LSI Logic Confidential
15-84
Serial I/O Port
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
Offset = 0xBE0104 / 0xBE0184
Read/Write
Default = 0x0000 0000
This register enables the sources of interrupts in the UART to interrupt
the SPARC processor. Each of the sources of interrupts can be
individually enabled/disabled. Disabling an interrupt does not raise the
interrupt signal to the SPARC processor from that particular source of
interrupt. The setting of interrupt source bits is independent of the
Interrupt Enable Register’s bits.
MSE
Modem Status Interrupt Enable
27
1 = Enable the modem status interrupt source to activate
the interrupt signal of the UART module. This source is
the DCTS bit in the Modem Status Register.
RLSE
Receiver Line Status Interrupt Enable
26
1 = Enable the receiver line status interrupt sources to
activate the interrupt signal of the UART module. These
sources are the OE, PE, FE, and BI bits in the Line Sta-
tus Register.
THREE
Transmit Holding Register Empty Interrupt Enable 25
1 = Enable the THRE bit in the Line Status Register to
activate the interrupt signal of the UART.
RDRE
Receiver Data Ready Interrupt Enable
24
1 = Enable the DR bit in the Line Status Register to acti-
vate the interrupt signal of the UART. The RDRE bit also
enables the trigger level interrupt and the time-out inter-
rupt.
31
28
27
26
25
24
23
16
RSVD
MSE
RLSE THREE RDRE
RSVD
15
0
RSVD
Содержание DMN-8600
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