FW82801BA S L5PN Intel, FW82801BA S L5PN Datasheet - Page 229
FW82801BA S L5PN
Manufacturer Part Number
FW82801BA S L5PN
Description
Manufacturer
Intel
Datasheet
1.FW82801BA_S_L5PN.pdf
(671 pages)
Specifications of FW82801BA S L5PN
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5.20.10.1.2
Intel
®
82801EB ICH5 / 82801ER ICH5R Datasheet
An IN transaction receives data from the debug device. It can occur only when the following are
true:
The sequence of the transaction is:
IN Transactions
1. Software sets the appropriate values in the following bits:
2. The debug port controller sends a token packet consisting of:
3. After sending the token packet, the debug port controller waits for a response from the debug
4. If valid packet was received from the device that was one byte in length (indicating it was a
5. If valid packet was received from the device that was more than one byte in length (indicating
6. If no valid packet is received, then the debug port controller:
•
•
•
The debug port is enabled
The debug software sets the GO_CNT bit
The WRITE_READ#_CNT bit is reset
device.
If a response is received:
handshake packet), then the debug port controller:
it was a data packet), then the debug port controller:
— USB_ADDRESS_CNF
— USB_ENDPOINT_CNF
— TOKEN_PID_CNT[7:0]
— DATA_LEN_CNT
— WRITE_READ#_CNT
— GO_CNT
— SYNC
— TOKEN_PID_CNT field
— USB_ADDRESS_CNT field
— USB_ENDPOINT_CNT field
— 5-bit CRC field.
— The received PID is placed into the RECEIVED_PID_STS field
— Any subsequent bytes are placed into the DATA_BUFFER
— The DATA_LEN_CNT field is updated to show the number of bytes that were received
— Resets the ERROR_GOOD#_STS bit
— Sets the DONE_STS bit
— Transmits an ACK handshake packet
— Resets the ERROR_GOOD#_STS bit
— Sets the DONE_STS bit
— Sets the EXCEPTION_STS field to 001b
— Sets the ERROR_GOOD#_STS bit
— Sets the DONE_STS bit.
after the PID.
(note: this will always be 0 for IN transactions)
(note: this will always be 1 to initiate the transaction)
Functional Description
229
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