USB 2.0 HSIC Hi-Speed 4-Port Hub Controller
Datasheet
The USB4604 is available in commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature
range versions.
1.1
Block Diagram
Figure 1.1 details the internal block diagram of the USB4604.
Up or
Downstream
HSIC/USB
To I2C Master/Slave
SDA SCL
VDDCOREREG
VDDA33
VBAT
RESET_N
VDD33
VDDCR12
Serial
Interface
1.2V Reg
3.3V Reg
Flex HSIC Flex PHY
Repeater
SIE
Controller
TT #1 TT #2 TT #3 TT #4 TT #5 Port Controller
2KB
UDC
Port Power
OCS
Bridge
Routing & Port Re-Ordering Logic
DP
20
SRAM
GPIO
GPIO
SPI
256B
IRAM
8051
Controller
SPI/I2C
Swap PHY
PHY
PHY
PHY
2KB
OTP
4KB
SRAM ROM
32KB
USB
USB
USB
USB
Down or Downstream Downstream Downstream
Upstream
Figure 1.1 System Block Diagram
Revision 1.0 (06-17-13)
8
SMSC USB4604
DATASHEET
SMSC [ SMSC CORPORATION ]
