F84045 Asiliant Technologies, F84045 Datasheet - Page 52

• Manufacturer Part Number: F84045
• Manufacturer: Asiliant Technologies

Specifications of F84045

• Lead Free Status / Rohs Status: Not Compliant

Index
42
43
44
Typical Settings:
Revision 1.0
Index
40
41
42
43
1:0
3:2
5:4
7:6
0
1
2
3
4:7
3:0
7:4
tim drv3:0
tim drv7:4
misc IDE
Function
Bits
IDE Drive 0:3 Timing mode.
Drive 0 Timing Mode (First IDE connector Drive 0)
Drive 1 Timing Mode (First IDE connector Drive 1)
Drive 2 Timing Mode (Second IDE connector Drive 0)
Drive 3 Timing Mode (Second IDE connector Drive 1)
IDE Drive 4:7 Timing mode.
Drive 4 Timing Mode (Third IDE connector, Drive 0)
Drive 5 Timing Mode (Third IDE connector, Drive 1)
Drive 6 Timing Mode (Fourth IDE connector, Drive 0)
Drive 7 Timing Mode (Fourth IDE connector, Drive 1)
(Reserved)
IDE Timing A Read and Write pulse Widths
Read Pulse Width for Timing A. Selects 1 to 16 CPU clocks (1x) for the IDEIOR pulse width on data
Write Pulse Width for Timing A. Selects 1 to 16 CPU clocks (1x) for IDEIOW pulse width on data
*IDE Mode 2 (with 2Ch instead of 25h) may be optimum for many existing IDE drives, but the drive
specifications should always be checked before using the modes listed above.
2/10/95
-
port reads.
port writes. Encoding is the same as reads.
forceDefault
drv3sped1
00
01
10
11
0
1
0000
0001
0010
0011
D7
-
Description
Use Timing Mode A
Use Timing Mode B
(Reserved)
ISA bus cycles are used for the data port (use for slow or 8 bit drives).
Use Timing Mode A
Use Timing Mode B
16
1
2
3
UseSBHE
drv3sped0
D6
-
Subject to change without notice
IDE Mode
“0”
“1”
“2”
“3”
“4”
drv2sped1
datahold
D5
-
0100
0101
0110
0111
Typical setting = F4h for 2 local IDE connectors.
Typical setting = 55h.
44h (46h)
66h
55h
44h
33h
33h
drv2sped0
51
tstatestart
4
5
6
7
D4
-
25h or 2Ch*
45h (47h)
3Ch
29h
23h
11h
drv1sped1
drv7sped
ideen76
D3
-
1000
1001
1010
1011
drv1sped0
drv6sped
ideen54
D2
8
9
10
11
-
drv0sped1
drv5sped
ideen32
Configuration Registers
Preliminary
D1
-
1100
1101
1110
1111
drv0sped0
drv4sped
ideen10
D0
-
12
13
14
15
CS4041