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MPC8280 датащи(PDF) 173 Page - Freescale Semiconductor, Inc |
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MPC8280 датащи(HTML) 173 Page - Freescale Semiconductor, Inc |
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173 / 1386 page ![]() MPC8280 PowerQUICC II Family Reference Manual, Rev. 1 Freescale Semiconductor 4-1 Chapter 4 System Interface Unit (SIU) The system interface unit (SIU) consists of several functions that control system start-up and initialization, as well as operation, protection, and the external system bus. Key features of the SIU include the following: • System configuration and protection • System reset monitoring and generation • Clock synthesizer • Power management • 60x bus interface • Flexible, high-performance memory controller • Level-two cache controller interface • PCI interface • IEEE 1149.1 test-access port (TAP) Figure 4-1 is a block diagram of the SIU. Figure 4-1. SIU Block Diagram 60x Bus (32-Bit Address/64-Bit Data) Memory Controller Core Control Memory Controller Local Control Local Bus (18-Bit Address/32-Bit Data) Bridge G2_LE Core Communications Processor Configuration Registers Counters Interrupt Controller |
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