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© 2021 ROHM Co., Ltd.
No. 64UG056E Rev.001
2021.10
User’s Guide
BD93E11GWL-EVK-001 (Stand-Alone)
(Check operation)
1.
Prepare any source device, e.g., Type-C/PD adapter, then connect to the Type-C receptacle on the EVK via a cable. Please
insert a USB Type-C/PD protocol analyzer between the Source device and EVK if it is required to monitor the transaction on
CC signals as shown in Figure 8.
2.
When LD_VBRDY lights up, it shows that the connection with a Source device is completed. LD_ORI shows the orientation
of the inserted plug.
3.
Confirm the contracted voltage from VSNK using a digital multimeter as shown in Figure 4.
If there is no monitored VSNK voltage, below are the possible reasons:
⚫
Type-C devices cannot be identified by the port as Sink or Source device. It is possible that the connected device is a
Sink device.
⚫
The connected Source device cannot meet the required power or voltage configured by PMIN or VMIN.
⚫
There may be a latched-off state that is caused by the overvoltage on the Source or the EVK side due to the inrush
current by the load connected on VSNK. The EVK has no countermeasures for inrush current so it is required for a
system to prevent it.
Please check both Figure 16 and Figure 17 to conform the correct behavior of the Type-C/PD connection.
(Connection examples and details)
Digital
Multimeter
Type-C Cable
Type-C Wall
Charger
BD93E11GWL-EVK-001
Figure 4. An evaluation for only EVK with Type-C cable
BD93E11GWL-EVK-001
Digital
Multimeter
Type-A to C
Cable
Type-A Wall
Charger
Type-A to C cable constrains
the current capability to USB
default. Therefore, a PD
contract cannot accomplish,
and the device connects by
Type-C.
Type-A to C Cable has
built-in Rp (56k
Ω
) in its
plug side.
Figure 5. An example of the connection with Type-A to C Cable
