參數(shù)資料
型號(hào): USB3450-FZG
廠商: STANDARD MICROSYSTEMS CORP
元件分類(lèi): 微控制器/微處理器
英文描述: HI-SPEED USB HOST OR DEVICE PHY WITH UTMI+INTERFACE
中文描述: SERIAL COMM CONTROLLER, QCC40
封裝: 6 X 6 MM, 0.90 MM HEIGHT, 0.50 MM PITCH, ROHS COMPLIANT, MO-220, QFN-40
文件頁(yè)數(shù): 32/40頁(yè)
文件大?。?/td> 1086K
代理商: USB3450-FZG
Hi-Speed USB Host or Device PHY With UTMI+ Interface
Datasheet
Revision 0.1 (05-11-05)
32
SMSC USB3450
DATASHEET
Notes:
T0 may occur to 4ms after HS Reset T0.
The Link must assert the Chirp K for 66000 CLKOUT cycles to ensure a 1ms minimum duration.
Figure 7.3 HS Detection Handshake Timing Behavior (FS Mode)
Table 7.6 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
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