White Electronic Designs WED3C7410E16M-400BX RISC Microprocessor Multichip Package *PRELIMINARY OVERVIEW The WED3C7410E16M-400BX is offered in Commercial (0°C to +70°C), industrial (-40°C to +85°C) and military (-55°C to +125°C) temperature ranges and is well suited for embedded applications such as missiles, aerospace, flight computers, fire control systems and rugged critical systems. The WEDC 7410E/SSRAM multichip package is targeted for high performance, space sensitive, low power systems and supports the following power management features: doze, nap, sleep and dynamic power management. *This data sheet describes a product that is developmental, is not qualified or characterized and is subject to change without notice. The WED3C7410E16M-400BX multichip package consists of: • 7410E AltiVec RISC processor FEATURES • Dedicated 2MB SSRAM L2 cache, configured as 256Kx72 n Footprint compatible with WED3C7558M-XBX and WED3C750A8M-200BX • 21mmx25mm, 255 Ceramic Ball Grid Array (CBGA) • Maximum Core frequency = 400MHz @ 1.8V n Implementation of Altivec technology instruction set • Maximum L2 Cache frequency = 200MHz n Optional, high-bandwidth MPX bus interface • Maximum 60x Bus frequency = 100MHz FIG. 1 MULTI-CHIP PACKAGE DIAGRAM AltiVec is a trademark of Motorola Inc. October 2002 Rev. 5 1 White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com White Electronic Designs Corporation • Phoenix AZ • (602) 437-1520 2 128-Bit SSRAM 64- 32-Bit L2 Data Bus 32-Bit + L2PMCR L2CR L2 Tags 64-Bit Data Bus 32-Bit Address Bus L2 Data Transaction Queue L2 Controller .. Interger Unit 2 Interger Unit 1 + x Reservation Station GPR File 6 Rename Buffers Vector Touch Queue .. L2 Castout L2 Miss 32-Bit PA Data Transaction Queue Bus Interface Unit 32-Bit System Register Unit Reservation Station Dispatch Unit IBAT Array DBAT Array 64-Bit .. Instruction Reload Buffer Instruction Reload Table Data Reload Data Reload Table Buffer 64-Bit 32-Kbyte I Cache .. FPSCR + x Floating-Point Unit Reservation Station 32-Kbyte I Cache Tags 128-Bit (4 Instructions) FPR File 6 Rename Buffers Tags Memory Subsystem L1 Complete Stores Operations (EA Calculation) Load Fold Finished Queue Stores + Load/Store Unit Reservation Station (2 Entry) 128-Entry DTLB SRs (Original) Data MMU CTR LR EA 128-Entry DTLB BHT (512 Entry) BTIC (64 Entry) Reservation Station 128-Bit 19-Bit L2 Address Bus .. VR File 6 Rename Buffers Ability to complete up to two instructions per clock SSRAM Completion Queue (8 Entry) Completion Unit VSCR Vector ALU Vector Permute Unit VSIU VCIU VFPU Reservation Station Instruction Queue (6 Word) SRs (Shadow) Branch Processing Unit FIG. 2 Reservation Station Additional Features Time Base Counter/Decrementer Clock Muliplier JTAG/COP Interface Thermal/Power Management Performance Monitor Fetcher Instruction MMU White Electronic Designs WED3C7410E16M-400BX BLOCK DIAGRAM White Electronic Designs WED3C7410E16M-400BX FIG. 3 B LOCK DIAGRAM, L2 I NTERCONNECT SSRAM 1 L2pin_DATA DQa L2pin_DATA DQb L2pin_DATA DQc L2pin_DATA DQd U1 DP0-3 L2DP0-3 FT SBd SBc SBb SBa SW ADSP ADV SE2 K SGW SE1 L2 CLK_OUT A L2WE L2CE L2Vdd ADSC SE3 LBO SA0-17 G ZZ µP 7410E A0-17 SSRAM 2 SA0-17 SGW SE1 K L2CLK_OUT B U2 L2Vdd FT SBd SBc SBb SBa SW ADSP ADV L2pin_DATA DQa L2pin_DATA DQb L2pin_DATA DQc SE3 DQd LBO L2pin_DATA SE2 ADSC G DP0-3 L2DP4-7 ZZ L2ZZ 3 White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com White Electronic Designs WED3C7410E16M-400BX FIG. 5 P IN ASSIGNMENTS Ball assignments of the 255 CBGA package as viewed from the top surface. Side profile of the CBGA package to indicate the direction of the top surface view. White Electronic Designs Corporation • Phoenix AZ • (602) 437-1520 4 White Electronic Designs