Motorola CPCI-6115 - Manual (Page 74)

CPCI-6115 CompactPCI Single Board Computer Installation and Use (6806800A68D)
Functional Description MV64360 System Controller
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4.3.4.3 MV64360 32-bit Interface to Devices
The device controller supports up to five banks of devices, of which three are used for Flash
Bank A and B, NVRAM/RTC, and serial ports on the CPCI-6115. Each bank supports up to 512
MB of address space, resulting in total device space of 1.5 GB. Each bank has its own
parameters register as shown in the following table.
4.3.4.4 MV64360 Dual PCI/PCI-X Interfaces
The MV64360 supports two PCI/PCI-X busses capable of operating up to 133 MHz in PCI-X
mode, and up to 66 MHz in conventional PCI mode, subject to routing and loading
considerations.
On the CPCI-6115, PCI Bus 0.0 is connected to PMC 2 and supports 32/64-bit transfers at
66/133 MHz PCI-X or 33/66 MHz PCI.
On the CPCI-6115, PCI Bus 1.0 is connected to PMC 1, the 21555 PCI-to-PCI bridge and the
IDE controller. The upper 32 bits of PCI Bus 1.0 on the MV64360 are multiplexed with the third
Gigabit Ethernet port (which may be routed to the front panel on the CPCI-6115), so PCI Bus
1.0 is only 32 bits wide when the third Gigabit Ethernet port is populated.
The IDE controller is a 33 MHz-only PCI device, so PCI Bus 1.0 is limited to 33 MHz PCI
transfers when the IDE controller is populated.
The MV64360 PCI interfaces are fully PCI Rev. 2.2 and PCI-X compliant. The MV64360
contains all the required PCI configuration registers. All internal registers, including the PCI
configuration registers, are accessible from the CPU bus or the PCI bus.
4.3.4.5 MV64360 Integrated Gigabit Ethernet MACs
The CPCI-6115 supports two 10/100/1000Base-T full duplex Ethernet ports connected to the
J3 connector for support of PICMG 2.16 I/O. The CPCI-6115 also routes the third Gigabit
Ethernet port to an RJ-45 connector on the front panel. The CPCI-6115 supports ports
configured to the 10/100 megabits/s MII interface and the 1 Gbps GMII interface. Receive and
transmit buffer management is based on buffer-descriptor linked list. Descriptors and data
transfers are performed by the port dedicated SDMA. Each board is assigned two Ethernet
Station Addresses.
The MV64360 does not integrate a Physical Layer for the Ethernet interfaces, so external PHYs
are required. On the CPCI-6115, the PHY device is a BroadCom BCM5421S
10/100/1000Base-T Gigabit Transceiver with SERDES Interface. This device was chosen for its
small footprint (8mm x 14mm) and low power (1 watt).
Table 4-1 Device Bus Parameters
Device Device ID Parameter Description
Flash Bank A Device Bus Bank 0 Bank width 32-bit, parity disabled
Flash Bank B Device Bus Boot Bank Bank width 32-bit, parity disabled
Real Time Clock
Board Specific Register
Serial Ports Device Bus Bank 1 Bank width 8-bit, parity disabled