參數(shù)資料
型號: TPS65950ZXNT
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
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): 14/167頁
文件大?。?/td> 2566K
代理商: TPS65950ZXNT
7.2.4.7 CEA/MCPC/UART Driver
7.2.4.8 Pullup/Pulldown Resistors
TPS65950
Integrated Power Management/Audio Codec
SWCS032 – OCTOBER 2008
www.ti.com
Table 7-11. HS Differential Transmitter (continued)
Parameter
Comments
Min(1)
Typ(2)
Max(3)
Unit
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
Table 7-12 lists the parameters of the CEA/MCPC/UART driver.
Table 7-12. CEA/MCPC/UART Driver
Parameter
Comments
Min(1)
Typ(2)
Max(3)
Unit
UART Driver CEA
Phone UART edge rates
tPH_UART_EDGE
DP_PULLDOWN asserted
1
s
Serial interface output high
VOH_SER
ISOURCE = 4 mA
2.4
3.3
3.6
V
Serial interface output low
VOL_SER
ISINK = –4 mA
0
0.1
0.4
V
UART Driver MCPC to DM.TX.
Input high level
VIH (*)
At DATA0 pin
VIO – 0.45
V
Input low level
VIL
At DATA0 pin
0.45
V
MCPC DM external pullup
RMCPCDM
External pullup
4.7k
10k
MCPC DM pullup supply
MCPCVDDEXT
External pullup supply
1.8
3.3
V
External pullup asserted
Open-drain output high level
ZOH
HiZ
HiZ means high impedance equivalent to
open
With open-drain NMOS to ground is ON
Open-drain output low level
VOL
0
0.6
V
and external pullup is asserted.
Carkit Pulse Driver
Pulse match tolerance
QPLS_MTCH
ZCR_SPKR_IN = 60 k
at f = 1 kHz
5%
Phone D– interrupt pulse
tPH_PLS_POS
ZCR_SPKR_IN = 60 k
at f = 1 kHz
200
600
ns
width
Phone positive pulse voltage
VPH_PLS_POS
ZCR_SPKR_IN = 60 k
at f = 1 kHz
2.8
3.6
V
(1)
Min = Minimum value
(2)
Typ = Typical value
(3)
Max = Maximum value
Table 7-13 lists the parameters of the pullup/pulldown resistors.
Table 7-13. Pullup/Pulldown Resistors
Parameter
Comments
Min(1)
Typ(2)
Max(3)
Unit
Pullup Resistors
Bus pullup resistor on upstream
RPUI
Bus idle
0.9
1.1
1.575
port (idle bus)
k
Bus pullup resistor on upstream
RPUA
Bus driven/driver outputs unloaded
1.425
2.2
3.09
port (receiving)
High (floating)
VIHZ
Pullups/pulldowns on DP and DM lines
2.7
3.6
V
Phone D+ pullup voltage
VPH_DP_UP
Driver outputs unloaded
3
3.3
3.6
V
(1)
Min = Minimum value
(2)
Typ = Typical value
(3)
Max = Maximum value
USB HS 2.0 OTG Transceiver
110
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