EverDrive-64 X7: Difference between revisions
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Line 36:
|0x8000
|4
|}
The <code>REG_USB_CFG</code> register contains various bits as described below
{| class="wikitable"
|+List of Registers
!Name
!Description
!Bits (15-0)
!Hex Mask
|-
|USB_LE_CFG
|Set to a 1 when reading and writing data
|15
|0x8000
|-
|USB_LE_CTR
|Set to a 1 when reading and writing data
|14
|0x4000
|-
|USB_STA_BSY
|Behavior not known
|13
|0x2000
|-
|USB_STA_PWR
|Set to when 1 when data can be read or written
|12
|0x1000
|-
|USB_STA_TXE
|Set to 0 when data can be written
|11
|0x0800
|-
|USB_CFG_RD/USB_STA_RXF
|Writing a 1 switches the controller to read mode. Writing a 0 switches the controller to write mode.
Reads as a 0 when data is available to be read.
|10
|0x0400
|-
|USB_CFG_ACT/USB_STA_ACT
|Writing a 1 starts reading or writing to REG_USB_DATA. The direction of data is specified by the value of USB_CFG_RD. The amount of data written is specified by baddr.
When reading this bit, a 1 indicates the USB port is busy reading or writing data.
|9
|0x0200
|-
|baddr
|These 5 bits give the address into REG_USB_DAT where USB data is read from and written to. Data is read starting at <code>baddr</code> offset until the end of the REG_USB_DAT buffer. This means the amount of data read is <code>512 - baddr</code>. Because of this, when copying data to and from REG_USB_DAT, you don't always start copying at the beginning of the buffer.
|8..0
|0x01FF
|}
| |||