1CY M74 C4 30 CYM74C430 Intel(R) 82430FX PCIset Level II Cache Module Features Functional Description * Pin-compatible secondary cache module family that ad- This secondary cache module is designed for Intel P54C systems with the 82430FX (Triton) chip set. CYM74C430 is an asynchronous 256-Kbyte cache module that provides a low-cost, high-performance solution using 5V SRAMs with outputs clamped to 3.3V. heres to the Intel(R) COAST 1.2 specification * Asynchronous (CYM74C430) configuration with pres- ence and configuration detect pins * Ideal for Intel P54C-based systems with the 82430FX The CYM74C430 is organized as 32K by 64 data with an 8Kx8 tag that supports 3-2-2-2 reads and 4-2-2-2 writes at 66 MHz.Multiple ground pins and on-board decoupling capacitors ensure high performance with maximum noise immunity. (TritonTM) chipset * Operates at 50, 60, and 66 MHz * Uses cost-effective CMOS asynchronous SRAMs. All components on the cache module are surface mounted on a multi-layer epoxy laminate (FR-4) substrate. All inputs and data outputs are (3.3V) TTL compatible. The contact pins of the module are plated with 150 micro-inches of nickel covered by 30 micro-inches of gold. * 160-position Burndy DIMM CELP2X80SC3Z48 connec- tor * 3.3V compatible inputs/data outputs Logic Block Diagram - CYM74C430 8Kx8 TWE PD4 GND WE CS GND PD3 NC PD2 GND PD1 GND A D CE OE 5V PD0 NC TIO[7:0] ADDRESSLATCH A[17:5] D[7:0] D[15:8] D[23:16] D[31:24] LA[17:5] CALE LE CY7C1199 32K x 8 FCT373C D D CAA[4:3] D D A A A A CE CE CE CE OE CWE0 OE CWE1 OE CWE2 OE CWE3 COE CWE[3:0] D[39:32] D[47:40] D[55:48] D[63:56] 32K x 8 D D CAB[4:3] D D A A A A CE CE CE CE OE CWE4 OE CWE5 OE CWE6 OE CWE7 CWE[7:4] Intel is a registered trademark of Intel Corporation. Cypress Semiconductor Corporation * Triton is a trademark of Intel Corporation. 3901 North First Street * San Jose * CA 95134 * 408-943-2600 November 1995 CYM74C430 Pin Configuration Dual Read-Out SIMM (DIMM) Top View GND TIO1 TIO7 TIO5 TIO3 RSVD VCC RSVD CAA4 GND COE CWE5 CWE7 CWE1 VCC CWE3 CAB3 CALE GND RSVD A4 A6 A8 A10 VCC A17 GND A9 A14 A15 RSVD PD0 PD2 PD4 GND NC GND D63 VCC D61 D59 D57 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 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 29 30 31 32 33 34 35 36 37 38 39 40 41 42 GND TIO0 TIO2 TIO6 TIO4 RSVD NC TWE CAA3 GND CWE4 CWE6 CWE0 CWE2 NC CAB4 NC (GWE) NC (BWE) GND A3 A7 A5 A11 A16 NC A18 GND A12 A13 NC CS NC (ECS2) PD1 PD3 GND NC GND D62 NC D60 D58 D56 GND D55 D53 D51 D49 GND D47 D45 D43 VCC D41 D39 D37 GND D35 D33 D31 VCC D29 D27 D25 GND D23 D21 D19 VCC D17 D15 D13 GND D11 D9 D7 VCC D5 D3 D1 GND 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 GND D54 D52 D50 D48 GND D46 D44 D42 NC D40 D38 D36 GND D34 D32 D30 NC D28 D26 D24 GND D22 D20 D18 NC D16 D14 D12 GND D10 D8 D6 NC D4 D2 D0 GND 2 CYM74C430 Pin Definitions Signal Name Description VCC 5V Supply GND Ground A[18:3] Addresses from processor CAA[4:3] Lower two address bits for bank 0 CAB[4:3] Lower two address bits for bank 1 CS Chip Select COE Output Enable CWE[7:0] Byte Write Enables CALE Latch Enable PD0-PD 4 Presence Detect output pins D[63:0] Data lines from processor TIO[7:0] Tag data bits TWE Tag Write Enable signal NC Signal not connected on module RSVD Reserved Presence Detect Pins MODULE PD4 PD3 PD2 PD1 PD0 CYM74C430 GND NC GND GND NC Selection Guide CYM74C430-50 CYM74C430-60 CYM74C430-65 60 66 Cache Size 256 KB System Clock (MHz) 50 RAM Type Asynchronous 5V with outputs clamped to 3.3V Data RAM tAA 20 ns 17 ns 15 ns Tag RAM tAA 30 ns 20 ns 15 ns 3 CYM74C430 Maximum Ratings DC Input Voltage ........................................... -0.5V to +4.6V (Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ................................. -55C to +125C Output Current into Outputs (LOW)............................. 20 mA Operating Range Ambient Temperature with Power Applied ........................................ -0C to +70C 5V Supply Voltage to Ground Potential....... -0.5V to +5.25V Range Commercial Ambient Temperature VCC 0C to +70C 5V 5% DC Voltage Applied to Outputs in High Z State .............................................. -0.5V to +4.6V Electrical Characteristics Over the Operating Range Parameter Description Test Condition VIH Input HIGH Voltage VIL Input LOW Voltage VOH Output HIGH Voltage VCC=Min. IOH = -4 mA VOL Output LOW Voltage VCC=Min. IOL = 8 mA ICC VCC Operating Supply Current VCC=Max., IOUT=0 mA, f=fMAX=1/tRC Min. Max. Unit 2.2 VCC + 0.3 V -0.5 0.8 V 2.4 V 0.4 V 1600 mA Ordering Information Speed (MHz) Ordering Code Package Name Package Type Description Operating Range 50 CYM74C430PM-50C PM37 160-Pin Dual-Readout SIMM Async 256 KB Commercial 60 CYM74C430PM-60C PM37 160-Pin Dual-Readout SIMM Async 256 KB Commercial 66 CYM74C430PM-66C PM37 160-Pin Dual-Readout SIMM Async 256 KB Commercial Document #: 38-M-00078 Package Diagram 160-Pin Dual-Readout SIMM PM37 (c) Cypress Semiconductor Corporation, 1995. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.