USB3280 SMSC Corporation, USB3280 Datasheet - Page 25

• Manufacturer Part Number: USB3280
• Description: Hi-Speed USB Device PHY
• Manufacturer: SMSC Corporation

Hi-Speed USB Device PHY with UTMI Interface
Datasheet
SMSC USB3280
The receivers connect directly to the USB cable. The block contains a separate differential receiver
for HS and FS mode. Depending on the mode, the selected receiver provides the serial data stream
through the mulitplexer to the RX Logic block. The FS mode section of the FS/HS RX block also
consists of a single-ended receiver on each of the data lines to determine the correct FS LINESTATE.
For HS mode support, the FS/HS RX block contains a squelch circuit to insure that noise is never
interpreted as data.
Figure 7.7 Receive Timing for Data Packet (with CRC-16)
Figure 7.6 Receive Timing for Setup Packet
DATASHEET
25
Revision 1.2 (10-27-06)