WED3C7410E16M-400BX PACKAGE PINOUT LISTING Signal Name A[0-31] Pin Number C16, E4, D13, F2, D14, G1, D15, E2, D16, D4, E13, G2, E15, H1, E16, H2, F13, J1, F14, J2, F15, H3, F16, F4, G13, K1, G15, K2, H16, M1, J15, P1 Active High I/O I/O AACK ABB/AMONO (8) L2 K4 Low Low Input Output AP[0-3] ARTRY C1, B4, B3, B2 J4 High Low I/O I/O AVDD BG A10 L1 — Low Input Input BR BVSEL (4, 6) B6 B1 Low High Output Input CHK (5, 6, 13) CI C6 E1 Low Low Input I/O CKSTP_IN CKSTP_OUT D8 A6 Low Low Input Ouput CLK_OUT DBB/DMONO (8) D7 J14 High Low Output Output DBG DBWO/DTI[0] N1 G4 Low Low Input Input DH[0-31] P14, T16, R15, T15, R13, R12, P11, N11, R11, T12, T11, R10, P9, N9, T10, R9, T9, P8, N8, R8, T8, N7, R7, T7, P6, N6, R6, T6, R5, N5, T5, T4 High I/O DL[0-31] K13, K15, K16, L16, L15, L13, L14, M16, M15, M13, N16, N15, N13, N14, P16, P15, R16, R14, T14, N10, P13, N12, T13, P3, N3, N4, R3, T1, T2, P4, T3, R4 High I/O DP[0-7] DRDY (5, 9, 12) M2, L3, N2, L4, R1, P2, M4, R2 D5 High Low I/O Output DTI 1-2 (9, 11) EMODE (10, 11) G16, H15 C4 High Low Input Input GBL GND F1 C5, C12, E3, E6, E8, E9, E11, E14, F3, F5, F7, F10, F12, G6, G8, G9, G11, H5, H7, H10, H12, Low — I/O — HIT (5) (12) J5, J7, J10, J12, K6, K8, K9, K11, L5, L7, L10, L12, M3, M6, M8, M9, M11, M14, P5, P12 A3 Low Output HRESET INT A7 B15 Low Low Input Input L1_TSTCLK (1) L2_TSTCLK (1) D11 D12 High High Input Input L2AVDD L2VDD (5) (7) L11 A2, B8, C3, D6, J16 — — L2OVDD L2VSEL (3, 6) E10, E12, M12, G12, G14, K12, K14 B5 LSSD_MODE (1) MCP 1.8V (7) 2.5V (7) 3.3V (7) 1.8V 1.8V GND HRESET OVDD GND GND GND Input Input 1.8V 3.3V 1.8V 3.3V 1.8V 3.3V — High Input Input *— 2.5V N/A HRESET N/A B10 C13 Low Low Input Input NC (No-connect) OVDD (2) B7, C8 C7, E5, G3, G5, K3, K5, P7, P10, E7, M5, M7, M10 — — — Input PLL_CFG[0-3] QACK A8, B9, A9, D9 D3 High Low Input Input QREQ RSRV J3 D1 Low Low Output Output SHD0-1 (5) (14) SMI A4, A5 A16 Low Low I/O Input SRESET B14 Low Input 5 1.8V 3.3V 1.8V 2.5V White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com 3.3V White Electronic Designs WED3C7410E16M-400BX PACKAGE PINOUT L ISTING (CONTINUED ) Signal Name Active I/O SYSCLK C9 Pin Number — Input TA H14 Low Input TBEN C2 High Input TBST A14 Low Output TCK C11 High Input TDI (6) A11 High Input TDO A12 High Output TEA H13 Low Input TMS (6) B11 High Input TRST (6) C10 Low Input TS J13 Low I/O TSIZ[0-2] A13, D10, B12 High Output TT[0-4] B13, A15, B16, C14, C15 High I/O VDD (2) F6, F8, F9, F11, G7, G10, H4, H6, H8, H9, H11, J6, J8, J9, J11, K7, K10, L6, L8, L9 — Input WT D2 Low I/O 1.8V (7) 2.5V (7) 1.8V 1.8V NOTES: 1. These are test signals for factory use only and must be pulled up to OVdd for normal machine operation. 2. OVdd inputs supply power to the I/O drivers and Vdd inputs supply power to the processor core. 3. To allow future L2 cache I/O interface voltage changes. 4. To allow processor bus I/0 voltage changes, provide the option to connect BVSEL to HRESET (Selects 2.5V Interface) or to GND (Selects 1.8V Interface) or to OVDD (Selects 3.3V Interface). 5. Uses one of 9 existing no-connects in WEDC’s WED3C755A8M-300BX. 6. Internal pull up on die. 7. OVdd supplies power to the processor bus, JTAG, and all control signals except the L2 cache controls (L2CE, L2WE, and L2ZZ); L2OVDD supplies power to the L2 cache I/O interface (L2ADDR (0-18], L2DATA (0-63), L2DP{0-7] and L2SYNC-OUT) and the L2 control signals; L2AVDD supplies power to the SSRAM core memory; and Vdd supplies power to the processor core and the PLL and DLL (after filtering to become AVDD and L2AVDD respectively). These columns serve as a reference for the nominal voltage supported on a given signal as selected by the BVSEL pin configuration and the voltage supplied. For actual recommended value of Vin or supply voltages see Recommended Operating Conditions. 