HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 97

• Manufacturer Part Number: HD64570
• Description: Serial Communications Adaptor
• Manufacturer: HITACHI [Hitachi Semiconductor]

4.1
The SCA has a single INT signal line for sending interrupt requests to a host MPU. The INT
signal is generated by 20 interrupt sources on the SCA chip. Figure 4.1 shows the location of these
interrupt sources in the SCA's functional modules.
Overview
(channel 0)
(channel 1)
(channel 0)
(channel 1)
(channel 2)
(channel 3)
(channel 0)
(channel 1)
(channel 2)
(channel 3)
DMAC
DMAC
DMAC
DMAC
MSCI
MSCI
Timer
Timer
Timer
Timer
Section 4 Interrupt Controller
Figure 4.1 Interrupt Sources
RXRDY0
TXRDY0
RXINT0
TXINT0
RXRDY1
TXRDY1
RXINT1
TXINT1
DMIA0
DMIB0
DMIA1
DMIB1
DMIA2
DMIB2
DMIA3
DMIB3
T0IRQ
T1IRQ
T2IRQ
T3IRQ
Interrupt
decision
interrupt
(priority
control)
enable/
disable
control
and
Rev. 0, 07/98, page 81 of 453
INT
INTA