參數(shù)資料
型號(hào)： TPS65950ZXNR
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PBGA209
封裝： 7 X 7 MM, 0.40 MM PITCH, PLASTIC, BGA-209
文件頁數(shù)： 11/167頁
文件大?。?/td> 2566K
代理商： TPS65950ZXNR
7.2.4.4 LS/FS Differential Transmitter
TPS65950
Integrated Power Management/Audio Codec
SWCS032 – OCTOBER 2008
www.ti.com
Table 7-8. LS/FS Differential Receiver
Parameter
Comments
Min(1)
Typ(2) Max(3)
Unit
Skew between VP/VM
SKWVP_VM
Driver outputs unloaded
–16
0
16
ns
Receiver power-up time
TPWR_UP_RCV
0
100
200
s
Differential common mode range
VCM
0.8
2.5
V
Differential input sensitivity
VDI
0.2
V
(1)
Min = Minimum value
(2)
Typ = Typical value
(3)
Max = Maximum value
The USB transceiver (TX) uses a differential output driver to drive the USB data signal D+/– onto the USB
cable. The driver outputs support 3-state operation to achieve bidirectional half-duplex transactions.
Table 7-9 lists the parameters of the LS/FS differential transmitter.
Table 7-9. LS/FS Differential Transmitter
Parameter
Comments
Min(1)
Typ(2)
Max(3)
Unit
B-device (dual-role) unconfigured
IB_OTG_UNCFG
150
A
average current
0 V = VBUS = 5.25 V, tAVG = 1 ms
B-device (secure remote password
[SRP] capable, peripheral only)
IB_PO_UNCFG
8
mA
unconfigured average current
10%–90%
FS fall time/rise time
tFf, tFr
4
20
ns
CL = 50 pF on DP and DM
10%–90%
FS rise and fall time matching
TFRFM
90%
110%
CL = 50 pF on DP and DM
FS width of SE0 interval during
Pulldowns R = 15 k
on DP and DM
tFst
14
ns
differential transition
Pullup R = 1.5 k
at 3.6 V on DP only
10%–90%
LS fall time/rise time
tLF, tLR
CL = [200–600] pF on DP and DM
75
300
ns
Pullup R = 1.5 k
at 3.6 V for DM only
10%–90%
LS rise and fall time matching
TLRFM
CL = [200–600] pF on DP and DM
80%
120%
Pullup R = 1.5 k
at 3.6 V for DM only
LS width of SE0 interval during
Pulldowns R = 15 k
on DP and DM
tLST
210
ns
differential transition
Pullup R = 1.5 k
at 3.6 V on DM only
Pulldowns R = 15 k
on DP and DM
Driver power-up time
TPWR_UP_TXD
0
100
200
s
Pullup R = 1.5 k
at 3.6 V on DM only
FS source driver jitter to next
tSDJ1
CL = 50 pF on DP and DM
–2
2
ns
transition
FS source driver jitter for paired
tSDJ2
CL = 50 pF on DP and DM
–1
1
ns
transitions
LS upstream facing port source
CL = [200.600] pF on DP and DM
tUSDJ1
–25
25
ns
driver jitter (next transition)
Pullup R = 1.5 k
at 3.6 V for DM only
LS upstream facing port source
CL = [200.600] pF on DP and DM
tUSDJ2
–10
10
ns
driver jitter (next transition)
Pullup R = 1.5 k
at 3.6 V for DM only
Pulldowns R = 15 k
on DP and DM
Output signal cross-over voltage
Vcrs
1.3
2
V
Pullup R = 1.5 k
at 3.6 V on DM only
High (driven)
VOH
Pulldowns R = 15 k
on DP and DM
2.8
3.3
3.6
V
Pullups R = 1.5 k
at 3.6 V on DP and
Low
VOL
0
0.1
0.3
V
DM
Driver output resistance
ZDRV/RS
28
36
44
(1)
Min = Minimum value
(2)
Typ = Typical value
(3)
Max = Maximum value
USB HS 2.0 OTG Transceiver
108
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