LSI Logic Confidential
SIO Register Descriptions
15-43
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
CHEN again to resume the DMA operation. All state
information is preserved when DMA is paused, and the
DMA operation continues from where it left off.
CHEN is controlled by software. It must be cleared once
the DMA operation has finished. On reset, CHEN is 0.
IDC DMA Transmit Status Register (IDC_TX_STATUS_REG_ADDR)
Offset = 0xBE00C4
Read/Write
Default = 0x0000 0000
FLSTS
FIFO Flush Status
19
1 = The flushing of a particular DMA channel is complete.
Software must reset FLSTS by writing 0.
FLVLB
FIFO B Byte Count
[18:10]
This field shows the number of bytes currently held in
FIFO B.
FLVLA
FIFO A Byte Count
[9:1]
This field shows the number of bytes currently held in
FIFO A.
CHST
DMA Channel Status
0
1 = The DMA transfer operation has finished. CHST can
be cleared by writing 1 to it.
IDC DMA Transmit Address Pointer 1 Register (IDC_TX_ADDR_PTR1_ADDR)
Offset = 0xBE00C8
Read/Write
Default = 0x0000 0000
31
20
19
18
16
Reserved
FLSTS
FLVLB
15
10
9
1
0
FLVLB
FLVLA
CHST
31
28
27
16
Reserved
ADDR_PTR1
15
0
ADDR_PTR1