LAN9512I-JZX SMSC, LAN9512I-JZX Datasheet - Page 6

• Manufacturer Part Number: LAN9512I-JZX
• Description: Ethernet ICs Hi-Speed USB 2.0 Hub High 10/100 Ethernet
• Manufacturer: SMSC

Specifications of LAN9512I-JZX

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Chapter 1 Introduction
Revision 1.0 (11-24-09)
1.1
1.1.1
DP/DM
USB
JTAG
LAN9512/LAN9512i
Block Diagram
Overview
The LAN9512/LAN9512i is a high performance Hi-Speed USB 2.0 hub with a 10/100 Ethernet
controller. With applications ranging from embedded systems, desktop PCs, notebook PCs, printers,
game consoles, and docking stations, the LAN9512/LAN9512i is targeted as a high performance, low
cost USB/Ethernet and USB/USB connectivity solution.
The LAN9512/LAN9512i contains an integrated USB 2.0 hub, two integrated downstream USB 2.0
PHYs, an integrated upstream USB 2.0 PHY, a 10/100 Ethernet PHY, a 10/100 Ethernet Controller, a
TAP controller, and a EEPROM controller. A block diagram of the LAN9512/LAN9512i is provided in
Figure
The LAN9512/LAN9512i hub provides over 30 programmable features, including:
PortMap (also referred to as port remap) which provides flexible port mapping and disabling
sequences. The downstream ports of the LAN9512/LAN9512i hub can be reordered or disabled in any
sequence to support multiple platform designs’ with minimum effort. For any port that is disabled, the
LAN9512/LAN9512i automatically reorders the remaining ports to match the USB host controller’s port
numbering scheme.
PortSwap which adds per-port programmability to USB differential-pair pin locations. PortSwap allows
direct alignment of USB signals (D+/D-) to connectors avoiding uneven trace length or crossing of the
USB differential signals on the PCB.
PHYBoost which enables four programmable levels of USB signal drive strength in USB port
transceivers. PHYBoost attempts to restore USB signal integrity that has been compromised by system
level variables such as poor PCB layout, long cables, etc..
Controller
Upstream
USB PHY
TAP
1.1.
Downstream
USB PHY
DP/DM
USB
Figure 1.1 Internal Block Diagram
USB 2.0
Hub
DATASHEET
Downstream
USB PHY
6
DP/DM
USB
Controller
Ethernet
10/100
USB 2.0 Hub and 10/100 Ethernet Controller
Controller
EEPROM
Ethernet
PHY
SMSC LAN9512/LAN9512i
Datasheet
EEPROM
Ethernet