LSI Logic Confidential
Host Interface Registers
8-13
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
If H32 is set, then bits [31:24] of the host DMA data
register are swapped with [7:0] and bits [23:16] are
swapped with [15:8].
If H32 is not set, then bits [15:8] are swapped with [7:0].
If H32 and LE are not set, then the least significant half
of the host address register is at host address 0x5 and
the most significant half is at address 0x4.
If H32 is not set and LE is set, the least significant half is
at host address 0x4 and the most significant half at
address 0x5.
If H32 and LE are not set, then the least significant half
of the host data register is at host address 0x3 and the
most significant half is at address 0x2.
If H32 is not set and LE is set, the least significant half is
at host address 0x2 and most significant half at address
0x3.
1 = Host DMA transfers between SDRAM and the Host
DMA Data Register are byte swapped.
0 = They are not swapped.
H32
H32
11
A read/writable bit that is set by the host processor if host
slave transfers are 32 bits wide, and cleared if host
transfers are 16-bits wide. If H32 is set, host DMA
transfers are 32-bit wide host DMA targets. If H32 is
clear, then host DMA transfers are 16-bit wide host DMA
targets.
1 = Host transfers are 32-bits wide.
0 = Host transfers are 16-bits wide or a separate 8-bit
data port.
IOE
Interrupt Output Enable
9
A read/writable bit that is the active-high output enable for
the Host Interrupt pin. The Host Interrupt pin is an
open-drain signal that is active LOW. Hence, setting this
bit results in a 0 being driven onto the INT pin. This
enable bit must be reset to 0.
VDSP
VDSP Reset
8
A self clearing writable bit that resets the DMN-8600
Video DSP including the instruction and result queues.
Содержание DMN-8600
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