參數(shù)資料
型號: GT3200-JN
廠商: STANDARD MICROSYSTEMS CORP
元件分類: 網(wǎng)絡(luò)接口
英文描述: USB2.0 PJY IC
中文描述: DATACOM, INTERFACE CIRCUIT, PQFP64
封裝: 7 X 7 MM, 1.40 MM HEIGHT, TQFP-64
文件頁數(shù): 39/51頁
文件大?。?/td> 1462K
代理商: GT3200-JN
USB2.0 PHY IC
SMSC GT3200, SMSC USB3250
34
Revision 1.3 (10-05-04)
DATASHEET
Figure 8.5 HS Detection Handshake Timing Behavior (HS Mode)
Table 8.7 Reset Timing Values
TIMING
PARAMETER
DESCRIPTION
VALUE
T0
HS Handshake begins. DP pull-up enabled, HS
terminations disabled.
0 (reference)
T1
Device asserts Chirp K on the bus.
T0 < T1 < HS Reset T0 + 6.0ms
T2
Device removes Chirp K from the bus. 1 ms minimum
width.
T0 + 1.0ms < T2 < HS Reset T0 +
7.0ms
T3
Downstream facing port asserts Chirp K on the bus.
T2 < T3 < T2+100μs
T4
Downstream facing port toggles Chirp K to Chirp J on
the bus.
T3 + 40μs < T4 < T3 + 60μs
T5
Downstream facing port toggles Chirp J to Chirp K on
the bus.
T4 + 40μs < T5 < T4 + 60μs
T6
Device detects downstream port chirp.
T6
T7
Chirp detected by the device. Device removes DP
pull-up and asserts HS terminations, reverts to HS
default state and waits for end of reset.
T6 < T7 < T6 + 500μs
T8
Terminate host port Chirp K-J sequence (Repeating
T4 and T5)
T9 - 500μs < T8 < T9 - 100μs
T1
T2
TXVALID
Downstream Facing
Port Chirps
Device
Chirp K
TERMSELECT
DP/DM
K
J
K
J
K
J
K
J
Device
Port
Chirp
SE0
SOF
XCVRSELECT
HS Mode
OPMODE 1
OPMODE 0
time
T0
T3
T4 T5
T6
T7
T8
T9
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