isp1160 NXP Semiconductors, isp1160 Datasheet - Page 20

• Manufacturer Part Number: isp1160
• Description: Isp1160 Embedded Universal Serial Bus Host Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 4:
9397 750 13963
Product data
Bit
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Philips Transfer Descriptor (PTD): bit allocation
Format
7
9.3.1 PTD data header definition
reserved
The PTD data structure is used by the HC to define a buffer of data that will be moved
to or from an endpoint in the USB device. This data buffer is set up for the current
frame (1 ms frame) by the HCD. The payload data for every transfer in the frame must
have a PTD as the header to describe the characteristic of the transfer. The PTD data
is DWORD (double-word or 4-byte) aligned.
The PTD forms the header of the PTD data. It tells the HC the transfer type, where
the payload data should go, and the actual size of the payload data. A PTD is an
8-byte data structure that is very important for HCD programming.
CompletionCode[3:0]
EndpointNumber[3:0]
6
B5_5
5
Rev. 05 — 24 December 2004
reserved
MaxPacketSize[7:0]
ActualBytes[7:0]
4
TotalBytes[7:0]
reserved
FunctionAddress[6:0]
Active
Last
DirectionPID[1:0]
3
Toggle
Speed
Embedded USB Host Controller
2
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
MaxPacketSize[9:8]
ActualBytes[9:8]
1
TotalBytes[9:8]
ISP1160
0
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