isp1760 NXP Semiconductors, isp1760 Datasheet - Page 77

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

Philips Semiconductors
Table 73:
9397 750 13257
Product data sheet
Bit
28 to 18
17 to 3
2 to 1
0
Symbol
TT_MPS_Len
[10:0]
NrBytesTo
Transfer
[14:0]
reserved
V
Start and complete split for isochronous, SiTD: bit description
Access
SW — writes
SW — writes
-
SW — sets
HW — resets
Rev. 01 — 8 November 2004
Description
Transaction Translator Maximum Packet Size Length: This field
indicates the maximum number of bytes that can be sent per start split
depending on the number of total bytes needed. If the total bytes to be
sent for the entire ms is greater than 188 bytes, this field should be set
to 188 bytes for an OUT token and 192 byes for an IN token. Otherwise,
this field should be equal to the total bytes sent.
Number of Bytes to Transfer: This field indicates the number of bytes
that can be transferred by this data structure. It is used to indicate the
depth of the DATA field. This field is restricted to 1023 bytes because in
SiTD the maximum allowable payload for a full-speed device is
1023 bytes. This field indirectly becomes the maximum packet size of
the downstream device.
-
0 — This bit is deactivated when the entire PTD is executed—across
1 — Software updates to one when there is payload to be sent or
received even across ms boundary. The current PTD is active.
SOF and SOF—or when a fatal error is encountered.
Embedded Hi-Speed USB host controller
…continued
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
ISP1760
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