CARD_DETECT_TEST_LVL=Val_0x0, CARD_DETECT_SIG_SEL=Val_0x0, EXT_DAT_XFER=Val_0x0, LED_CTRL=Val_0x0, DAT_XFER_WIDTH=Val_0x0
Host Control 1 Register
| LED_CTRL | LED Control. This bit is used to caution not to remove the card while the SD card is being accessed. The value is reflected on the led control signal. 0 (Val_0x0): LED off 1 (Val_0x1): LED on |
| DAT_XFER_WIDTH | Data Transfer Width. For both SD or eMMC modes, this bit selects the data transfer width of the Host Controller. The Host Driver sets it to match the data width of the SD or eMMC card. 0 (Val_0x0): 1-bit mode 1 (Val_0x1): 4-bit mode |
| DMA_SEL | DMA Select. This field is used to select the DMA type. When the SDMMC_HOST_CTRL2_R[HOST_VER4_ENABLE] bit is set to 0x1: 0x0: SDMA is selected 0x1: Reserved 0x2: ADMA2 is selected 0x3: ADMA2 or ADMA3 is selected When the SDMMC_HOST_CTRL2_R[HOST_VER4_ENABLE] bit is set to 0x0: 0x0: SDMA is selected 0x1: Reserved 0x2: 32-bit Address ADMA2 is selected 0x3: 64-bit Address ADMA2 is selected |
| EXT_DAT_XFER | Extended Data Transfer Width. This bit controls 8-bit bus width mode of embedded device. 0 (Val_0x0): Bus width is selected by the SDMMC_HOST_CTRL1_R [DAT_XFER_WIDTH] bit 1 (Val_0x1): 8-bit bus width |
| CARD_DETECT_TEST_LVL | Card Detect Test Level. This bit is enabled while the SDMMC_HOST_CTRL1_R[CARD_DETECT_SIG_SEL] bit is set to 0x1 and it indicates whether a card inserted or not. 0 (Val_0x0): No card 1 (Val_0x1): Card inserted |
| CARD_DETECT_SIG_SEL | Card Detect Signal Selection. This bit selects a source for card detection. When the source for the card detection is switched, the interrupt must be disabled during the switching period. 0 (Val_0x0): Card detect signal is selected (for normal use) 1 (Val_0x1): Card detect test level is selected (for test purpose) |