isp1760 NXP Semiconductors, isp1760 Datasheet - Page 71

• Manufacturer Part Number: isp1760
• Description: Hi-speed Universal Serial Bus Host Controller For Embedded Applications
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 71:
9397 750 13257
Product data sheet
Bit
DW7
63 to 32
DW6
31 to 0
DW5
63 to 32
DW4
31 to 6
5
4 to 0
DW3
63
62
61
60
59
58
57
56 to 55
54 to 51
50 to 47
46 to 32
DW2
31 to 29
Symbol
reserved
reserved
reserved
reserved
J
NextPTDPointer
[1:0]
A
H
B
X
SC
reserved
DT
Cerr[1:0]
NakCnt[3:0]
reserved
NrBytesTransferred
[14:0]
reserved
Start and complete split for bulk, QHASS/SC: bit description
Access
-
-
-
-
SW — writes
SW — writes
SW — sets
HW — resets
HW — writes
HW — writes
SW — writes 0
HW — updates
-
HW — writes
SW — writes
HW — updates
SW — writes
HW — writes
SW — writes
-
HW — writes
-
Rev. 01 — 8 November 2004
Description
-
-
-
-
0 — To increment the PTD pointer
1 — To enable the next PTD branching.
Next PTD branching assigned by the PTD pointer.
Active: Write the same value as that in V.
Halt: This bit correspond to the Halt bit of the Status field of QH.
Babble: This bit correspond to the Babble Detected bit in the Status
field of the iTD, SiTD or QH.
1 — when babbling is detected, A and V are set to 0.
Transaction Error: This bit corresponds to the Transaction Error bit in
the status field.
Start/Complete:
0 — Start split
1 — Complete split.
-
Data Toggle: Set the Data Toggle bit to start for the PTD.
Error Counter: This field contains the error count for start and complete
split (QHASS). When an error has no response or bad response,
Cerr[1:0] will be decremented to zero and then Valid will be set to zero.
A NAK or NYET will reset Cerr[1:0]. For details, refer to Enhanced Host
Controller Interface Specification for Universal Serial Bus Rev. 1.0
Section 4.12.1.2 .
If retry has insufficient time at the beginning of a new SOF, the first PTD
must be this retry. This can be accomplished by if aperiodic PTD is not
advanced.
NAK Counter. The V bit is reset if NakCnt decrements to zero and RL
is a non-zero value. Not applicable to isochronous split transactions.
-
Number of Bytes Transferred: This field indicates the number of bytes
sent or received for this transaction.
-
Embedded Hi-Speed USB host controller
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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