USB3500-ABZJ Standard Microsystems (SMSC), USB3500-ABZJ Datasheet - Page 32

• Manufacturer Part Number: USB3500-ABZJ
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB3500-ABZJ

• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 70C
• Package Type: QFN
• Rad Hardened: No
• Lead Free Status / Rohs Status: Compliant

Revision 1.0 (06-05-08)
7.2
7.3
LINESTATE[1:0]
MODE[1:0]
LS[1]
USB 2.0 TEST MODES
1
00
01
10
11
Test_Packet
SE0_NAK
OPMODES
Test Mode Support
LS[0]
The OPMODE[1:0] pins allow control of the operating modes.
The OPMODE[1:0] signals are normally changed only when the transmitter and the receiver are
quiescent, i.e. when entering a test mode or for a device initiated resume.
When using OPMODE[1:0] = 10, the SYNC and EOP patterns are not transmitted.
The only exception to this is when OPMODE[1:0] is set to 10 while TXVALID has been asserted (the
transceiver is transmitting a packet), in order to flag a transmission error. In this case, the USB3500
has already transmitted the SYNC pattern so upon negation of TXVALID the EOP must also be
transmitted to properly terminate the packet. Changing the OPMODE[1:0] signals under all other
conditions (while the transceiver is transmitting or receiving data) will generate undefined results.
K
J
1
Normal Operation
Non-Driving
Disable Bit Stuffing
and NRZI encoding
Reserved
STATE NAME
XCVRSEL[1:0]=10
TERMSELECT=1
Table 7.2 Host Linestate States (DPPD & DMPD = 1) (continued)
LOW SPEED
SE1
OPERATIONAL MODE
Transceiver operates with normal USB data encoding and decoding
Allows the transceiver logic to support a soft disconnect feature which tri-
states both the HS and FS transmitters, and removes any termination from
the USB making it appear to an upstream port that the device has been
disconnected from the bus
Disables bitstuffing and NRZI encoding logic so that 1's loaded from the
DATA bus become 'J's on the DP/DM and 0's become 'K's
N/A
State 0
State 2
State 2
State 0
Table 7.4 USB 2.0 Test Modes
Table 7.3 Operational Modes
XCVRSEL[1:0]=01
TERMSELECT=1
FULL SPEED
DATASHEET
SE1
STATE OF DP/DM LINES
32
Hi-Speed USB Host, Device or OTG PHY With UTMI+ Interface
LINK TRANSMITTED
USB3500 SETUP
Test Packet data
No transmit
DESCRIPTION
All '1's
All '0's
DATA
XCVRSEL[1:0]=00
TERMSELECT=0
OPMODE=00/01
HIGH SPEED
Invalid
XCVRSELECT &
TERMSELECT
XCVRSEL[1:0]=00
TERMSELECT=0
CHIRP MODE
OPMODE=10
HS
HS
HS
HS
Invalid
SMSC USB3500
Datasheet