L2 L4 Rs L1’ Fig.2 L4’ L2’ Rs Rt HSCL Output Buffer L3’ L1 Rt PCI Ex Board Down Device REF_CLK Input L3 L2 L4 Rs L4’ L1’ L2’ Rs Fig.3 Rt HSCL Output Buffer L3’ 0929C—03/07/05 20 Rt L3 PCI Ex Add In Board REF_CLK Input ICS951413 Integrated Circuit Systems, Inc. Shared Pin Operation Input/Output Pins The I/O pins designated by (input/output) on the ICS951416 serve as dual signal functions to the device. During initial power-up, they act as input pins. The logic level (voltage) that is present on these pins at this time is read and stored into a 5-bit internal data latch. At the end of Power-On reset, (see AC characteristics for timing values), the device changes the mode of operations for these pins to an output function. In this mode the pins produce the specified buffered clocks to external loads. the pin will be pulled high. With the jumper in place the pin will be pulled low. If programmability is not necessary, than only a single resistor is necessary. The programming resistors should be located close to the series termination resistor to minimize the current loop area. It is more important to locate the series termination resistor close to the driver than the programming resistor. To program (load) the internal configuration register for these pins, a resistor is connected to either the VDD (logic 1) power supply or the GND (logic 0) voltage potential. A 10 Kilohm (10K) resistor is used to provide both the solid CMOS programming voltage needed during the power-up programming period and to provide an insignificant load on the output clock during the subsequent operating period. Figure 1 shows a means of implementing this function when a switch or 2 pin header is used. With no jumper is installed Via to VDD Programming Header 2K W Via to Gnd Device Pad 8.2K W Clock trace to load Series Term. Res. Fig. 1 0929C—03/07/05 21 ICS951413 Integrated Circuit Systems, Inc. c N 56-Lead, 300 mil Body, 25 mil, SSOP L E1 INDEX AREA E 1 2 α h x 45° D A A1 A A1 b c D E E1 e h L N a In Millimeters COMMON DIMENSIONS MIN MAX 2.41 2.80 0.20 0.40 0.20 0.34 0.13 0.25 SEE VARIATIONS 10.03 10.68 7.40 7.60 0.635 BASIC 0.38 0.64 0.50 1.02 SEE VARIATIONS 0° 8° In Inches COMMON DIMENSIONS MIN MAX .095 .110 .008 .016 .008 .0135 .005 .010 SEE VARIATIONS .395 .420 .291 .299 0.025 BASIC .015 .025 .020 .040 SEE VARIATIONS 0° 8° VARIATIONS -C- e SYMBOL SEATING PLANE b .10 (.004) C N 56 D mm. MIN 18.31 D (inch) MAX 18.55 MIN .720 Reference Doc.: JEDEC Publication 95, MO-118 10-0034 Ordering Information ICS951413yFLFT Example: ICS XXXX y F LF T Designation for tape and reel packaging Annealed Lead Free (optional) Package Type F = SSOP Revision Designator (will not correlate with datasheet revision) Device Type (consists of 3 or 4 digit numbers) Prefix ICS, AV = Standard Device 0929C—03/07/05 22 MAX .730 ICS951413 Integrated Circuit Systems, Inc. c N L E1 INDEX AREA E 1 2 a D A A2 A1 56-Lead 6.10 mm. Body, 0.50 mm. Pitch TSSOP (240 mil) (20 mil) In Millimeters In Inches SYMBOL COMMON DIMENSIONS COMMON DIMENSIONS MIN MAX MIN MAX A -1.20 -.047 A1 0.05 0.15 .002 .006 A2 0.80 1.05 .032 .041 b 0.17 0.27 .007 .011 c 0.09 0.20 .0035 .008 D SEE VARIATIONS SEE VARIATIONS E 8.10 BASIC 0.319 BASIC E1 6.00 6.20 .236 .244 e 0.50 BASIC 0.020 BASIC L 0.45 0.75 .018 .030 N SEE VARIATIONS SEE VARIATIONS a 0° 8° 0° 8° aaa -0.10 -.004 -Ce b SEATING PLANE VARIATIONS N aaa C 56 D mm. MIN MAX 13.90 14.10 D (inch) MIN .547 Reference Doc.: JEDEC Publicat ion 95, M O-153 10-0039 Ordering Information ICS951413yGLFT Example: ICS XXXX y G LF T Designation for tape and reel packaging Annealed Lead Free (optional) Package Type G = TSSOP Revision Designator (will not correlate with datasheet revision) Device Type (consists of 3 or 4 digit numbers) Prefix ICS, AV = Standard Device 0929C—03/07/05 23 MAX .555