PowerQUICC® II Processor with 256-ch. HDLC, UTOPIA II, 10/100 Ethernet

MPC8260
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The MPC8260 PowerQUICC® II™ is an advanced integrated communications processor designed for the telecommunications and networking markets.

The MPC8260 now offers floating point support.

The MPC8260 PowerQUICC II can best be described as the next generation MPC860 PowerQUICC®, providing higher performance in all areas of device operation, including greater flexibility, extended capabilities, and higher integration.

Like the MPC860, the MPC8260 integrates two main components, the embedded G2 core and the Communications Processor Module (CPM). This dual-processor architecture consumes less power than traditional architectures because the CPM offloads peripheral tasks from the embedded G2 core. The CPM simultaneously supports three fast serial communications controllers (FCCs), two multichannel controllers (MCCs), four serial communications controllers (SCCs), two serial management controllers (SMCs), one serial peripheral interface (SPI) and one I²C interface. The combination of the G2 core and the CPM, along with the versatility and performance of the MPC8260, provides customers with enormous potential in developing networking and communications products while significantly reducing time-to-market development stages.

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ブロック図

MPC8260_BLKDIAG

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Features

  • 190 MIPS at 100 MHz (Dhrystone 2.1)
  • 505 MIPS at 266 MHz (Dhrystone 2.1)
  • 570 MIPS at 300 MHz (Dhrystone 2.1)
  • High-performance, superscalar microprocessor
  • Disable CPU mode
  • Supports the NXP® external L2 cache chip (MPC2605)
  • Improved low-power core
  • 16 Kbyte data and 16 Kbyte instruction cache, four-way set associative
  • Memory Management Unit
  • Floating point unit enabled
  • Common on-chip processor (COP)
  • System Integration Unit (SIU)
    • Memory Controller, including two dedicated SDRAM machines
    • PCI up to 66 MHz (available in subsequent versions)
    • Hardware bus monitor and software watchdog timer
    • IEEE 1149.1 JTAG test access port
  • High-Performance Communications Processor Module (CPM) with operating frequency up to 133, 166, or 200 MHz
    • G2 core and CPM may run at different frequencies
    • Parallel I/0 Registers
    • On-board 32 KBytes of dual-port RAM
    • Two multi-channel controllers (MCCs) each supporting 128 full-duplex, 64 Kbps, HDLC lines
    • Virtual DMA Functionality
  • Three FCCs supporting:
    • Up to 155 Mbps ATM SAR (maximum of two) (AAL0, AAL1, AAL2, AAL5)
    • 10/100 Mbps Ethernet (up to three) (IEEE 802.3X with Flow Control)
    • 45 Mbps HDLC/Transparent (up to three)
  • Two bus architectures: one 64-bit 60x bus and one 32-bit PCI or local bus
  • Two UTOPIA level-2 leader/follower ports, both with multi-PHY support.
  • Three MII Interfaces
  • Eight TDM interfaces (T1/E1), two TDM ports can be glueless to T3/E3
  • 1.8V or 2.0V internal and 3.3V I/O
  • 300 MHz power consumption: 2.5 W
  • 480 TBGA package (37.5 mm x 37.5 mm)

比較表

MPC8260 Derivatives

8250 8255 8260 8264 8265 8266
IMA Functionality - - - Yes - Yes
UTOPIA II Ports 0 2 2 2 2 2
PCI Interface Yes - - - Yes yes
Multi-Channel HDLC Up to 128 Up to 128 Up to 256 Up to 256 Up to 256 Up to 256
I-Cache (Kbyte) 16 16 16 16 16 16
Fast Communication Controllers (FCCs) 3 2 3 3 3 3
Serial Communications Controllers (SCCs) 4 4 4 4 4 4
D-Cache (Kbyte) 16 16 16 16 16 16
Ethernet (10/100) Up to 3 Up to 2 Up to 3 Up to 3 Up to 3 Up to 3
Ethernet (10T) Up to 4 Up to 4 Up to 4 Up to 4 Up to 4 Up to 4

PowerQUICC II Masks and Versions

IMMR_ [16-31]¹ Rev_Num² Qualification Revision Process Mask
MPC8260 Family XC A.1
B.3
C.2		 0.29 µm
(HiP3)		 0K26N
3K23A
6K23A, 7K23A
MPC8260 Family XC
MC
MC		 A.0
B.1
C.0		 0.25 µm
(HiP4)		 2K25A
4K25A
5K25A
MPC8280 Family -
MC
MC		 0
0.1
A.0		 0.13 µm
(HiP7)		 0K49M
1K49M
2K49M, 3K49M
MPC8272 Family PC
MC		 0
A.0		 0.13 µm
(HiP7)		 0K50M
1K50M

Notes:
1. The IMMR[16-31] indicates the mask number.
2. The Rev_Num located at offset 0x8AF0 in DPRAM indicates the CPM microcode revision number.
3 . Encryption Enabled.
4 . Encryption Disabled.

Masks and versions table last updated on 14OCT2004.

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