XR22802 Datasheet, PDF (8/46 Pages) Exar Corporation – Hi-Speed USB to 10/100 Ethernet Bridge

Functional Block Diagram
5.0V VCC
5.0V VCC
GND
GND
XTALIN
XTALOUT
25 MHz
Xtal
USBD+
USBD-
VBUS_SENSE
LOW_PWR#
USB
2.0
Phy
USB 2.0
Hub
USB
Descriptors
OTP
XR22802
10/100
Ethernet
MAC
10/100
Ethernet
PHY
UART
Channel A
Pin
UART
Mux
Channel B
EDGE
Controller
I2C Master
ETH_LINK
ETH_SPD
ETH_TX+
ETH_TX-
ETH_RX+
ETH_RX-
E15/TXB
E14/RXB/RWKB#
E13/RTSB#/RS485B/GB5
E12/CTSB#/GB4
E11/DTRB#/GB3
E10/DSRB#/GB2
E9/CDB#/GB1
E8/RIB#/RWKB#/GB0
E7/TXA
E6/RXA/RWKA#
E5/RTSA#/RS485A/GA5
E4/CTSA#/GA4
E3/DTRA#/GA3
E2/DSRA#/GA2
E1/CDA#/GA1
E0/RIA#/RWKA#/GA0
E[31:16]
SDA
SCL
© 2015 Exar Corporation
8 / 46
exar.com/XR22802
Rev 1B