FW82801ER S L742 Intel, FW82801ER S L742 Datasheet - Page 514
FW82801ER S L742
Manufacturer Part Number
FW82801ER S L742
Description
Manufacturer
Intel
Datasheet
1.FW82801ER_S_L742.pdf
(671 pages)
Specifications of FW82801ER S L742
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EHCI Controller Registers (D29:F7)
13.2.15
13.2.16
13.2.17
514
USBPID—USB PIDs Register
Offset:
Default Value:
This DWord register is used to communicate PID information between the USB debug driver and
the USB debug port. The debug port uses some of these fields to generate USB packets, and uses
other fields to return PID information to the USB debug driver.
DATABUF[7:0]—Data Buffer Bytes[7:0] Register
Offset:
Default Value:
This register can be accessed as eight, separate 8-bit registers or two, separate 32-bit register.
CONFIG—Configuration Register
Offset:
Default Value:
31:24
23:16
31:15
15:8
63:0
14:8
Bit
7:0
Bit
Bit
7:4
3:0
Reserved: These bits will return 0 when read. Writes will have no effect.
RECEIVED_PID_STS[23:16] — RO. Hardware updates this field with the received PID for
transactions in either direction. When the controller is writing data, this field is updated with the
handshake PID that is received from the device. When the host controller is reading data, this field
is updated with the data packet PID (if the device sent data), or the handshake PID (if the device
NAKs the request). This field is valid when the hardware clears the GO_DONE#_CNT bit.
SEND_PID_CNT[15:8] — R/W. Hardware sends this PID to begin the data packet when sending
data to USB (i.e., WRITE_READ#_CNT is asserted). Software typically sets this field to either
DATA0 or DATA1 PID values.
TOKEN_PID_CNT[7:0] — R/W. Hardware sends this PID as the Token PID for each USB
transaction. Software typically sets this field to either IN, OUT, or SETUP PID values.
DATABUFFER[63:0] — R/W. This field is the 8 bytes of the data buffer. Bits 7:0 correspond to least
significant byte (byte 0). Bits 63:56 correspond to the most significant byte (byte 7).
The bytes in the Data Buffer must be written with data before software initiates a write request. For
a read request, the Data Buffer contains valid data when DONE_STS bit is cleared by the
hardware, ERROR_GOOD#_STS is cleared by the hardware, and the DATA_LENGTH_CNT field
indicates the number of bytes that are valid.
Reserved
USB_ADDRESS_CNF — R/W. This 7-bit field identifies the USB device address used by the
controller for all Token PID generation. (Default = 7Fh)
Reserved
USB_ENDPOINT_CNF — R/W. This 4-bit field identifies the endpoint used by the controller for all
Token PID generation. (Default = 01h)
A4h
0000h
A8–AFh
0000000000000000h
B0–B3h
00007F01h
Intel
Description
Description
Description
Attribute:
Size:
Attribute:
Size:
Attribute:
Size:
®
82801EB ICH5 / 82801ER ICH5R Datasheet
RW, RO
32 bits
R/W
64 bits
R/W
32 bits
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