S5PC110_UM
7 SD/MMC CONTROLLER
7-41
7.9.7 COMMAND REGISTER
7.9.7.1 Command Register
•
CMDREG0, R/W, Address = 0xEB00_000E
•
CMDREG1, R/W, Address = 0xEB10_000E
•
CMDREG2, R/W, Address = 0xEB20_000E
•
CMDREG3, R/W, Address = 0xEB30_000E
This register contains the SD Command Argument.
The Host Driver checks the Command Inhibit (DAT) bit and Command Inhibit (CMD) bit in the Present State
register before writing to this register. Writing to the upper byte of this register triggers SD command generation.
The Host Driver is responsible to write this register because the Host Controller does not protect the writing if
Command Inhibit (CMD) is set.
CMDREG
Bit
Description
Initial State
Reserved [15:14]
Reserved
CMDIDX [13:8]
Command
Index
These bits are set to the command number (CMD0-63, ACMD0-63)
that is specified in bits 45-40 of the Command-Format in the SD
Memory Card Physical Layer Specification and SDIO Card
Specification.
CMDTYP [7:6]
Command
Type
There are three types of special commands: Suspend, Resume and
Abort.
These bits are set to 00b for all other commands.
•
Suspend Command
If the Suspend command succeeds, the Host Controller assumes
that the SD Bus has been released and it is possible to issue the
next command, which uses the DAT line. The Host Controller de-
asserts Read Wait for read transactions and stops checking busy for
write transactions. The interrupt cycle starts, in 4-bit mode. If the
Suspend command fails, the Host Controller maintains its current
state, and the Host Driver restarts the transfer by setting Continue
Request in the Block Gap Control register.
•
Resume Command
The Host Driver re-starts the data transfer by restoring the registers
in the range of 000-00Dh (Refer to Suspend and Resume
mechanism). The Host Controller checks for busy before starting
write transfers.
•
Abort Command
If this command is set when executing a read transfer, the Host
Controller stops reads to the buffer. If this command is set while
executing a write transfer, the Host Controller stops driving the DAT
line. After issuing the Abort command, the Host Driver must issue a
software reset (Refer to Abort Transaction (5)).
11b = Abort CMD12, CMD52 for writing "I/O Abort" in CCCR
10b = Resume CMD52 for writing "Function Select" in CCCR
Summary of Contents for S5PC110
Page 4: ...Section 1 OVERVIEW ...
Page 28: ...Section 2 SYSTEM ...
Page 374: ...S5PC110_UM 4 POWER MANAGEMENT 4 14 4 Let DRAMs exit from self refresh mode ...
Page 473: ...S5PC110_UM 6 BOOTING SEQUENCE 6 10 Figure 6 3 Secure Booting Diagram ...
Page 474: ...Section 3 BUS ...
Page 491: ...S5PC110_UM 2 CORESIGHT Figure 2 4 Structure of the Coresight DAP Components 2 8 ...
Page 506: ...Section 4 INTERRUPT ...
Page 537: ...Section 5 MEMORY ...
Page 540: ......
Page 703: ...Section 6 DMA ...
Page 705: ...List of Figures Figure Title Page Number Number Figure 1 1 Two DMA Tops 1 1 ...
Page 737: ...Section 7 TIMER ...
Page 795: ...Section 8 CONNECTIVITY STORAGE ...
Page 883: ...S5PC110_UM 5 USB2 0 HS OTG 5 7 5 6 3 OTG FIFO ADDRESS MAPPING Figure 5 3 OTG FIFO Mapping ...
Page 1100: ...Section 9 MULTIMEDIA ...
Page 1116: ...S5PC110_UM 1 0BDISPLAY CONTROLLER 1 5 Figure 1 2 Block Diagram of the Data Flow ...
Page 1125: ...S5PC110_UM 1 0BDISPLAY CONTROLLER 1 14 1 3 3 2 7 16BPP Display 1555 P1 P2 P3 P4 P5 LCD Panel ...
Page 1145: ...S5PC110_UM 1 0BDISPLAY CONTROLLER 1 34 Figure 1 10 Blending Decision Diagram ...
Page 1149: ...S5PC110_UM 1 0BDISPLAY CONTROLLER 1 38 Figure 1 14 Hue Control Block Diagram ...
Page 1184: ...S5PC110_UM 1 0BDISPLAY CONTROLLER 1 73 ...
Page 1226: ...S5PC110_UM 1 0BDISPLAY CONTROLLER 1 115 ...
Page 1328: ...S5PC110_UM 2 1BCAMERA INTERFACE 2 81 ...
Page 1369: ...S5PC110_UM 4 3BMIPI CSIS 4 2 4 2 BLOCK DIAGRAM Figure 4 1 MIPI CSI System Block Diagram ...
Page 1381: ...S5PC110_UM 4 3BMIPI CSIS 4 14 ...
Page 1431: ...S5PC110_UM 6 5BMULTI FORMAT CODEC 6 39 ...
Page 1471: ...S5PC110_UM 6 5BMULTI FORMAT CODEC 6 79 Figure 6 7 VC1 Parameters ...
Page 1626: ...S5PC110_UM 10 9BHIGH DEFINITION MULTIMEDIA INTERFACE 10 17 Figure 10 10 Channel Status Block ...
Page 1775: ...S5PC110_UM 13 12BG2D 13 6 FIMG 2D FIMG 2D FIMG 2D Figure 13 3 Rotation and Flip Example ...
Page 1798: ...Section 10 AUDIO ETC ...
Page 1803: ...S5PC110_UM 1 AUDIO SUBSYSTEM 1 2 Figure 8 7 Keypad I F Block Diagram 8 8 ...
Page 1951: ...Section 11 SECURITY ...
Page 1954: ...List of Tables Table Title Page Number Number Table 1 1 Security Features of S5PC110 1 2 ...
Page 1964: ...S5PC110_UM 2 ADVANCED CRYPTO ENGINE Figure 2 9 DES Byte Swapping Scheme 2 9 ...
Page 2005: ...Section 12 ETC ...
Page 2039: ...Section 13 SIZE BALL MAP ...