Master enable register – Digi NS9750 User Manual
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I E E E 1 2 8 4 P e r i p h e r a l C o n t r o l l e r
Master Enable register
Address: 9040 0120
The Master Enable register enables different IEEE 1284 modes and automatic transfer
modes.
Note:
Set both AutoTransfer and AutoNegotiate to enable hardware to control
the 1284 peripheral interface signals.
Register bit assignment
Bits
Access
Mnemonic
Reset
Description
D31:07
N/A
Reserved
N/A
N/A
D06
R/W
ECP
0x0
ECP mode
0
Disable
1
Enable
D05
R/W
SPP–PS2
0x0
SPP–PS2 mode
0
Disable
1
Enable
D04
R/W
AutoTransfer
0x0
Auto transfer mode
0
Disable
1
Enable
D03
N/A
Reserved
N/A
N/A
D02
R/W
AutoNegotiate
0x0
Auto negotiate mode
0
Disable
1
Enable
D01:00
N/A
Reserved
N/A
N/A
Table 405: fem — Master enable register
ECP
SPP-
PS2
Auto
Trnsfr
13
12
11
10
9
8
7
6
5
4
3
2
1
0
15
14
31
29
28
27
26
25
24
23
22
21
20
19
18
17
16
30
Reserved
Reserved
Rsvd
Auto
Neg
Reserved