Tektronix Phaser 540 Plus, Руководство пользователя

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A
Technical Notes
A-12
Phaser 540 Color Printer
11 Data 6 29 Host C mode:
N mode:
Positive true data input
Not used
12 Data 7 30 Host C mode:
N mode:
Positive true data input
Not used
13 Data 8 31 Host C mode:
N mode:
Positive true data input
Not used
14 nInit/nHostRTS 32 Host C mode:
N mode:
Negative true = reset
interface
Not used
15 nStrobe/HostClk 33 Host C mode:
N mode:
Negative true = transfer
data into printer input
latch on rising edge
Negative true = transfer
Extensibility Request
value into printer input
latch on rising edge
16
nSelectIn/1284 Active
34 Host C mode:
N mode:
Negative true = select
printer
Used in conjunction with
HostBusy for 1284
hardware handshaking
17
nAutoFd/HostBusy
35 Host C mode:
N mode:
Not used
Used in conjunction with
1284 Active for 1284
hardware handshaking
18 Host Logic High Host Positive true = host signals valid
Negative true = host signals invalid
36 Peripheral Logic High Printer Positive true = printer on
Negative true = printer off
Parallel port signal descriptions (cont’d.)
Pin Signal mode names:
Compatibility/Nibble Return
pin Signal
source Description