8. Output only for 7410, was I/O for 750/755. 9. Enhanced mode only. 10. Deasserted (pulled high) at HRESET for 60x bus mode. 11. Reuses 750/755 DRTRY, DBIS, and TLBISYNC pins (DTI1, DTI2, and EMODE respectively). 12. Unused output in 60x bus mode. 13. Connect to HRESET to trigger post power-on-reset (por) internal memory test. 14. Ignored in 60x bus mode. White Electronic Designs Corporation • Phoenix AZ • (602) 437-1520 6 3.3V (7) 1.8V White Electronic Designs WED3C7410E16M-400BX ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Value Unit Notes Core supply voltage Vdd -0.3 to 2.1 V (4) PLL supply voltage AVdd -0.3 to 2.1 V (4) L2 DLL supply voltage L2AVDD -0.3 to 2.1 V (4) 60x bus supply voltage OVdd -0.3 to 3.465 V (3) L2 bus supply voltage L2OVdd -0.3 to 2.6 V (3) L2 supply voltage Input supply L2Vdd -0.3 to 4.6 V (5) Processor Bus Vin -0.3 to 0Vdd +0.2 V (2) L2 bus Vin -0.3 to L20Vdd +0.2 V (2) JTAG Signals Vin -0.3 to OVdd +0.2 V (2) Tstg -55 to 150 °C Storage temperature range NOTES: 1. Functional and tested operating conditions are given in Operating Conditions table. Absolute maximum ratings are stress ratings only, and functional operation at the maximums is not guaranteed. Stresses beyond those listed may affect device reliability or cause permanent damage to the device. 2. Caution: Vin must not exceed OVdd by more than 0.2V at any time including during power-on reset. 3. Caution: OVdd/L2OVDD must not exceed Vdd/AVdd/L2AVdd by more than 2.0 V at any time including during power-on reset. 4. Caution: Vdd/AVdd/L2AVDD must not exceed L2OVdd/OVdd by more than 0.4 V at any time including during power-on reset. 5. L2OVdd should never exceed L2Vdd RECOMMENDED OPERATING CONDITIONS Characteristic Core supply voltage PLL supply voltage L2 DLL supply voltage Memory core supply voltage Processor bus supply voltage L2 bus supply voltage Input Voltage Symbol Recommended Value Unit Vdd 1.8v ± 100mV V AVdd 1.8v ± 100mV V L2AVdd 1.8v ± 100mV V L2Vdd 3.3v ± 165mV V BVSEL = 0 OVdd 1.8± 100mV V BVSEL = HRESET OVdd 2.5v ± 100mV V BVSEL = HRESET or BVSEL=1 OVdd 3.3v ± 165 mV V L2VSEL = HRESET or 1 L20Vdd 2.5v ± 100 mV V Processor bus and JTAG Signals Vin GND to OVdd V NOTE: These are the recommended and tested operating conditions. Proper device operation outside of these conditions is not guaranteed 7 White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com White Electronic Designs WED3C7410E16M-400BX POWER CONSUMPTION VDD =AVDD=1.8±0.1V VDC, L2VDD =3.3V ±5% VDC, GND=0 VDC , 0≤ ≤ TJ <105°C Processor (CPU) FFrequency/L2 requency/L2 FFrequency requency 400 MHz/200MHz Full-on Mode Unit Notes Typical 5.7 W 1, 3 Maximum 13.5 W 1, 2 Doze Mode Maximum 5.3 W 1, 2 Nap Mode Maximum 2.25 W 1, 2 Sleep Mode Maximum 2.20 W 1, 2 Sleep Mode–PLL and DLL Disabled Maximum 2.0 W 1, 2 NOTES: 1. These values apply for all valid system bus and L2 bus ratios. The values do not include OVdd; AVdd and L2AVdd suppling power. OVdd power is system dependent, but is typically <10% of Vdd power. Worst case power consumption, for AVdd=15mW and L2AVdd=15mW. 2. Maximum power is measured at Vdd=1.9 V while running an entirely cache-resident, contrived sequence of instructions which keep the execution units maximally busy. 3. Typical power is an average value measured at Vdd=AVdd=L2AVdd=1.8V, OVddd=L2OVdd=2.5V in a system, executing typical applications and benchmark sequences. L2 CACHE CONTROL REGISTER (L2CR) The L2 cache control register, shown in Figure 5, is a supervisor-level, implementation-specific SPR used to configure and operate the L2 cache. It is cleared by hard reset or power-on reset. FIG . 