isp1760 NXP Semiconductors, isp1760 Datasheet - Page 61

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

Philips Semiconductors
Table 65:
9397 750 13257
Product data sheet
Bit
28 to 18
17 to 3
2 to 1
0
High-speed bulk IN and OUT, QHA: bit description
Symbol
MaxPacketLength
[10:0]
NrBytesToTransfer
[14:0]
reserved
V
Access
SW — writes
SW — writes
-
SW — sets
HW — resets
Rev. 01 — 8 November 2004
Description
Maximum Packet Length: This field indicates the maximum number
of bytes that can be sent to or received from an endpoint in a single
data packet. The maximum packet size for a bulk transfer is 512 bytes.
The maximum packet size for the isochronous transfer is also variable
at any whole number.
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 (32 kbytes).
-
Valid:
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.
…continued
Embedded Hi-Speed USB host controller
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
ISP1760
61 of 105