ST STUSB03E, User Manual

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Hardware description UM0284
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1.2 Jumper assignments
Table 1 describes the jumper assignments of the demo board.
1.3 Connector assignments
Table 1. Demo board jumper assignments
Jumper
Related
pin(s)
Description
J1 D+
Connected: Connects a 1.5k
Ω
pull-up resistor to the D+ data line. Must be
connected in Full-Speed mode when R
SEL
= 0
Leave Open when in Low-speed mode.
J2 D-
Connected: Connects a 1.5k
Ω
p
ull-up resistor to the D- data line. Must be
connected in Low-speed mode.
Leave Open when in Full-speed mode.
J3 V
BUS
1-2 Connected: Selects CN1 connector as 5V V
BUS
voltage source.
2-3 Connected: 5V V
BUS
voltage is supplied by CN3 USB connector
J4 SPD
1-2 Connected: STUSB03E transceiver in Low-speed mode
(1)
2-3 Connected: STUSB03E transceiver in Full-speed mode
1. Leave this jumper open when controlling this function using an external USB controller connected to CN2.
J5
CON,
RSEL,
SPD, V
PU
1-2 Connected: V
PU
pin in high impedance; data line pull-up resistor
disconnected
(1)
2-3 Connected: V
PU
pin outputs 3.3V ±10% (data line pull-up resistor
connected to internal LDO regulator output) when SPD = 1 and RSEL = 0 or
when SPD = 0
J6 SUS
1-2 Connected: STUSB03E transceiver active
(1)
2-3 Connected: STUSB03E transceiver in Suspend mode
J7 OE#
1-2 Connected: STUSB03E transceiver in Transmit mode
(1)
2-3 Connected: STUSB03E transceiver in Receive mode
J8 RSEL
1-2 Connected: Internal FS pull-up resistor disabled
2-3 Connected: Internal FS pull-up resistor enabled
J9 V
BUSDET
Connected: Enables the V
BUS
voltage detection LED. LED switches ON
when voltage greater than the V
BUSDET
threshold is detected.
Table 2. Demo board connectors
Connector Descriptions
CN1 Power supply: V
BUS
, V
IF
and GND. Refer to Table 3 for pin assignments.
CN2
Header connector for USB controller connection. Refer to Table 4 for USB
controller connections.
CN3 USB mini-B connector.