Hardware Design Specification
ASD-B-16-0247 Rev1.3
Page 47 of 105
September 8, 2017
RTK00V2XRC7746SFS
3.18
External Interrupts
3.18.1
Specifications
The R-Car W2H has external interrupt input pins which are NMI, GP4_22, GP4_23, GP4_24, GP4_25, and GP5_8. For details on the
external interrupts, please refer to the R-Car W2H Hardware Manual.
The Tethys board uses NMI as external interrupt input pin, GP4_22, GP4_23, GP4_24, GP4_25, and GP5_8 as GPIO interrupts.
These pins should be used as active-low signals in programs.
The devices and connectors of the interrupt request sources on the Tethys board are shown below table 24.
Table 24 External Interrupts Specifications
Interrupt Pin
Other pin function
Devices that Output Interrupt Request
Connectors
NMI
——
Test point
TP5
——
GP4_22
RX3_A/SCL1_C/MSIOF1_RXD_B
/AUDIO_CLKA_C/SSI_SDATA4_B
GYRO
U28 A3G4250D from ST
——
GP4_23
TX3_A/SDA1_C/MSIOF1_TXD_B
/AUDIO_CLKB_C/SSI_WS4_B
GP4_24
SCL2_A/MSIOF1_SCK_B
/AUDIO_CLKC_C/SSI_SCK4_B
G-SENSOR
U30 AIS328DQ from ST
——
GP4_25
SDA2_A/MSIOF1_SYNC_B
/AUDIO_CLKOUT_C
GP5_8/IRQS#
SSI_SDATA7_A/
AUDIO_CLKA_D/CAN_CLK_D
ETHERNET
KSZ8041RNLI from Micrel
——
3.18.2
Block Diagram
U1
R-Car W2H
NMI
D3.3V
TP5
Test point
GP4_22
GP4_23
U28
GYRO
A3G4250D
0
0
GP4_24
GP4_25
0
0
U30
G-SENSOR
AIS328DQ
GP5_8/IRQ8#
0
U16
ETHERNET
KSZ8041RNLI
10K
D3.3V_ETH
Figure 19 Block Diagram of the External Interrupts