isp1761 NXP Semiconductors, isp1761 Datasheet - Page 80

• Manufacturer Part Number: isp1761
• Description: Hi-speed Universal Serial Bus On-the-go Controller
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 74.
ISP1761_4
Product data sheet
Bit
DW0
31
30 to 29
28 to 18
17 to 3
2 to 1
0
Symbol
EndPt[0]
reserved
TT_MPS_Len
[10:0]
NrBytesTo
Transfer[14:0]
reserved
V
Start and complete split for isochronous: bit description
Access
SW — writes
-
SW — writes
SW — writes
-
SW — sets
HW — resets
Rev. 04 — 5 March 2007
Value Description
-
-
-
-
-
-
Endpoint: This is the USB address of the endpoint within the
function.
-
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 millisecond is greater
than 188 bytes, this field should be set to 188 bytes for an OUT
token and 192 bytes 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, or
when a fatal error is encountered.
1 — Software updates to one when there is payload to be sent
or received. The current PTD is active.
…continued
Hi-Speed USB OTG controller
© NXP B.V. 2007. All rights reserved.
ISP1761
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