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695
IEEE 1284 Peripheral Controller
Register bit assignment
Feature Control Register B

Address: 9040 0118

You must set bit[0] to 1 in Feature Control Register B. Bits[31:01] are reserved.

Interrupt Enable register

Address: 9040 011C

The Interrupt Enable register enables interrupts to be generated on certain

conditions.

Register bit assignment
Bits Access Mnemonic Reset Description
D31:01 N/A Reserved N/A N/A
D00 R/W PPtEn 0x0 Printer port enable
0 Force IEEE 1284 outputs to high
impedance
1 Enable normal operation, depending on
mode

Table 403: fea — Feature Control Register A

Bits Access Mnemonic Reset Description
D31:06 N/A Reserved N/A N/A

Table 404: fei — Interrupt Enable register

PSInt
13121110987654321015 14
31 29 28 27 26 25 24 23 22 21 20 19 18 17 1630
Reserved
Reserved Neg
Start
Trnsfr
Start
ECPCh
Addr Reserved