HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 112
HD64570
Manufacturer Part Number
HD64570
Description
Serial Communications Adaptor
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet
1.HD64570.pdf
(469 pages)
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4.2.9
The interrupt enable register 2 enables or disables interrupt requests indicated in interrupt status
register 2 (ISR2). IER2 bits 7 to 4 are cleared to 0 at a reset. Bits 3 to 0 are reserved bits that
always read 0. When writing to IER2, write 0 in bits 3 to 0.
Bit 7 (T3IRQE: Timer Channel 3 Interrupt Request Enable):
T3IRQE = 0: The timer channel 3 T3IRQ interrupt is disabled.
T3IRQE = 1: The timer channel 3 T3IRQ interrupt is enabled.
Bit 6 (T2IRQE: Timer Channel 2 Interrupt Request Enable):
T2IRQE = 0: The timer channel 2 T2IRQ interrupt is disabled.
T2IRQE = 1: The timer channel 2 T2IRQ interrupt is enabled.
Rev. 0, 07/98, page 96 of 453
Interrupt Enable Register 2 (IER2)
Timer channel 3
interrupt request enable
0: Disabled
1: Enabled
Timer channel 2
interrupt request enable
0: Disabled
1: Enabled
Read/Write
Initial value
Bit name
Note: Initial values are the values after a hardware reset.
T3IRQE T2IRQE T1IRQE
R/W
7
0
R/W
6
0
R/W
5
0
T0IRQE —
R/W
4
0
3
—
0
Timer channel 0
interrupt request enable
0: Disabled
1: Enabled
Timer channel 1
interrupt request enable
0: Disabled
1: Enabled
—
2
—
0
1
—
—
0
—
—
0
0
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