7906 datasheet(256/531 Pages) RENESAS

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SERIAL I/O

7906 Group User’s Manual Rev.2.0

11-15

11.2.7 UARTi transmit interrupt control and UARTi receive interrupt control registers

When using UARTi, 2 types of interrupts (UARTi transmit and UARTi receive interrupts) can be used. Each

interrupt has its corresponding interrupt control register. Figure 11.2.12 shows the structure of UARTi

transmit interrupt control and UARTi receive interrupt control registers.

For details about these interrupts, refer to “CHAPTER 6. INTERRUPTS.”

For the UARTi receive interrupt, a receive or receive error interrupt can be selected by the UARTi receive

interrupt mode selected bit (bit 5 at addresses 3416, 3C16).

11.2 Block description

Fig. 11.2.12 Structure of UARTi transmit interrupt control and UARTi receive interrupt control registers

UART0 transmit interrupt control register (Address 7116)

UART0 receive interrupt control register (Address 7216)

UART1 transmit interrupt control register (Address 7316)

UART1 receive interrupt control register (Address 7416)

b7 b6 b5 b4 b3 b2 b1 b0

7 to 4

Interrupt priority level select bits

Interrupt request bit

Nothing is assigned.

Note: When writing to this bit, use the MOVM (MOVMB) or STA (STAB, STAD) instruction.

0 0 0 : Level 0 (Interrupt disabled)

0 0 1 : Level 1

0 1 0 : Level 2

0 1 1 : Level 3

1 0 0 : Level 4

1 0 1 : Level 5

1 1 0 : Level 6

1 1 1 : Level 7

b2 b1 b0

0 : No interrupt requested

1 : Interrupt requested

Undefined

(Note)

—

Bit name

Bit

Function

At reset

R/W

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