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MPC859DSL Datasheet(PDF) 2 Page - Freescale Semiconductor, Inc |
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MPC859DSL Datasheet(HTML) 2 Page - Freescale Semiconductor, Inc |
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2 / 96 page  MPC866/MPC859 Hardware Specifications, Rev. 2 2 Freescale Semiconductor Features Table 1 shows the functionality supported by the members of the MPC866/859 family. 2Features The following list summarizes the key MPC866/859 features: • Embedded single-issue, 32-bit PowerPC™ core (implementing the PowerPC architecture) with thirty-two 32-bit general-purpose registers (GPRs) — The core performs branch prediction with conditional prefetch, without conditional execution — 4- or 8-Kbyte data cache and 4- or 16-Kbyte instruction cache (see Table 1) – 16-Kbyte instruction cache (MPC866P and MPC859P) is four-way, set-associative with 256 sets; 4-Kbyte instruction cache (MPC866T, MPC859T, and MPC859DSL) is two-way, set-associative with 128 sets. – 8-Kbyte data cache (MPC866P and MPC859P) is two-way, set-associative with 256 sets; 4-Kbyte data cache(MPC866T, MPC859T, and MPC859DSL) is two-way, set-associative with 128 sets. – Cache coherency for both instruction and data caches is maintained on 128-bit (4-word) cache blocks – Caches are physically addressed, implement a least recently used (LRU) replacement algorithm, and are lockable on a cache block basis. — MMUs with 32-entry TLB, fully associative instruction and data TLBs — MMUs support multiple page sizes of 4, 16, and 512 Kbytes, and 8 Mbytes; 16 virtual address spaces and 16 protection groups. — Advanced on-chip-emulation debug mode • The MPC866/859 provides enhanced ATM functionality over that of the MPC860SAR. The MPC866/859 adds major new features available in 'enhanced SAR' (ESAR) mode, including the following: — Improved operation, administration, and maintenance (OAM) support — OAM performance monitoring (PM) support — Multiple APC priority levels available to support a range of traffic pace requirements Table 1. MPC866 Family Functionality Part Cache Ethernet SCC SMC Instruction Data 10T 10/100 MPC866P 16 Kbytes 8 Kbytes Up to 4 1 4 2 MPC866T 4 Kbytes 4 Kbytes Up to 4 1 4 2 MPC859P 16 Kbytes 8 Kbytes 1112 MPC859T 4 Kbytes 4 Kbytes 1112 MPC859DSL 4 Kbytes 4 Kbytes 1 1 1 1 1 On the MPC859DSL, the SCC (SCC1) is for ethernet only. Also, the MPC859DSL does not support the Time Slot Assigner (TSA). 1 2 2 On the MPC859DSL, the SMC (SMC1) is for UART only. MPC852T 3 3 For more details on the MPC852T, please refer to the MPC852T Hardware Specifications. 4 KBytes 4 Kbytes 2121 |
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