USB1T1103 Просмотр технического описания (PDF) - Fairchild Semiconductor
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USB1T1103 Datasheet PDF : 15 Pages
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Terminal Descriptions
Terminal Number
MLP14 MLP16
1
1
Terminal
Name
OE
2
2
RCV
3
3
Vp/Vpo
4
4
Vm/Vmo
5
5
SUSPND
—
6
NC
6
7
VCCIO
7
8
Vbusmon
9, 8
10, 9
D, D
10
11
NC
—
12
NC
11
13 VREG (3.3V)
12
14
VCC (5.0V)
13
15
VPU (3.3V)
14
16
Config
Exposed Exposed
Diepad Diepad
GND
I/O
I
O
I/O
I/O
I
O
AI/O
I
GND
Terminal Description
Output Enable:
Active LOW enables the transceiver to transmit data on the bus. When not
active the transceiver is in the receive mode (CMOS level is relative to VCCIO)
Receive Data Output:
Non-inverted CMOS level output for USB differential Input (CMOS output level
is relative to VCCIO). Driven LOW when SUSPN is HIGH; RCV output is stable
and preserved during SE0 condition.
Single-ended D receiver output VP (CMOS level relative to VCCIO):
Used for external detection of SE0, error conditions, speed of connected device;
Terminal also acts as drive data input Vpo (see Table 1 and Table 2).
Output drive is 4 mA buffer.
Single-ended D receiver output Vm (CMOS level relative to VCCIO):
Used for external detection of SE0, error conditions, speed of connected device;
Terminal also acts as drive data input Vmo (see Table 1 and Table 2).
Output drive is 4 mA buffer.
Suspend:
Enables a low power state (CMOS level is relative to VCCIO). While the
SUSPND terminal is active (HIGH) it will drive the RCV terminal to logic “0”
state.
No Connect
Supply Voltage for digital I/O terminals (1.65V to 3.6V):
When not connected the D and D terminals are in 3-STATE. This supply bus
is totally independent of VCC (5V) and VREG (3.3V), and must never exceed the
VREG (3.3) voltage. For VCCIO disconnected the O/O terminals are HIGH
Impedance and the VPU (3.3V) is turned off.
Vbus monitor output (CMOS level relative to VCCIO):
When Vbus ! 4.1V then Vbusmon HIGH and when Vbus 3.6V then
Vbusmon LOW. If SUSPND HIGH then Vbusmon is pulled HIGH.
Data , Data :
Differential data bus conforming to the USB standard. Terminals are HIGH
Impedance for bus powered mode when Vbus 3.6V. For ByPass Mode then
HIGH Impedance when VREG/ Vbus VREG minimum.
No Connect
No Connect
Internal Regulator Option:
Regulated supply output voltage (3.0V to 3.6V) during 5V operation;
decoupling capacitor of at least 0.1 PF is required.
Regulator ByPass Option:
Used as supply voltage input for 3.3V operation.
Internal Regulator Option:
Used as supply voltage input (4.0V to 5.5V); can be connected directly to USB
line Vbus.
Regulator ByPass Option:
Connected to VREG (3.3V)
Pull-up Supply Voltage (3.3V r 10%):
Connect an external 1.5k: resistor on D (FS data rate);
Terminal function is controlled by Config input terminal:
Config LOW VPU (3.3V) is floating (HIGH Impedance) for zero pull-up cur-
rent.
Config HIGH VPU (3.3V) 3.3V; internally connected to VREG (3.3V).
VPU is OFF in disable mode.
USB connect or disconnect software control input.
Configures 3.3V to external 1.5k: resistor on D when HIGH.
GND supply down bonded to exposed diepad to be connected to the PCB GND.
3
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