LSI Logic Confidential
Host Interface Registers
8-11
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
8.6
Host Interface Registers
The Host interface contains a set of seven 32-bit registers that are
accessed directly using address [2:0]. These registers configure the Host
interface for operation.
and
show the mapping of the Host Interface registers.
The mapping depends on the width of the data bus and the endian
setting. The H32 and BSSEP bits in the Host Control Register determine
whether the Host interface transfers bitstreams in Mode A
(Time-multiplexed 32-bit and DMA 32-bit I/O mode), Mode B
(Time-multiplexed16-bit and DMA 16-bit I/O mode), or Mode C (16-bit
and a separate 8-bit Primary Bitstream Port I/O mode)
The LE bit in the Host Control Register selects between big-endian and
little-endian byte ordering.
Table 8.2
Host Register Mapping (32 bits wide)
Address
Big Endian
Little Endian
DATA[31:16]
DATA[15:0]
DATA[31:16]
DATA[15:0]
0x0
Read: Version Register
Write: Ignored
Read: Host Control
Write: Host Control
Read: Version Register
Write: Ignored
Read: Host Control
Write: Host Control
0x1
Read: Version Register
Write: Ignored
Read: Host Control
Write: Ignored
Read: Version Register
Write: Ignored
Read: Host Control
Write: Ignored
0x2/0x3
Host Data Register [31:0]
Host Data Register [31:0]
0x4/0x5
Host Address Register [31:0]
Host Address Register [31:0]
0x6
Host DMA Data Register [31:0]
Host DMA Data Register [7:0, 15:8, 23:16,
31:24]
0x7
Reserved
Reserved
Содержание DMN-8600
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