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參數資料
型號: TPS65930BZCHR
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PBGA139
封裝: 10 X 10 MM, 0.65 MM PITCH, GREEN, PLASTIC, NFBGA-139
文件頁數: 88/115頁
文件大小: 1232K
代理商: TPS65930BZCHR
SWCS037G
– MAY 2008 – REVISED APRIL 2011
Table 7-5. HS Differential Receiver
Parameter
Comments
Min
Typ
Max
Unit
Input Levels for HS
HS squelch detection threshold
VHSSQ
(Differential signal amplitude)
100
125
150
mV
HS disconnect detection threshold
VHSDSC
(Differential signal amplitude)
525
600
625
mV
HS data signaling common mode voltage
VHSCM
–50
200
500
mV
range
HS differential input sensitivity
VDIHS
(Differential signal amplitude)
–100
100
mV
Input Impedance for HS
Internal specification for input capacitance
CHSLOAD
11
pF
Internal CHSLOAD DP/DM matching
CHSLOADM
0.2
pF
External Components With the Total Budget Combined (without USB cable load)
External capacitance on DP or DM
2
pF
External series resistance on DP or DM
1
7.1.4.2
HS Differential Transmitter
The HS transmitter is always operated on the UTMI parallel interface. The parallel data on the interface is
serialized, bit stuffed, NRZI encoded, and transmitted as a dc output current on DP or DM, depending on
the data. Each line has an effective 22.5-
load to ground, which generates the voltage levels for
signaling.
A disconnect detector is also part of the HS transmitter. A disconnect on the far end of the cable causes
the impedance seen by the transmitter to double, thereby doubling the differential amplitude seen on the
DP/DM lines.
Table 7-6 lists the characteristics of the HS differential transmitter.
Table 7-6. HS Differential Transmitter
Parameter
Comments
Min
Typ
Max
Unit
Output Levels for HS
HS TX idle level
VHSOI
Absolute voltage DP/DM
– internal/external 45
–10
0
10
mV
HS TX data signaling high
VHSOH
Absolute voltage DP/DM
– internal/external 45
360
400
440
mV
HS data signaling low
VHSOL
–10
0
10
mV
Chirp J level
VCHIRPJ
Differential voltage
700
800
1100
mV
Chirp K level
VCHIRPK
Differential voltage
–900
–800
–500
mV
HS TX disconnect threshold
VDISCOUT
Absolute voltage DP/DM
– no external 45
700
mV
Driver Characteristics
Rise time
tHSR
(10%
–90%)
500
ps
Fall time
tHSF
(10%
–90%)
500
ps
Driver output resistance
ZHSDRV
Also serves as HS termination
40.5
45
49.5
74
USB Transceiver
Copyright
2008–2011, Texas Instruments Incorporated
focus.ti.com: TPS65930/TPS65920
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