EVB-USB7206 Evaluation Kit User’s Guide
DS50002937A-page 16
2019 Microchip Technology Inc.
demonstrates two of the six possible resistor values for each of CFG_BC_EN and
CFG_NON-REM. These straps are sensed by the USB7206 device at power-on to
determine the resultant configuration of the device.
To select the CFG_BC_EN and CFG_NON-REM modes, shunts must be connected to
J12, J15, and J17 headers.
To use the battery charging strap options, connect a shunt to pins 2–3 of J12 and
another shunt to J15 according to
. For the NON_REM strap options, connect
a shunt to pins 5 to 6 of J12 and connect a shunt to J17 according to
.
3.1.2
Power Source – Self Powered
The EVB-USB7206 only supports self-powered operation. Power is supplied through
one +12.0V regulated external power supply. The power supply is connected to the
2.5 mm connector J1 on the board. Alternatively, an external voltage can be supplied
to the screw terminal “12V” (J2). The +12.0V feeds a 15A regulator that o5.2V
(nominal) across the board and also supplies the +3.3V regulator and the 1.2V regula
-
tor.
3.1.3
Downstream Port Power Control
USB power to the six downstream ports is controlled via port power controllers with
auto-discharge functionality. All downstream ports support BC 1.2 battery charging.
The two downstream USB Type-C
®
ports are each capable of up to 3A of current at 5V.
The two downstream USB Type-A ports are capable of up to 2.1A at 5V.
3.1.4
USB Type-C
®
Ports
The USB7206 has two USB3.1 Gen 1 PHYs for each Type-C port. This eliminates the
need for an external multiplexer. The USB7206 also features integrated Type-C control
signal (CC) detection to determine when and in what orientation a USB Type-C
®
attach
has been made. It powers only the USB3.1 GEN 1 PHY needed for USB communica
-
tion. To reduce power, the USB7206 powers down unused USB3.1 Gen 1 PHYs. In
cases where no USB Type-C attach is detected, both USB3.1 Gen 1 PHYs associated
with that port are powered down.
TABLE 3-1:
BATTERY CHARGING OPTIONS (CFG_BC_EN - J15)
J15 Shunt Position
(J12 is shunted pins 2–3.)
2–3
All ports are BC 1.2-disabled.
1–2
All downstream ports are BC1.2-enabled.
TABLE 3-2:
NON-REMOVABLE PORT OPTIONS (CFG_NON-REM - J17)
J17 Shunt Position
(J12 is shunted pins 5–6.)
1–2
All ports are non-removable.
2–3
All ports are removable.
CAUTION
The supplied 12.0V external power supply cannot support simultaneous battery
charging on all downstream ports. Use a higher power supply if the required test use
case exceeds the power capability of the supply. Failure to heed to this warning could
result in damage to the 12.0V external power supply.
