OM11077 NXP Semiconductors, OM11077 Datasheet - Page 567

• Manufacturer Part Number: OM11077
• Description: MODULE DIMM LPC2478 ARM7
• Manufacturer: NXP Semiconductors

Specifications of OM11077

• Accessory Type: Module Card
• For Use With/related Products: ARM-57TS-LPC2478
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-4742

NXP Semiconductors
UM10237_4
User manual
6.7 Data Timer Register (MCIDataTimer - 0xE008 C024)
6.8 Data Length Register (MCIDataLength - 0xE008 C028)
Table 497: Response registers (MCIResponse0-3 - addresses 0xE008 0014, 0xE008 C018,
The card status size can be 32 or 127 bits, depending on the response type (see
Table
Table 498: Response Register Type
The most significant bit of the card status is received first. The MCIResponse3 register
LSBit is always 0.
The MCIDataTimer register contains the data timeout period, in card bus clock periods.
Table 21–499
Table 499: Data Timer register (MCIDataTimer - address 0xE008 C024) bit description
A counter loads the value from the data timer register, and starts decrementing when the
Data Path State Machine (DPSM) enters the WAIT_R or BUSY state. If the timer reaches
0 while the DPSM is in either of these states, the timeout status flag is set.
A data transfer must be written to the data timer register and the data length register
before being written to the data control register.
The MCIDataLength register contains the number of data bytes to be transferred. The
value is loaded into the data counter when data transfer starts.
bit assignment of the MCIDataLength register.
Table 500: Data Length register (MCIDataLength - address 0xE008 C028) bit description
For a block data transfer, the value in the data length register must be a multiple of the
block size (see
To initiate a data transfer, write to the data timer register and the data length register
before writing to the data control register.
Bit
31:0 Status
Description
MCIResponse0
MCIResponse1
MCIResponse2
MCIResponse3
Bit
31:0
Bit
15:0
31:16
21–498).
Symbol
Symbol
DataTime
Symbol
DataLength
-
0xE008 001C and 0xE008 C020) bit description
shows the bit assignment of the MCIDataTimer register.
Description
Card status
Section 21–6.9 “Data Control Register (MCIDataCtrl - 0xE008
Description
Data timeout period.
Description
Data length value
Reserved, user software should not write ones to reserved bits.
The value read from a reserved bit is not defined.
Rev. 04 — 26 August 2009
Short Response
Card status [31:0]
Unused
Unused
Unused
Chapter 21: LPC24XX SD/MMC card interface
Card status [127:96]
Card status [95:64]
Card status [63:32]
Card status [31:1]
Long Response
Table 21–500
UM10237
© NXP B.V. 2009. All rights reserved.
Reset Value
0x0000 0000
Reset Value
0x0000 0000
shows the
C02C)”).
Reset
Value
0x0000
NA
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