5 L2 CACHE CONTROL R EGISTER (L2CR) L2WT L2PE L2DO L2CTL L2TS L2DF L2SL L2BYP L2FA L2CLKSTP L2HWF L2IO L2DRO L2IP L2E 0 L2SIZ 1 2 3 L2CLK 4 L2RAM 6 7 L21 L2OH 0000000 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 The L2CR bits are described in Table 1. White Electronic Designs Corporation • Phoenix AZ • (602) 437-1520 8 30 31 White Electronic Designs WED3C7410E16M-400BX TABLE 1: L2CR BIT SETTINGS Bit Name Function 0 L2E L2 enable. Enables L2 cache operation (including snooping) starting with the next transaction the L2 cache unit receives. Before enabling the L2 cache, the L2 clock must be configured through L2CR[2CLK], and the L2 DLL must stabilize. All other L2CR bits must be set appropriately. The L2 cache may need to be invalidated globally. 1 L2PE L2 data parity checking enable. Enables parity generation and checking for the L2 data RAM interface. When disabled, generated parity is always zeros. L2 Parity is supported by WEDC’s WED3C7410E16M-400BX, but is dependent on application. 2–3 L2SIZ L2 size—Should be set according to the size of the private memory setting. Total SRAM space is 2M bytes (256Kx72). See L2 cache/private memory configurations table in Motorola User’s Manual. 4–6 L2CLK L2 clock ratio (core-to-L2 frequency divider). Specifies the clock divider ratio based from the core clock frequency that the L2 data RAM interface is to operate at. When these bits are cleared, the L2 clock is stopped and the on-chip DLL for the L2 interface is disabled. For nonzero values, the processor generates the L2 clock and the on-chip DLL is enabled. After the L2 clock ratio is chosen, the DLL must stabilize before the L2 interface can be enabled. The resulting L2 clock frequency cannot be slower than the clock frequency of the 60x bus interface. 000 001 010 011 100 101 110 111 7–8 L2RAM L2 clock and DLL disabled ÷1 ÷ 1.5 ÷ 3.5 ÷ 2 ÷ 2.5 ÷3 ÷4 L2 RAM type—Configures the L2 RAM interface for the type of synchronous SRAMs used: • Pipelined (register-register) synchronous burst SRAMs that clock addresses in and clock data out The 7410 does not burst data into the L2 cache, it generates an address for each access. 10: Pipelined (register-register) synchronous burst SRAM - Setting for WED3C7410E16M-400BX 9 L2DO L2 data only. Setting this bit enablesÚdata-only operation in the L2 cache. When this bit is set, only transactions from the L1 data cache can be cached in the L2 cache. L1 instruction cache operations will be serviced for instruction addresses already in the L2 cache; however, the L2 cache will not be reloaded for L1 instruction cache misses. Note that setting both L2DO and L2IO effectively locks the L2 cache. 10 L2I L2 global invalidate. Setting L2I invalidates the L2 cache globally by clearing the L2 status bits. This bit must not be set while the L2 cache is enabled. See Motorola’s User manual for L2 Invalidation procedure. 11 L2CTL L2 RAM control (ZZ enable). Setting L2CTL enables the automatic operation of the L2ZZ (low-power mode) signal for cache RAMs. Sleep mode is supported by the WED3C7410E16M-400BX WED3C7410E16M-400BX. While L2CTL is asserted, L2ZZ asserts automatically when the device enters nap or sleep mode and negates automatically when the device exits nap or sleep mode. This bit should not be set when the device is in nap mode and snooping is to be performed through deassertion of QACK. 12 L2WT L2 write-through. Setting L2WT selects write-through mode (rather than the default write-back mode) so all writes to the L2 cache also write through to the system bus. For these writes, the L2 cache entry is always marked as clean (value unmodified) rather than dirty (value modified). This bit must never be asserted after the L2 cache has been enabled as previously-modified lines can get remarked as clean (value unmodified) during normal operation. 