HD64570 Datasheet, PDF(53/469 Page) Hitachi Semiconductor – Serial Communications Adaptor

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HD64570 Datasheet, PDF (53/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

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MSCI

(channel 1)

MSCI

(channel 0)

DMAC

(channel 3)

DMAC

(channel 2)

DMAC

(channel 1)

DMAC

(channel 0)

Timer

(channel 3)

Timer

(channel 2)

Timer

(channel 1)

Timer

(channel 0)

Interrupt status register 0 (ISR0)

TXINT1

RXINT1

TXRDY1

INT (to MPU)

RXRDY1

TXINT0

INTA (from MP

RXINT0

TXRDY0

RXRDY0

Interrupt enable register 0 (IER0)

TXINT1E

RXINT1E

TXRDY1E

RXRDY1E

TXINT0E

RXINT0E

Hard-

ware-

gene-

rated

code

IMVR7

IMVR6

â

â

â

â

â

â

Interrupt modified

vector register

TXRDY0E

RXRDY0E

Interrupt status register 1 (ISR1)

DMIB3

DMIA3

DMIB2

DMIA2

DMIB1

DMIA1

DMIB0

Interrupt

control

(priority

decision

and

control)

IVR7

IVR6

IVR5

IVR4

IVR3

IVR2

IVR1

IVR0

Selec- Vector

tor

(to MPU

Interrupt

vector

registers

DMIA0

Interrupt enable register 1 (IER1)

DMIB3E

DMIA3E

DMIB2E

DMIA2E

DMIB1E

DMIA1E

DMIB0E

DMIA0E

Interrupt status register 2 (ISR2)

T3IRQ

T2IRQ

T1IRQ

T0IRQ

â

Acknowledge

â

cycle select

â

Priority select

â

Output vector select

Interrupt enable register 2 (IER2)

T3IRQE

T2IRQE

T1IRQE

T0IRQE

â

â

IPCIAK1IAK0VOS â â â â

765432 10

Interrupt control register (ITCR)

â

â

Figure 1.24 Interrupt Control

Rev. 0, 07/98, page 37 of 453

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