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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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IXP45X bảng dữ liệu(PDF) 102 Page - Intel Corporation |
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IXP45X bảng dữ liệu(HTML) 102 Page - Intel Corporation |
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102 / 148 page  Intel® IXP45X and Intel® IXP46X Product Line of Network Processors—Datasheet Intel® IXP45X and Intel® IXP46X Product Line of Network Processors Datasheet August 2006 102 Document Number: 306261-004US 4.4 Package Thermal Specifications The thermal parameters defined in Table 27, Table 28, and Table 29 are based on simulated results of packages assembled on standard multi-layer, 2s2p, 1.0-oz copper layer boards in a natural convection environment. The maximum case temperature is based on the maximum junction temperature and defined by the relationship: Tcase max = Tjmax - (ΨJT x Power) Where ΨJT is the junction-to-package top thermal characterization parameter. If the case temperature exceeds the specified Tcase max, thermal enhancements such as heat sinks or forced air will be required. In the tables below, ΘJA is the package junction-to- air thermal resistance. AF1 VSS XXX AF2 VSS XXX AF3 UTP_OP_DATA[0] ETHA_TXDATA[0] X X AF4 UTP_IP_DATA[2] ETHA_RXDATA[2] X X AF5 VSS XXX AF6 UTP_IP_DATA[0] ETHA_RXDATA[0] X X AF7 UTP_OP_CLK ETHA_TXCLK X X AF8 UTP_OP_ADDR[2] X X AF9 UTP_OP_ADDR[0] X X AF10 UTP_IP_CLK ETHA_RXCLK X X AF11 OSC_IN XXX AF12 VCCP XXX AF13 OSC_OUT X X X AF14 UTP_IP_ADDR[2] X X AF15 BYPASS_CLK X X X AF16 PWRON_RESET_N X X X AF17 HIGHZ_N XXX AF18 JTG_TRST_N XXX AF19 VCCP XXX AF20 CTS1_N XXX AF21 VSS XXX AF22 GPIO[11] X X X AF23 GPIO[10] X X X AF24 GPIO[3] XXX AF25 VSS XXX AF26 VSS XXX Table 26. Processors’ Ball Map Assignments (Sheet 26 of 26) Ball Signal Name Processor Number Pin Configurations Intel® IXP465 Intel® IXP460 Intel® IXP455 Note: Interfaces not being utilized at a system level may require external pull-up or pull-down resistors. For specific details and requirements, see Section 4.2, “Functional Signal Definitions” on page 43. Note: Pin Configuration is set by the Expansion bus configuration when Reset is deasserted. Note: Blank field indicates no physical ball on package. |
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