LSI Logic Confidential
15-98
Serial I/O Port
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.
UART1 DMA Transmit Address Pointer2 Register (UART1_TX_ADDR_PTR2_ADDR)
UART2 DMA Transmit Address Pointer2 Register (UART2_TX_ADDR_PTR2_ADDR)
Offset = 0xBE014C / 0xBE01CC
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.
UART1 DMA Transmit Address Pointer3 Register (UART1_TX_ADDR_PTR3_ADDR)
UART2 DMA Transmit Address Pointer3 Register (UART2_TX_ADDR_PTR3_ADDR)
Offset = 0xBE0150 / 0xBE01D0
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