Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
ID | Date | Version | Classification |
---|---|---|---|
615146 | 08/09/2019 | 1.2 | Public |
Transfer Mode (transfermode) – Offset c
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
14:6 | - | - | Reserved
|
5 | 0h | RW | Multi / Single Block Select (xfermode_multiblksel) This bit enables multiple block data transfers. |
4 | 0h | RW | Data Transfer Direction Select (xfermode_dataxferdir) This bit defines the direction of data transfers.0 - Write (Host to Device) |
3:2 | 0h | RW | Auto CMD Enable (xfermode_autocmdena) This field determines use of auto command functions. |
1 | 0h | RW | Block Count Enable (xfermode_blkcntena) This bit is used to enable the Block count register, which is only relevant for multiple block transfers. When this bit is 0, the Block Count register is disabled, which is usefulin executing an infinite transfer. |
0 | 0h | RW | DMA Enable (xfermode_dmaenable) DMA can be enabled only if DMA Support bit in theCapabilities register is set. If this bit is set to 1, a DMA operation shall begin when the HD writes to the upper byte of Command register (00Fh). |