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AX88796 数据表(PDF) 39 Page - ASIX Electronics Corporation

部件名 AX88796
功能描述  3-in-1 Local Bus Fast Ethernet Controller
PDF  71 Pages
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制造商  ASIX [ASIX Electronics Corporation]
网页  http://www.asix.com.tw
标志 ASIX - ASIX Electronics Corporation

AX88796 数据表(HTML) 39 Page - ASIX Electronics Corporation

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ASIX ELECTRONICS CORPORATION
39
AX88796 L
3-in-1 Local Bus Fast Ethernet Controller
5.1.17 SPP Data Port Register (SPP_DPR) Offset 18H (Read/Write)
FIELD
NAME
DESCRIPTION
7:0
DP
Printer Data Port. Default is in input mode. Write /DOE of SPP_CPR register to logic “0”
to enable print data output to printer as bi-directional mode.
5.1.18 SPP Status Port Register (SPP_SPR) Offset 19H (Read)
FIELD
NAME
DESCRIPTION
7
/BUSY
Reading a ‘0’ indicates that the printer is not ready to receive new data.
The register reflects the inverted value of BUSY pin.
6
/ACK
Reading a ‘0’ indicates that the printer has received the data and is ready to accept new data.
The register reflects the value of /ACK pin.
5
PE
Reading a ‘1’ indicates that the printer is out of paper.
The register reflects the value of PE pin.
4
SLCT
Reading a ‘1’ indicates that the printer has power on.
The register reflects the value of SLCT pin.
3
/ERR
Reading a ‘0’ indicates that there is an error condition at the printer.
The register reflects the value of /ERR pin.
2:0
-
Reserved
5.1.19 SPP Command Port Register (SPP_CPR) Offset 1AH (Read/Write)
FIELD
NAME
DESCRIPTION
7:6
-
Reserved
5
/DOE
Setting to ‘0’ enables print data output to printer. Default sets to ‘1’.
4
IRQEN IRQ enable : printer port interrupt is not supported.
3
SLCTIN Setting to ‘1’ selects the printer.
/SLIN pin reflects the inverted value of this signal.
2
/INIT
Setting to ‘0’ initiates the printer
/INIT pin reflects the value of this signal.
1
ATFD
Setting to ‘1’ causes the printer to automatically feed one line after each line is printed.
/ATFD pin reflects the inverted value of this signal.
0
STRB
Setting a low-high-low pulse on this register is used to strobe the print data into the printer.
/STRB pin reflects the inverted value of this signal.



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