NHE6300ESB S L7XJ Intel, NHE6300ESB S L7XJ Datasheet - Page 210

• Manufacturer Part Number: NHE6300ESB S L7XJ
• Manufacturer: Intel

Specifications of NHE6300ESB S L7XJ

• Lead Free Status / RoHS Status: Compliant

Table 98.
5.17.5.4 Address Fields
Table 99.
Intel
DS
210
®
6300ESB I/O Controller Hub
Packet Identifier Field
A packet identifier (PID) immediately follows the SYNC field of every USB packet. A PID
consists of a four bit packet type field followed by a four-bit check field as shown in
Table
packet and the type of error detection applied to the packet. The four-bit check field of
the PID insures reliable decoding of the PID so that the remainder of the packet is
interpreted correctly. The PID check field is generated by performing a ones
complement of the packet type field.
Any PID received with a failed check field or which decodes to a non-defined value is
assumed to be corrupted and the remainder of the packet is assumed to be corrupted
and is ignored by the receiver. PID types, codes, and descriptions are listed in
PID Types
PIDs are divided into four coding groups: token, data, handshake, and special, with the
first two transmitted PID bits (PID[1:0]) indicating which group. This accounts for the
distribution of PID codes.
Function endpoints are addressed using two fields: the function address field and
endpoint field.
Address Field
Address Field
Token
Data
Handshake
Special
PID Type
97. The PID indicates the type of packet and, by inference, the format of the
Bit
0
1
2
3
SETUP
DATA0
DATA1
Name
STALL
PID
OUT
ACK
NAK
SOF
PRE
IN
PID[3:0]
Data Sent
b0001
b1001
b0101
b1101
b0011
b1011
b0010
b1010
b1110
b1100
ADDR 0
ADDR 1
ADDR 2
ADDR 3
Address + endpoint number in host -> function
transaction
Address + endpoint number in function -> host
transaction
Start of frame marker and frame number
Address + endpoint number in host -> function
transaction for setup to a control endpoint
Data packet PID even
Data packet PID odd
Receiver accepts error free data packet
Rx device cannot accept data or Tx device cannot send
data
Endpoint is stalled
Host-issued preamble. Enables downstream bus traffic to
low speed devices.
Bit
4
5
6
Description
Order Number: 300641-004US
Intel
®
Data Sent
ADDR 4
ADDR 5
ADDR 6
6300ESB ICH—5
November 2007
Table
98.