LSI Logic Confidential
SIO Register Descriptions
15-57
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
ADDR_PTR1 Address Pointer 1
27:0
In double-buffer mode, this register indicates the Base
Address for the “next” SDRAM buffer about to be trans-
ferred.
Note:
The maximum size for each SDRAM buffer transfer is 511
bytes. Therefore, the difference between ADDR_PTR2 and
ADDR_PTR1 should not exceed 511.
IR1 DMA Transmit Address Pointer2 Register (IR_TX_ADDR_PTR2_ADDR)
IR2 DMA Transmit Address Pointer2 Register (IR2_TX_ADDR_PTR2_ADDR)
Offset = 0xBF004C / 0xBF00CC
Read/Write
Default = 0x0000 0000
ADDR_PTR2 Address Pointer 2
27:0
In double-buffer mode, this register indicates the End
Address for the “next” SDRAM buffer about to be trans-
ferred.
Note:
The maximum size for each SDRAM buffer transfer is 511
bytes. Therefore, the difference between ADDR_PTR2 and
ADDR_PTR1 should not exceed 511.
IR1 DMA Transmit Address Pointer3 Register (IR_TX_ADDR_PTR3_ADDR)
IR2 DMA Transmit Address Pointer3 Register (IR2_TX_ADDR_PTR3_ADDR)
Offset = 0xBF0050 / 0xBF00D0
Read/Write
Default = 0x0000 0000
31
28
27
16
RSVD
ADDR_PTR2
15
0
ADDR_PTR2
31
28
27
16
RSVD
ADDR_PTR3
15
0
ADDR_PTR3
Содержание DMN-8600
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