Fujitsu MB90390 Series Hardware Manual page 396

CHAPTER 20 UART2, UART3
■ UART2, UART3 EI
UART2, UART3 has a circuit for operating EI
transmission interrupts.
●
For UART2 Reception
UART2 shares the interrupt registers with the UART2 transmission interrupts and with UART3 reception
and transmission interrupts. Therefore, EI
interrupts and no UART3 reception or transmission interrupts are used.
●
For UART2 Transmission
UART2 shares the interrupt registers with the UART2 reception interrupts and with UART3 reception and
transmission interrupts. Therefore, EI
no UART3 reception or transmission interrupts are used.
●
For UART3 Reception
UART3 shares the interrupt registers with the UART3 transmission interrupts and with UART2 reception
and transmission interrupts. Therefore, EI
interrupts and no UART2 reception or transmission interrupts are used.
●
For UART3 Transmission
UART3 shares the interrupt registers with the UART3 reception interrupts and with UART2 reception and
transmission interrupts. Therefore, EI
no UART2 reception or transmission interrupts are used.
368
2
OS Functions
2
OS, which can be started up for either reception or
2
OS can be started up only when no UART2 transmission
2
OS can be started up only when no UART2 reception interrupts and
2
OS can be started up only when no UART3 transmission
2
OS can be started up only when no UART3 reception interrupts and