Pcmciactrl – Cirrus Logic EP93xx User Manual
Page 494
12-16
DS785UM1
Copyright 2007 Cirrus Logic
Static Memory Controller
EP93xx User’s Guide
1
2
1
2
12
0 - 8-bit wide Common space
1 - 16-bit wide Common space
AI:
IO Space Access time - Read/Write
The value written to this field specifies the minimum
‘number of HCLK cycles, minus 1’ that the data strobe,
MCDAENn
,
is asserted during a Read or Write access.
The data strobe assertion time is specified by (AI+1)
HCLK cycles. For example, if AI = 0x10, the data strobe
assertion time is 16 + 1 = 17 cycles of HCLK
HI:
IO space Hold time - Read/Write
The value written to this field specifies the minimum
‘number of HCLK cycles, minus 1’ between de-asserting
the data strobe, MCDAENn
,
and de-asserting the address
strobe, MCADENn.
The Hold time is specified by (HI +1) HCLK cycles. For
example, if HI = 0xC, the Hold time is 12 + 1 = 13 cycles of
HCLK.
PI:
IO space setup time - Read/Write
The value written to this field specifies the ‘number of
HCLK cycles, minus 1’ that the address strobe,
MCADENn, is set up before assertion of the data strobe,
MCDAENn.
The Setup time is specified by (PI+1) HCLK cycles. For
example, if PI = 0x25, the Setup time is 37 + 1 = 38 cycles
of HCLK.
PCMCIACtrl
Address: 0x8008_0040 - Read/Write
Default: 0x0000_0000
Definition: PC Card Control register
Bit Descriptions:
RSVD:
Reserved - Unknown During Read
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
RSVD
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RSVD
WEN
RSVD
PCRST
RSVD
PCEN