參數(shù)資料
型號(hào): GT3200
廠商: SMSC Corporation
英文描述: USB2.0 PJY IC
中文描述: USB2.0接口PJY集成電路
文件頁(yè)數(shù): 37/51頁(yè)
文件大?。?/td> 1462K
代理商: GT3200
USB2.0 PHY IC
SMSC GT3200, SMSC USB3250
32
Revision 1.3 (10-05-04)
DATASHEET
Note 8.1
T0 may occur to 4ms after HS Reset T0.
Note 8.2
The SIE must assert the Chirp K for 66000 CLK60 cycles to ensure a 1ms minimum
duration.
Figure 8.3 HS Detection Handshake Timing Behavior (FS Mode)
Table 8.6 HS Detection Handshake Timing Values (FS Mode)
TIMING
PARAMETER
DESCRIPTION
VALUE
T0
HS Handshake begins. DP pull-up enabled, HS
terminations disabled.
0 (reference)
T1
Device enables HS Transceiver and asserts Chirp
K on the bus.
T0 < T1 < HS Reset T0 + 6.0ms
T2
Device removes Chirp K from the bus. 1ms
minimum width.
T1 + 1.0 ms < T2 < HS Reset
T0 + 7.0ms
T3
Earliest time when downstream facing port may
assert Chirp KJ sequence on the bus.
T2 < T3 < T2+100μs
T4
Chirp not detected by the device. Device reverts to
FS default state and waits for end of reset.
T2 + 1.0ms < T4 < T2 + 2.5ms
T5
Earliest time at which host port may end reset
HS Reset T0 + 10ms
No
Downstream
Facing Port
Chirps
SE0
SOF
FS Mode
Device Chirp K
TXVALID
TERMSELECT
DP/DM
XCVRSELECT
OPMODE 1
OPMODE 0
time
T1
T2
T0
T4
T5
T3
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