LSI Logic Confidential
8-12
Host Slave Interface
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
8.6.1
Host Interface Control Register
This 16-bit wide register at Host space address 0x0 and CBus address
0x60000 specifies configuration and Host control information. It is
accessible by both H_ADDR[2:0] and the CBus address listed above.
After reset, all bits in the Host Configuration Register are reset to zero.
In 32-bit mode, this register occupies the lower 16 data bits when the
external host accesses either register ADR = 0x0 or ADR = 0x1.
Host Control Register
Address: 0x0 (Host space)
0x60000 (CBus)
LE
LE (Little Endian)
12
If LE is set, then host DMA transfers between SDRAM
and the host DMA data register are byte swapped, other-
wise they are not swapped.
Table 8.3
Host Register Mapping (16 bits wide)
Address
Big Endian: DATA[15:0]
Little Endian: DATA[15:0]
0x0
Host Control Register
Host Control Register
0x1
Version Register (Ignore Writes)
Version Register (Ignore Writes)
0x2
Host Data Register [31:16]
Host Data Register [15:0]
0x3
Host Data Register [15:0]
Host Data Register [31:16]
0x4
Host Address Register [31:16]
Host Address Register [15:0]
0x5
Host Address Register [15:0]
Host Address Register [31:16]
0x6
DMA Data Register [15:0]
DMA Data Register [7:0, 15:8]
0x7
Reserved
Reserved
31
16
Reserved
15
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved
LE H32 Res
IOE
VDSP
Vdeb
Verr
Vrst
Sdeb
Serr
Srst
CRst
WrD