LAN9514-JZX Standard Microsystems (SMSC), LAN9514-JZX Datasheet - Page 32

• Manufacturer Part Number: LAN9514-JZX
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN9514-JZX

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Lead Free Status / RoHS Status: Compliant

Revision 1.0 (11-24-09)
BITS
BITS
3:2
1:0
7:2
7:6
5:4
1
0
Upstream USB Electrical Signaling Drive Strength Boost Bit for
Downstream Port 4 (BOOST_IOUT_4)
00 = Normal electrical drive strength
01 = Elevated electrical drive strength (+4% boost)
10 = Elevated electrical drive strength (+8% boost)
11 = Elevated electrical drive strength (+12% boost)
Upstream USB Electrical Signaling Drive Strength Boost Bit for
Downstream Port 3 (BOOST_IOUT_3)
00 = Normal electrical drive strength
01 = Elevated electrical drive strength (+4% boost)
10 = Elevated electrical drive strength (+8% boost)
11 = Elevated electrical drive strength (+12% boost)
Upstream USB Electrical Signaling Drive Strength Boost Bit for
Downstream Port 2 (BOOST_IOUT_2)
00 = Normal electrical drive strength
01 = Elevated electrical drive strength (+4% boost)
10 = Elevated electrical drive strength (+8% boost)
11 = Elevated electrical drive strength (+12% boost)
RESERVED
RESERVED
Reset (RESET)
Resets the internal memory back to nRESET assertion default settings.
0 = Normal Run/Idle State
1 = Force a reset of the registers to their default state
Note:
USB Attach and Write Protect (USB_ATTACH)
0 = Device is in configuration state
1 = Hub will signal a USB attach event to an upstream device, and the
internal memory (address range 00h - FEh) is “write-protected” to prevent
unintentional data corruption.
Note:
During this reset, this bit is automatically cleared to its default value
of 0.
This bit is write once and is only cleared by assertion of the external
nRESET or POR.
Table 3.10 Status/Command Register (STCD) Format
Table 3.9 Boost_4:2 Register (BOOST42) Format
DESCRIPTION
DESCRIPTION
DATASHEET
32
USB 2.0 Hub and 10/100 Ethernet Controller
SMSC LAN9514/LAN9514i
DEFAULT
DEFAULT
000000b
00b
00b
00b
00b
0b
1b
Datasheet