Datasheet

USB2422
DS00001726B-page 4  2013 - 2015 Microchip Technology Inc.
1.0 BLOCK DIAGRAM
FIGURE 1-1: USB2422 BLOCK DIAGRAM
To Upstream
V
BUS
3.3V
Upstream
PHY
Upstream USB
Data
Repeater
Controller
SIE
Serial
Interface
PLL
24 MHz Crystal
To
SMBus Master
Routing & Port Re-Ordering
Logic
SMBCLK
SMBDATA
Port
Controller
Bus-Power
Detect/V
BUS
Pulse
TT
PHY#1
Port #1
OC
Sense
Switch
Driver
PHY#2
Port #2
OC
Sense
Switch
Driver
USB Data
Downstream
OC Sense
Switch
USB Data
Downstream
OC Sense
Switch
CRFILT PLLFILT
1.2V Reg