gt3200 SMC Corporation, gt3200 Datasheet - Page 37

• Manufacturer Part Number: gt3200
• Description: Usb2.0 Phy Ic
• Manufacturer: SMC Corporation

USB2.0 PHY IC
SMSC GT3200, SMSC USB3250
PARAMETER
XCVRSELECT
TERMSELECT
TIMING
OPMODE 0
OPMODE 1
T0
T1
T2
T3
T4
T5
TXVALID
DP/DM
Note 8.1
Note 8.2
time
Figure 8.3 HS Detection Handshake Timing Behavior (FS Mode)
Table 8.6 HS Detection Handshake Timing Values (FS Mode)
T0
HS Handshake begins. DP pull-up enabled, HS
terminations disabled.
Device enables HS Transceiver and asserts Chirp
K on the bus.
Device removes Chirp K from the bus. 1ms
minimum width.
Earliest time when downstream facing port may
assert Chirp KJ sequence on the bus.
Chirp not detected by the device. Device reverts to
FS default state and waits for end of reset.
Earliest time at which host port may end reset
T0 may occur to 4ms after HS Reset T0.
The SIE must assert the Chirp K for 66000 CLK60 cycles to ensure a 1ms minimum
duration.
Device Chirp K
T1
DESCRIPTION
T2
T3
DATASHEET
Downstream
Facing Port
Chirps
No
32
T4
SE0
FS Mode
0 (reference)
T0 < T1 < HS Reset T0 + 6.0ms
T1 + 1.0 ms < T2 < HS Reset
T0 + 7.0ms
T2 < T3 < T2+100µs
T2 + 1.0ms < T4 < T2 + 2.5ms
HS Reset T0 + 10ms
VALUE
Revision 1.3 (10-05-04)
T5
x x x x x x x
x x x x x x x
x x x x x x x
x x x x x x x
x x x x x x x
SOF