Renesas RX71M, Руководство пользователя, Страница: 25 / 72

RSK+RX71M 5. User Circuitry
R20UT3217EG0100 Rev. 1.00 Page 25 of 71
Jan 23, 2015
5.12 External Bus
The RX71M features an external data bus, which is connected to various devices on the RSK+ board. Details
of the devices connected to the external data bus are listed in
Table 5-13 below. Further details of the devices
connected to the external bus can be found in the board schematics.
Chip Select Device Name Device Description Address Space
CS0 JA3 Application Header FF000000h to FFFFFFFFh (16Mbytes)
SDCS U12 128MBit SDRAM 08000000h to 0FFFFFFFh (128Mbytes)
JA3 Application Header 08000000h to 0FFFFFFFh (128Mbytes)
CS1 to CS3 - Unused 05000000h to 07FFFFFFh (3 x 16Mbytes)
CS4 JA3 Application Header 04000000h to 04FFFFFFh (16Mbytes)
CS5 to CS7 - Unused 01000000h to 03FFFFFFh (3 x 16Mbytes)
Table 5-13: External Bus Address Space
5.13 Renesas Serial Peripheral Interface (RSPI)
The RX71M features one Renesas Serial Peripheral Interface modules (Renesas SPI or RSPI).
Table 5-14
below details the connected devices, and their connections to the MCU.
Slave Select Device Name Device Description
SSLA1-A U7 SPI Serial Flash, 32Mbits
Table 5-14: RSPI Connections
5.14 Quad Serial Peripheral Interface (QSPI)
The RX71M features one Quad Serial Peripheral Interface modules (QSPI).
Table 5-15 below details the
connected devices, and their connections to the MCU.
Slave Select Device Name Device Description
QSSL-A (BD_QSSL-A) U8 SPI Serial Flash, 32Mbits
QSSL-A (TFT_QSSL-A) TFT LCD Direct Drive Header
Table 5-15: QSPI Connections
5.15 I
2
C Bus (Inter-IC Bus)
The RX71M features two I
2
C (Inter-IC Bus) interface modules. RIIC2 is connected to a 16Kbit EEPROM
(Electronically-Erasable Programmable Read Only Memory). Specific details of the EEPROM device and the
connections can be found in the board schematics.
On board EEPROM only supports single device on bus. To allow external I
2
C device, option links have to be modified –
refer to §6 for further details.