USB3320C-EZK Standard Microsystems (SMSC), USB3320C-EZK Datasheet - Page 24

• Manufacturer Part Number: USB3320C-EZK
• Description: USB PHY
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB3320C-EZK

• Lead Free Status / RoHS Status: Compliant

Revision 1.0 (07-14-09)
5.2.2
SIGNALING MODE
General Settings
Tri-State Drivers
Power-up or VBUS < V
Host Settings
Host Chirp
Host Hi-Speed
Host Full Speed
Host HS/FS Suspend
Host HS/FS Resume
Host low Speed
Host LS Suspend
it may be desirable to compensate for loss by adjusting the HS transmitter amplitude. The Boost bits
in the
DM pins.
Termination Resistors
The USB3320 transceiver fully integrates all of the USB termination resistors on both DP and DM. This
includes 1.5kΩ pull-up resistors, 15kΩ pull-down resistors and the 45Ω high speed termination
resistors. These resistors require no tuning or trimming by the Link. The state of the resistors is
determined by the operating mode of the transceiver when operating in synchronous mode.
The XcvrSelect[1:0], TermSelect and OpMode[1:0] bits in the
DpPulldown and DmPulldown bits in the
valid resistor combinations are shown in
configurations shown. If a ULPI Register Setting is configured that does not match a setting in the
table, the transceiver operation is not guaranteed and the settings in the last row of
used.
The USB3320 also includes two DP and DM pull-up resistors described in
RPU_DP_EN activates the 1.5kΩ DP pull-up resistor
RPU_DM_EN activates the 1.5kΩ DM pull-up resistor
RPD_DP_EN activates the 15kΩ DP pull-down resistor
RPD_DM_EN activates the 15kΩ DM pull-down resistor
HSTERM_EN activates the 45Ω DP and DM high speed termination resistors
HS TX Boost
SESSEND
Table 5.1 DP/DM Termination vs. Signaling Mode
register may be configured to adjust the HS transmitter amplitude at the DP and
XXb
X1b
01b
00b
00b
01b
01b
10b
10b
ULPI REGISTER SETTINGS
DATASHEET
Xb
0b
0b
0b
1b
1b
1b
1b
1b
OTG Control
24
Table
01b
00b
10b
00b
00b
00b
10b
00b
00b
5.1, and operation is guaranteed in only the
register control the configuration. The possible
Xb
1b
1b
1b
1b
1b
1b
1b
1b
Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver
Xb
1b
1b
1b
1b
1b
1b
1b
1b
Function Control
0b
0b
0b
0b
0b
0b
0b
0b
0b
USB3320 TERMINATION
RESISTOR SETTINGS
Section
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
1b
1b
1b
1b
1b
1b
1b
1b
5.8.
register, and the
Table 5.1
SMSC USB3320
0b
1b
1b
1b
1b
1b
1b
1b
1b
Datasheet
will be
0b
0b
1b
1b
0b
0b
0b
0b
0b