ISP1761 Datasheet, PDF (41/158 Pages) NXP Semiconductors – Hi-Speed Universal Serial Bus On-The-Go controller

Philips Semiconductors
ISP1761
Hi-Speed USB OTG controller
Once the LastPTD bit corresponding to a PTD is set, this will be the last PTD processed
(checking V = 1) in that PTD category. Subsequently, the process will restart with the first
PTD (of that group). This is useful to reduce the time in which all the PTDs (the respective
memory space) would be checked, especially if only a few PTDs are defined. The
LastPTD bit must be normally set to a higher position than any other position indicated by
the NextPTDPointer from an active PTD.
8.2.11 INT PTD Done Map register (R: 0140h)
The bit description of the register is given in Table 28.
Table 28: INT PTD Done Map register: bit description
Bit
Symbol
Access Value
Description
31 to 0
INT_PTD_DONE_ R
MAP[31:0]
0000 0000h INT PTD Done Map: Done map for
each of the 32 PTDs for the INT transfer
This register represents a direct map of the done status of the 32 PTDs. The bit
corresponding to a certain PTD will be set to logic 1 as soon as that PTD execution is
completed. Reading the Done Map register will clear all the bits that are set to logic 1, and
the next reading will reflect the updated status of new executed PTDs.
8.2.12 INT PTD Skip Map register (R/W: 0144h)
Table 29 shows the bit description of the INT PTD Skip Map register.
Table 29: INT PTD Skip Map register: bit description
Bit
Symbol
Access Value
Description
31 to 0 INT_PTD_SKIP R/W
_MAP[31:0]
FFFF FFFFh INT PTD Skip Map: Skip map for each of
the 32 PTDs for the INT transfer
When a bit in the PTD Skip map is set to logic 1 that PTD will be skipped although its V bit
may be set. The information in that PTD is not processed. For example, NextPTDPointer
will not affect the order of processing of PTDs. The Skip bit should not be normally set on
the position indicated by NextPTDPointer.
8.2.13 INT PTD Last PTD register (R/W: 0148h)
The bit description of the register is given in Table 30.
Table 30: INT PTD Last PTD register: bit description
Bit
Symbol Access Value
Description
31 to 0 INT_PTD_ R/W
LAST_
PTD[31:0]
0000 0000h
INT PTD Last PTD: Last PTD of the 32 PTDs.
1h — One PTD in INT
2h — Two PTDs in INT
3h — Three PTDs in INT.
Once the LastPTD bit corresponding to a PTD is set, this will be the last PTD processed
(checking V = 1) in that PTD category. Subsequently, the process will restart with the first
PTD (of that group). This is useful to reduce the time in which all the PTDs (the respective
memory space) would be checked, especially if only a few PTDs are defined. The
LastPTD bit must be normally set to a higher position than any other position indicated by
the NextPTDPointer from an active PTD.
9397 750 13258
Product data sheet
Rev. 01 — 12 January 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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