Fast Models Reference Manual - ARM Information Center

Peripheral and Interface Components
Table 5-62 PL180_MCI registers (continued)
Register name Offset Access Description
MCISelect 0x044 read/write Secure Digital card select
register
MCIFifoCnt 0x048 read only FIFO counter
MCIFIFO 0x080 read/write data FIFO register
MCIPeriphID0 0xFE0 read only Peripheral ID bits 7:0
MCIPeriphID1 0xFE4 read only Peripheral ID bits 15:8
MCIPeriphID2 0xFE8 read only Peripheral ID bits 23:16
MCIPeriphID3 0xFEC read only Peripheral ID bits 31:24
MCIPCellID0 0xFF0 read only PrimeCell ID bits 7:0
MCIPCellID1 0xFF4 read only PrimeCell ID bits 15:8
MCIPCellID2 0xFF8 read only PrimeCell ID bits 23:16
MCIPCellID3 0xFFC read only PrimeCell ID bits 31:24
Debug features
At compile time, command tracing can be enabled within the PL180_MCI component by
modifying the PL180_TRACE macro in the MMC.lisa file. This sends command and event trace to
standard output. You can use this output to help diagnose device driver and controller-to-card
protocol issues.
Verification and testing
The PL180_MCI component has been tested in conjunction with the ARM MMC reference
model. The component has been tested in the VE example with Boot Monitor and Linux drivers.
Performance
The PL180_MCI component is not expected to significantly affect the performance of a PV
system.
Library dependencies
The PL180_MCI component has no dependencies on external libraries.
5.4.19 MMC component
The MMC component models a MultiMedia Card (MMC) device. The MMC component
implementation is a simple MMC, compatible with MMCA specification version 3.31. The
MMC component is provided as source code, allowing you to extend functionality if required.
Further information about the MMC device can be obtained from the MultiMedia Card
Association, www.mmca.org.
When paired with a PL180_MCI component, the MMC device model provides emulation of a
flexible, persistent storage mechanism. The MMC component uses a file on the host PC to
simulate the storage device. The size of this backing store file determines the reported size of
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