W90N745CD Datasheet, PDF (396/422 Pages) Winbond – 16/32-bit ARM microcontroller

W90N745CD/W90N745CDG
7.3.3 USB Transceiver AC Characteristics
Rise Time
CL
Differential
90%
Data Lines
10%
CL
tR
Fall Time
90%
10%
tF
Full Speed: 4 to 20ns at CL = 50pF
Low Speed: 75ns at CL = 50pF, 300ns at CL = 350pF
Data Signal Rise and Fall Time
USB Transceiver AC Characteristics
SYMBOL
T_R
T_F
T_RFM
DESCRIPTION
Rise Time
Fall Time
Rise/Fall Time Matching
T_DRATE
Full Speed Data Rate
CONDITIONS
CL = 50 pF
CL = 50 pF
Average bit rate
(12 Mb/s ± 0.25%)
MIN MAX UNIT
4
20
ns
4
20
ns
90
110
%
11.97 12.03 Mbps
7.3.4 EMC RMII AC Characteristics
The signal timing characteristics conforms to the guidelines specified in IEEE Std. 802.3.
PHY_REFCLK
PHY_TXEN
PHY_TXD[1:0]
PHY_RXERR
PHY_RXD[1:0]
PHY_CRSDV
T_FREQ
T_TXO
T_TXH
T_DUTY
valid data
T_RXS
T_RXH
valid data
Publication Release Date: September 22, 2006
- 391 -
Revision A2