13 L2TS L2 test support. Setting L2TS causes cache block pushes from the L1 data cache that result from dcbf and dcbst instructions to be written only into the L2 cache and marked valid, rather than being written only to the system bus and marked invalid in the L2 cache dcbf instruction sequence to be used with the L1 cache enabled to easily initialize the L2 cache in case of hit. This bit allows a dcb dcbz/dcbf with any address and data information. This bit also keeps dcbz instructions from being broadcast on the system and single-beat cacheable store misses in the L2 from being written to the system bus. 14–15 L2OH L2 output hold. These bits configure output hold time for address, data, and control signals driven to the L2 data RAMs. 01: 0.8ns Hold Time - Setting for WED3C7410E16M-400BX 9 White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com White Electronic Designs WED3C7410E16M-400BX TABLE 1: L2CR BIT SETTINGS Bit Name Function 16 L2SL L2 DLL slow. Setting L2SL increases the delay of each tap of the DLL delay line. It is intended to increase the delay through the DLL to accommodate slower L2 RAM bus frequencies. 17 L2DF 18 L2BYP 19 L2FA 0: Setting for WED3C7410E16M-400BX because L2 RAM interface is operated above 100 MHz. L2 differential clock. This mode supports the differential clock requirements of late-write SRAMs. 0: Setting for WED3C7410E16M-400BX because late-write SRAMs are not used. L2 DLL bypass is reserved. 0: Setting for WED3C7410E16M-400BX L2 flush assist (for software flush). When this bit is negated, all lines castout from the dL1 which have a state of CDMRSV=01xxx1 (i.e. C-bit negated), will not allocate in the L2 if they miss. Asserting this bit forces every castout from the dL1 to allocate an entry in the L2 if that castout misses in the L2 regardless of the state of the C-bit. The L2FA bit must be set and the L2IO bit must be cleared in order to use the software flush algorithm. 20 L2HWF L2 hardware flush. When the processor detects the value of L2HWF set to 1, the L2 will begin a hardware flush. The flush will be done by starting with low cache indices and increment these indices for way 0 of the cache, one index at a time until the maximum index value is obtained. Then, the index will be cleared to zero and the same process is repeated for way 1 of the cache. For each index and way of the cache, the processor will generate a castout operation to the system bus for all modified 32-byte sectors. At the end of the hardware flush, all lines in the L2 tag will be invalidated. During the flush, all memory activity from the icache and dcache are blocked from accessing the L2 until the flush is complete. Snoops, however, are fully serviced by the L2 during the flush. When the L2 tags have been fully flushed of all valid entries, this bit will be reset to b’0" by hardware. When this bit is cleared, it does not necessarily guarantee that all lines form the L2 have been written completely to the system interface. L2 copybacks can stll be queued in the bus interface unit. Below is the code which must be run to use L2 Hardware Flush. When the final sync completes, all modified lines in the L2 will have been written to the system address bus. Disable interrupts dssall sync set L2HWF sync 21 L2IO L2 Instruction-Only. Setting this bit enales instruction-only operation in the L2 cache. For this operation, only transactions from the L1 instruction cache are allowed to be reloaded in the L2 cache. Data addresses already in the cache will still hit for the L1 data cache. When both L2DO and L2IO are asserted, the L2 cache is effectively locked. 