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RTK00V2XRC7746SFS
3 Specifications of Interface Modules on the Tethys Board
This section describes the main function of the Tethys board, which includes the following sections:
3.1 Mode Setting
3.1.1
Specifications
The operating mode of the R-Car W2HR-Car W2H is set by a power-on reset. For details on the operating mode, see the
documents related to the R-Car W2HR-Car W2H operating mode specifications.
3.1.2
MD0 Pin -Selection of Free-Running Mode or Step-Up Mode
Do not change the initial setting at shipment (MD0=0).
3.1.3
MD [3:1] Pins-Selection of Boot Device
These pins select the boot device.
MD3
MD2
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
3.1.4
MD4 Pin-Selection of CS0 Space Size
This pin selects whether the area 0 space (CS0) is used as a normal space (64 Mbytes) or an expanded space (128 Mbytes).
MD4
Area Division
0
Area 0: 64 Mbytes
1
Area 0: 128 Mbytes
3.1.5
MD5 Pin-Reserved
Do not change the initial setting at shipment (MD5=1).
3.1.6
MD [7:6] Pins-Selection of Master Boot Processor
These pins select the master boot processor.
ASD-B-16-0247 Rev1.3
September 8, 2017
MD1
Selection of Boot Device
0
External ROM boot (area 0)
1
eMMC boot via SDHI1
0
Serial flash ROM boot via QSPI; 16Kbytes transferred at 48.75 MHz
1
Reserved
0
Serial flash ROM boot via QSPI; 16Kbytes transferred at 39 MHz
1
Reserved
0
Serial flash ROM boot via QSPI; 4 Kbytes transferred at 39 MHz
1
Reserved
Hardware Design Specification
Page 15 of 105
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