Epson 5700i User Manual - Page 92

PeripheralLogicHigh, nlnit/nReverseRequest, nFault/nDataAvail/nPeriphRequest

Get Epson 5700i - EPL B/W Laser Printer PDF manuals and user guides
UPC - 010343818620
View all Epson 5700i manuals
Add to My Manuals
Save this manual to your list of manuals

Page 92 highlights

Reverse data transfer phase: In nibble mode, setting this signal low indicates to the printer that the host is ready to receive data. When this signal is subsequently set high, it indicates that the host received the data. Reverse idle phase: This signal is set high in response to a PtrClk (nAck) low pulse in order to return to the reverse data phase. If this signal is set high at the same time that IEEE 1284active (nSelectln) is set low, the IEEE 1284 idle phase is aborted and the interface returns to compatibility mode. ECP mode: Used for reverse direction flow control. Also used for handshaking via PeriphClk (nAck). NC Not used PeripheralLogicHigh Parallel B: NC Parallel C: Pull up to +5V with 3.9 KΩ nlnit/nReverseRequest Compatibility mode: When a low signal is detected, the printer is deemed to be BUSY until the low signal is released. Negotiation phase: Always high Reverse data transfer phase: Always high ECP mode: Low when switching to reverse direction. The peripheral device has permission to drive the data signals only when this signal is low and 1284 active is high. nFault/nDataAvail/nPeriphRequest Compatibility mode: Low signal indicates that an error occurred. A-10 Technical Specifications

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
A-10
Technical Specifications
Reverse data transfer phase: In nibble mode, setting this signal
low indicates to the printer that the host is ready to receive data.
When this signal is subsequently set high, it indicates that the host
received the data.
Reverse idle phase: This signal is set high in response to a PtrClk
(nAck) low pulse in order to return to the reverse data phase. If
this signal is set high at the same time that IEEE 1284active
(nSelectln) is set low, the IEEE 1284 idle phase is aborted and the
interface returns to compatibility mode.
ECP mode: Used for reverse direction flow control. Also used for
handshaking via PeriphClk (nAck).
NC
Not used
PeripheralLogicHigh
Parallel B: NC
Parallel C: Pull up to +5V with 3.9 K
Ω
nlnit/nReverseRequest
Compatibility mode: When a low signal is detected, the printer is
deemed to be BUSY until the low signal is released.
Negotiation phase: Always high
Reverse data transfer phase: Always high
ECP mode: Low when switching to reverse direction. The
peripheral device has permission to drive the data signals only
when this signal is low and 1284 active is high.
nFault/nDataAvail/nPeriphRequest
Compatibility mode: Low signal indicates that an error occurred.