LSI Logic Confidential
15-22
Serial I/O Port
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
IR2T
IR2 Transmit Mask
11
IR1R
IR1 Receive Mask
10
IR1T
IR1 Transmit Mask
9
UA2R
UART2 Receive Mask
8
UA2T
UART2 Transmit Mask
7
UA1R
UART1 Receive Mask
6
UA1T
UART1 Transmit Mask
5
SPR
SPI Receive Mask
2
SPT
SPI Transmit Mask
1
ACT
Action Bit
0
This bit is an action bit. The value of this bit is written to
any selected bits during register writes. Bits to be written
are selected by placing a 1 in each desired location as
the register is written. Any bit positions that contain a 0
during register writes remain unchanged.
This bit always reads back as 0.
SIO DMA Engine Interrupt Status Register (INTR_STATUS_ADDR)
Offset = 0xBF0104
Read/Write
Default = 0x0000 0000
Each DMA channel has 2 bits, one for each of the possible interrupts
(ch_intr1 or ch_intr2) for that DMA channel.
CH_INTR1/2
Channel Interrupt 1/2
22:1
Each DMA channel has two interrupt bits associated with
it:
Bit 1 indicates completion of the entire DMA operation—
that is, no DMA buffers are pending.
1 = Completed
31
23
22
21
20
19
18
17
16
RSVD
R2T2 R2T1 R1R2 R1R1 R1T2 R1T1 U2R2
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
U2R1 U2T2 U2T1 U1R2 U1R1 U1T2 U1T1
SPR2 SPR1 SPT2 SPT1
ACT
Содержание DMN-8600
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