Artesyn MVME55006E Single Board Computer Installation and Use (July 2014) - Manual (Page 50)

Functional Description
MVME55006E Single Board Computer Installation and Use (6806800A37J) 50
2.6 System Controller
The GT-64260B system controller for PowerPC architecture processors is a single chip solution
that provides the following features:
 A 64-bit interface to the CPU bus
 A 64-bit SDRAM interface
 A 32-bit generic device interface for Flash, etc.
 Two 64-bit, 66 MHz PCI bus interfaces
 Three 10/100Mb Ethernet MAC ports (two ports not used)
 A DMA engine for moving data between the buses
 An interrupt controller
 An I2C device controller
 PowerPC bus arbiter
 Counter/timers
 Watchdog timer
Each of the device buses are de-coupled from each other, enabling concurrent operation of the
CPU bus, PCI buses and access to SDRAM. Refer to the GT-64260B System Controller for PowerPC
Processors Data Sheet, listed in
Appendix C, Related Documentation , for more details.
2.6.1 CPU Bus Interface
The GT-64260B supports MPX or 60x bus mode operation. The MVME5500 board has
jumper/build option resistors to select either operating mode at power-up.
2.6.2 Memory Controller Interface
The GT-64260B can access up to four banks of SDRAM for a total of 1GB of SDRAM memory.
The memory bus is capable of operating up to 133 MHz.
The MVME5500 board has two banks on board and a connector for an expansion mezzanine
board with two additional banks.