ISP1582BSUM ST-Ericsson Inc, ISP1582BSUM Datasheet - Page 27

• Manufacturer Part Number: ISP1582BSUM
• Description: IC USB PERIPH CONTROLLER 56HVQFN
• Manufacturer: ST-Ericsson Inc

Specifications of ISP1582BSUM

• Applications: USB Host/Peripheral Controller
• Interface: USB
• Voltage - Supply: 3 V ~ 3.6 V
• Package / Case: 56-VQFN Exposed Pad, 56-HVQFN, 56-SQFN, 56-DHVQFN
• Mounting Type: Surface Mount
• For Use With: ISP1582 PCI EVALKIT - PCI BUS EVAL KIT ISP1582
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-1885-2; ISP1582BS,518; ISP1582BS-T

NXP Semiconductors
AN10039_4
Application note
Fig 13. Mass storage protocol
5.1.1 Extracting Command Block Wrapper
5.1 Mass storage protocol
No
Bulk-only mass storage protocol
10. Read the Data Port register to extract CBW.
11. Check for valid CBW signature in the command block.
If the CBW signature is valid, the command is issued to the ATA or ATAPI device.
For an invalid command block, the respective OUT endpoint is stalled.
Check if the OUT
status of the drive
token is 31 bytes
Report CSW with
CBW received?
Data IN or OUT
8. Initialize the Endpoint Index register to the respective OUT endpoint.
9. Read the Buffer Length register. A buffer length of 31 indicates a command packet is
Determine the
Status error?
error status
process
in the buffer.
Start
Stop
Yes
Rev. 04 — 21 December 2006
Report CSW with
good status
No
Yes
Yes
No
ISP1582/83 Firmware Programming Guide
and issue command
Process the CBW
to the drive
Data stage
ATA and ATAPI protocol
required
AN10039
© NXP B.V. 2006. All rights reserved.
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