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697
IEEE 1284 Peripheral Controller
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
13121110987654321015 14
31 29 28 27 26 25 24 23 22 21 20 19 18 17 1630
Reserved
Reserved
Rsvd
Auto
Neg
Reserved