M7020R-083ZA1 查看數據表（PDF） - STMicroelectronics

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M7020R-083ZA1

32K x 68-bit Entry NETWORK SEARCH ENGINE

STMicroelectronics 

M7020R

136-bit Search on Tables Configured as x136 Using Up to Eight M7020R Devices . . . . . . . . 66

Hit/Miss Assumption (Table 35.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Hardware Diagram for a Table with Eight Devices (Figure 44.) . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

x136 Table with Eight Devices (Figure 45.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Timing Diagrams for x136 Using Up to Eight M7020R Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

136-bit SEARCH for Device Number 0 (Figure 46.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

136-bit SEARCH for Device Number 1 (Figure 47.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

136-bit SEARCH for Device Number 7 (Last Device) (Figure 48.) . . . . . . . . . . . . . . . . . . . . . . 71

Latency of SEARCH from Instruction to SRAM Access Cycle, 136-bit, Up to 8 Devices . . . . . . . . 72

Shift of SSF and SSV from SADR (Table 37.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

136-bit Search on Tables Configured as x136 Using Up to 31 M7020R Devices. . . . . . . . . . . 72

Hit/Miss Assumption (Table 38.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Hardware Diagram for a Table with 31 Devices (Figure 49.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Hardware Diagram for a Block of Up to Eight Devices (Figure 50.) . . . . . . . . . . . . . . . . . . . . . . . . 75

x136 Table with 31 Devices (Figure 51.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Timing Diagrams for x136 Using Up to 31 M7020R Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Each Device in Block Number 0 (Miss on Each Device) (Figure 52.) . . . . . . . . . . . . . . . . . . . . 77

Each Device Above the Winning Device in Block Number 1 (Figure 53.) . . . . . . . . . . . . . . . . . 78

Globally Winning Device in Block Number 1 (Figure 54.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Devices Below the Winning Device in Block Number 1 (Figure 55.). . . . . . . . . . . . . . . . . . . . . 80

Devices Above the Winning Device in Block Number 2 (Figure 56.) . . . . . . . . . . . . . . . . . . . . 81

Globally Winning Device in Block Number 2 (Figure 57.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Devices Below the Winning Device in Block Number 2 (Figure 58.). . . . . . . . . . . . . . . . . . . . . 83

Devices Above the Winning Device in Block Number 3 (Figure 59.) . . . . . . . . . . . . . . . . . . . . 84

Globally Winning Device in Block Number 3 (Figure 60.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Devices Below the Winning Device in Block Number 3 (not Device 30 - Last Device) . . . . . . . 86

Device 6 in Block Number 3 (Device 30 in Depth-Cascaded Table) (Figure 62.) . . . . . . . . . . . 87

Latency of SEARCH from Instruction to SRAM Access Cycle, 136-bit, Up to 31 Devices . . . . . . . 88

Shift of SSF and SSV from SADR (Table 40.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

272-bit SEARCH on Tables Configured as x272 Using a Single M7020R Device . . . . . . . . . . 88

Hardware Diagram for a Table with One Device (Figure 63.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Timing Diagram for a 272-bit SEARCH for One Device (Figure 64.). . . . . . . . . . . . . . . . . . . . . . . . 90

x272 Table with One Device (Figure 65.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Latency of SEARCH from Cycles C and D to SRAM Access Cycle, 272-bit, 1 Device . . . . . . . . . . 91

Shift of SSF and SSV from SADR (Table 42.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

272-bit SEARCH on Tables x272-configured Using Up to Eight M7020R Devices . . . . . . . . . 92

Hit/Miss Assumption (Table 43.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Hardware Diagram for a Table with Eight Devices (Figure 66.) . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

x272 Table with Eight Devices (Figure 67.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Timing Diagrams for x272-configured Using Up to Eight M7020R Devices . . . . . . . . . . . . . . . . . . 96

272-bit SEARCH for Device Number 0 (Figure 68.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

272-bit SEARCH for Device Number 1 (Figure 69.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

272-bit SEARCH for Device Number 7 (Last Device) (Figure 70.) . . . . . . . . . . . . . . . . . . . . . . 98

Latency of SEARCH from Cycles C and D to SRAM Access Cycle, 272-bit, Up to 8 Devices . . . . 99

Shift of SSF and SSV from SADR (Table 45.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

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