FW82801EB Intel, FW82801EB Datasheet - Page 228

• Manufacturer Part Number: FW82801EB
• Manufacturer: Intel

Specifications of FW82801EB

• Lead Free Status / RoHS Status: Not Compliant

Functional Description
5.20.10.1.1
228
OUT Transactions
An Out transaction sends data to the debug device. It can occur only when the following are true:
The sequence of the transaction is:
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 sends a data packet consisting of:
4. After sending the data packet, the controller waits for a handshake response from the debug
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The debug port is enabled
The debug software sets the GO_CNT bit
The WRITE_READ#_CNT bit is set
device.
If a handshake is received, the debug port controller:
If no handshake PID is received, the debug port controller:
— USB_ADDRESS_CNF
— USB_ENDPOINT_CNF
— DATA_BUFFER[63:0]
— TOKEN_PID_CNT[7:0]
— SEND_PID_CNT[15:8]
— 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
— SYNC
— SEND_PID_CNT field
— The number of data bytes indicated in DATA_LEN_CNT from the DATA_BUFFER
— 16-bit CRC
— a. Places the received PID in the RECEIVED_PID_STS field
— b. Resets the ERROR_GOOD#_STS bit
— c. Sets the DONE_STS bit
— a. Sets the EXCEPTION_STS field to 001b
— b. Sets the ERROR_GOOD#_STS bit
— c. Sets the DONE_STS bit
NOTE: A DATA_LEN_CNT value of 0 is valid in which case no data bytes would be
included in the packet.
(note: this will always be 1 for OUT transactions)
(note: this will always be 1 to initiate the transaction)
Intel
®
82801EB ICH5 / 82801ER ICH5R Datasheet