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Hardware Design Specification
ASD-B-16-0247 Rev1.3
Page 29 of 105
September 8, 2017
RTK00V2XRC7746SFS
3.8
USB to UART
3.8.1
Specifications
The Tethys board incorporates three USB to UART bridges: One is connected to a mini PCIE connector, one is connected to
the R-Car W2H and another is connected to the MCU. Users can control and debug the Tethys board through the USB port.
Table 10 USB to UART Specifications
USB to UART IC
CP2102-GM from Silicon
USB function connector
47346-0001 from Molex x 3pcs
Common mode filter with ESD protection diode
PRTR5V0U2X from NXP x 3pcs
3.8.2
Block Diagram
R-car W2H
MCU
USB to UART
CP2102
Silicon
USB micro-B CN
CN10
USB to UART
CP2102
Silicon
USB micro-B CN
CN5
SCIF2
(debug)
USB to UART
CP2102
Silicon
USB micro-B CN
CN16
Mini PCI
Express CN
TE
ESD protection
PRTR5V0U2X
D22
ESD protection
PRTR5V0U2X
D24
ESD protection
PRTR5V0U2X
D23
Figure 8 Block Diagram of the USB to UART
USB controller
On-chip SCIF2(debug) function controller in the R-Car W2H, MCU
,
and Mini PCI express CN