22 L2CLKSTP L2 Clock Stop. Setting this bit enables the automatic stopping of the L2CLK_OUT signals for cache rams that support this function. While L2CLKSTP is set, the L2CLK_OUT signals will automatically be stopped when WED3C7410E16M-400BX enters nap or sleep mode, and automatically restarted when WED3C7410E16M-400BX exits nap or sleep. 23 L2DRO L2 DLL rollover. Setting this bit enables a potential rollover (or actual rollover) condition of the DLL to cause a checkstop for the processor. A potential rollover condition occurs when the DLL is selecting the last tap of the delay line, and thus may risk rolling over to the first tap with one adjustment while in the process of keeping synchronized. Such a condition is improper operation for the DLL, and, while this condition is not expected, it allows detection for added security. This bit can be set when the DLL is first enabled (set with the L2CLK bits) to detect rollover during initial synchronization. It could also be set when the L2 cache is enabled (with L2E bit) after the DLL has achieved its initial lock. 24–30 - Reserved 31 L2IP L2 global invalidate in progress (read only)—See the Motorola user’s manual for L2 Invalidation procedure. White Electronic Designs Corporation • Phoenix AZ • (602) 437-1520 10 White Electronic Designs WED3C7410E16M-400BX PLL POWER SUPPLY FILTERING The AVdd and L2AVdd power signals are provided on The circuit should be placed as close as possible to the the WED3C7410E16M-400BX to provide power to the AVdd pin to minimize noise coupled from nearby clock generation phase-locked loop and L2 cache circuits. An identical but separate circuit should be delay-locked loop respectively. To ensure stability of placed as close as possible to the L2AVdd pin. It is the internal clock, the power supplied to the AVdd often possible to route directly from the capacitors to input signal should be filtered of any noise in the the AVdd pin, which is on the periphery of the 255 BGA 500kHz to 10 MHz resonant frequency range of the footprint, without the inductance of vias. The L2AVdd PLL. A circuit similar to the one shown in Figure 6 pin may be more difficult to route but is proportionately using surface mount capacitors with minimum Effective less critical. Series Inductance (ESL) is recommended. Multiple small capacitors of equal value are recommended over a single large value capacitor. FIG. 6 POWER SUPPLY F ILTER CIRCUIT 10 Ω AVdd (or L2AVdd) Vdd 2.2 µF 2.2 µF Low ESL surface mount capacitors GND 11 White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com White Electronic Designs WED3C7410E16M-400BX PACKAGE DESCRIPTION Package Outline 21x25mm Interconnects 255 (16x16 ball array less one) Pitch 1.27mm Maximum module height 3.90mm Ball diameter 0.8mm PACKAGE DIMENSIONS 255 BALL GRID ARRAY TOP VIEW BOTTOM VIEW T R P N M L K J H G F E D C B A 2.20 (0.087) MAX 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 NOTES: 1. Dimensions in millimeters and paranthetically in inches. 2. A1 corner is designated with a ball missing the array. White Electronic Designs Corporation • Phoenix AZ • (602) 437-1520 12 White Electronic Designs WED3C7410E16M-400BX ORDERING INFORMATION WED 3 C 7410E 16M 400 B X DEVICE GR ADE: GRADE: M = Military Screened -55°C to +125°C I = Industrial -40°C to +85°C C = Commercial 0°C to +70°C PA CK A GE TYPE: CKA B = 255 Ceramic Ball Grid Array CORE FREQUENC Y (MHz) FREQUENCY L2 C A CHE DENSITY CA DENSITY:: 16Mbits = 256K x 72 SSRAM P owerPC : owerPC Type 7410E C = MUL TICHIP PPA A CK A GE MULTICHIP CKA 3 = PPowerPC owerPC owerPC WHITE ELECTRONIC DESIGNS CORP CORP.. PowerPC is a trademark of International Business Machine Corp. 13 White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com