S5PC110_UM
7 SD/MMC CONTROLLER
7-22
7.7 ADMA (ADVANCED DMA)
In the SD Host Controller Standard Specification Version 2.00, new DMA transfer algorithm called ADMA
(Advanced DMA) is defined. The DMA algorithm defined in the SD Host Controller Standard Specification Version
1.00 is called SDMA (Single Operation DMA). SDMA had disadvantage that DMA Interrupt generated at every
page boundary disturbs CPU to reprogram the new system address. This SDMA algorithm forms a performance
bottleneck by interruption at every page boundary. ADMA adopts scatter gather DMA algorithm so that higher data
transfer speed is available. The Host Driver can program a list of data transfers between system memory and SD
card to the Descriptor Table before executing ADMA. It enables ADMA to operate without interrupting the Host
Driver. Furthermore, ADMA can support not only 32-bit system memory addressing but also 64-bit system
memory addressing. The 32-bit system memory addressing uses lower 32-bit field of 64-bit address registers.
Support of SDMA and ADMA are optional for the Host Controller. ADMA improves the restriction so that data of
any location and any size can be transferred in system memory. The format of Descriptor Table is different
between them. The Host Controller Specification Ver2.00 defines ADMA as standard ADMA.
7.7.1 BLOCK DIAGRAM OF ADMA
Figure 7-13 Block Diagram of ADMA
shows block diagram of ADMA. The Descriptor Table is created in system memory by the Host Driver.
32-bit Address Descriptor Table is used for the system with 32-bit addressing and 64-bit Address Descriptor Table
is used for the system with 64-bit addressing. Each descriptor line (one executable unit) consists of address,
length and attribute field. The attribute specifies operation of the descriptor line. ADMA includes SDMA, State
Machine and Registers circuits. ADMA does not use 32-bit SDMA System Address Register (offset 0) but uses the
64-bit Advanced DMA System Address register (offset 058h) for descriptor pointer. Writing Command register
triggers off ADMA transfer. ADMA fetches one descriptor line and execute. This procedure is repeated until end of
descriptor is found (End=1 in attribute).
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 ...