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TUSB2136 Datasheet(PDF) 46 Page - Texas Instruments

No. de pieza TUSB2136
Descripción Electrónicos  UNIVERSAL SERIAL BUS KEYBOARD HUB CONTROLLER
PDF  50 Pages
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TUSB2136 Datasheet(HTML) 46 Page - Texas Instruments

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4–2
18
× 8 Matrix
8
TUSB2136
P0[7:0]
P1[7:0]
P3.6
P3.7
8
1
1
8
P2[7:0]
Figure 4–2. Keyboard Matrix Scan Connection
C3
R1
R2
R3
R4
R5
VCC
VCC
I2C
EEPROM
VCC
VCC
Vreg
VREN
SUSP
C4
C5
X1
X2
SCL
SDA
PS
PWR OVCR
TUSB2136
C2
VR
TPS76333
C1
5 V
TPS2042
Figure 4–3. Partial Connection Bus Power Mode
3.3 V
1.5 k
Ω
D+
D–
DP0
DM0
1.5 k
Ω
D+
D–
DP0
DM0
Bus PWR
(5 V)
PUR
(a)
(b)
Figure 4–4. Upstream Connection (a) Non-Switching Power Mode (b) Switching Power Mode



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