AX88796L データシートの表示（PDF） - Unspecified
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AX88796L Datasheet PDF : 71 Pages
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AX88796 L
3-in-1 Local Bus Fast Ethernet Controller
2.6 Standard Printer Port (SPP) Interface pins group (Optional)
SIGNAL
PD[7:5]
PD[4:0]
BUSY
/ACK
PE
SLCT
/ERR
/SLCTIN
/INIT
/ATFD
/STRB
TYPE
I/O/PD
I/O/PU
I/PU
I/PU
I/PU
I/PU
I/PU
O
O
O
O
PIN NO.
102 – 100
99 - 95
108
107
106
103
113
112
111
110
109
DESCRIPTION
Parallel Data :The bi-directional parallel data bus is used to transfer
information between CPU and peripherals. Default serve as input,
using /DOE bit of register offset x1Ah to set the direction.
Busy : This is a status input from the printer, high indicating that the
printer is not ready to receive new data.
Acknowledge : A low active input from the printer indicating that it
has received the data and is ready to accept new data.
Paper Empty : A status input from the printer, high indicating that the
printer is out of paper.
Slect: This high active input from the printer indicating that it has
power on.
Error : A low active input from the printer indicating that there is an
error condition at the printer.
Slect In: This active low output selects the printer.
Init: This signal is used to initiate the printer when low.
Auto Feed :This output goes low to cause the printer to automatically
feed one line after each line is printed.
Strobe : A low active pulse on this output is used to strobe the print
data into the printer.
Tab - 6 Standard Printer Port Interface pins group
2.7 General Purpose I/O pins group
Signal Name
GPI[2]/SPD
GPI[1]/DPX
Type
I/PU
I/PU
GPI[0]/LINK
I/PU
GPO[0]
O
Pin No.
113
106
103
120
Description
Read register offset 17h bit 6 value reflects this input value.
When MII port is selected. Read register offset 17h bit 5 value reflects
this input value.
When SPP port is selected. The pin is defined as PE.
When MII port is selected. Read register offset 17h bit 4 value reflects
this input value.
When SPP port is selected. The pin is defined as SLCT.
Default “1”. The pin reflects write register offset 17h bit 0 inverted
value.
Tab - 7 General Purposes I/O pins group
15
ASIX ELECTRONICS CORPORATION
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