Epson 5700i User Manual - Page 89

nStrobe/HostClk, DATA1 to DATA8 bidirectional, but may always be an input if

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Pin No. 18 19 - 30 31 32 33 34 35 36 Direction OUT IN OUT OUT IN IEEE 1284-B connector Compatibility Nibble ECP PeripheralLogicHigh GND nlnit nReverse Request nFault nDataAvail nPeriphRequest GND NC +5V nSelectln IEEE1284 Active Note: A The column heading "Direction" refers to the direction of signal flow in to or out of the printer. nStrobe/HostClk Compatibility mode: Latch pulse used to read in print data. When low, DATA is valid Negotiation phase: Latch pulse used to read in extensibility request values Nibble mode: Always high ECP mode: Used to transfer data and addresses from the host to the printer with handshaking via PeriphAck (Busy) DATA1 to DATA8 (bidirectional, but may always be an input if ECP or EPP mode is not supported) Compatibility mode: Forward channel data Negotiation phase: Extensibility request value Technical Specifications A-7

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A
Technical Specifications
A-7
Note:
The column heading ”Direction” refers to the direction of signal flow in
to or out of the printer.
nStrobe/HostClk
Compatibility mode: Latch pulse used to read in print data. When
low, DATA is valid
Negotiation phase: Latch pulse used to read in extensibility
request values
Nibble mode: Always high
ECP mode: Used to transfer data and addresses from the host to
the printer with handshaking via PeriphAck (Busy)
DATA1 to DATA8 (bidirectional, but may always be an input if
ECP or EPP mode is not supported)
Compatibility mode: Forward channel data
Negotiation phase: Extensibility request value
18
OUT
PeripheralLogicHigh
19 - 30
GND
31
IN
nlnit
nReverse
Request
32
OUT
nFault
nDataAvail
nPeriphRequest
33
GND
34
NC
35
OUT
+5V
36
IN
nSelectln
IEEE1284 Active
Pin No.
Direction
IEEE 1284-B connector
Compatibility
Nibble
ECP