AX88196
Local CPU BUS MAC Controller
2.3 EEPROM Signals Group
SIGNAL
EECS
EECK
EEDI
TYPE
O
O
O
I/PU
PIN NO.
106
DESCRIPTION
EEPROM Chip Select : EEPROM chip select signal.
EEPROM Clock : Signal connected to EEPROM clock pin.
EEPROM Data In : Signal connected to EEPROM data input pin.
EEPROM Data Out : Signal connected to EEPROM data output pin.
107
108
109
EEDO
Tab - 3 EEPROM bus interface signals group
2.4 SNI Interface pins group
SIGNAL
STXC
STXD
STXE
TYPE
I
O
PIN NO.
DESCRIPTION
66
68
Transmit Clock : this signal is driven by PHY with 20MHz clock.
Transmit Data : STXD is transition synchronously with respect to the
rising edge of STXC. For each STXC period in which STXE is
asserted, STXD is accepted for transmission by the PHY.
Transmit Enable : STXE is transition synchronously with respect to
the rising edge of STXC. STXE indicates that the port is presenting
data on STXD for transmission.
O
70
SCOL
SRXC
I
I
76
78
Collision : this signal is driven by PHY when collision is detected.
Receive Clock : SRXC is driven by PHY for received data
synchronization.
SRXD
SCRS
I
I
79
80
74
Receive Data : SRXD is driven by the PHY synchronously with respect
to SRXC.
Carrier Sense : Asynchronous signal SCRS is asserted by the PHY
when either the transmit or receive medium is non-idle.
Link indicator : Active low indicate the SNI interface is link to
network. When SNI is not used must keep the pin no connection or
pull high the signal.
/SLINK
I/PU
Tab - 4 Serial Network Interface pins group
2.5 Standard Printer Port Interface pins group
SIGNAL
PD[7:0]
TYPE
I/O/PU
PIN NO.
52, 53
55-58
60, 61
46
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.
BUSY
/ACK
PE
I
I
I
I
I
47
48
50
51
SLCT
/ERR
/SLCTIN
/INIT
/ATFD
O
O
O
41
42
43
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
12
ASIX ELECTRONICS CORPORATION
ASIX [ ASIX ELECTRONICS CORPORATION ]
