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AX88196 Datasheet(PDF) 12 Page - ASIX Electronics Corporation |
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AX88196 Datasheet(HTML) 12 Page - ASIX Electronics Corporation |
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12 / 42 page  AX88196 Local CPU BUS MAC Controller ASIX ELECTRONICS CORPORATION 12 2.3 EEPROM Signals Group SIGNAL TYPE PIN NO. DESCRIPTION EECS O 106 EEPROM Chip Select : EEPROM chip select signal. EECK O 107 EEPROM Clock : Signal connected to EEPROM clock pin. EEDI O 108 EEPROM Data In : Signal connected to EEPROM data input pin. EEDO I/PU 109 EEPROM Data Out : Signal connected to EEPROM data output pin. Tab - 3 EEPROM bus interface signals group 2.4 SNI Interface pins group SIGNAL TYPE PIN NO. DESCRIPTION STXC I 66 Transmit Clock : this signal is driven by PHY with 20MHz clock. STXD O 68 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. STXE O 70 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. SCOL I 76 Collision : this signal is driven by PHY when collision is detected. SRXC I 78 Receive Clock : SRXC is driven by PHY for received data synchronization. SRXD I 79 Receive Data : SRXD is driven by the PHY synchronously with respect to SRXC. SCRS I 80 Carrier Sense : Asynchronous signal SCRS is asserted by the PHY when either the transmit or receive medium is non-idle. /SLINK I/PU 74 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. Tab - 4 Serial Network Interface pins group 2.5 Standard Printer Port Interface pins group SIGNAL TYPE PIN NO. DESCRIPTION PD[7:0] I/O/PU 52, 53 55-58 60, 61 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 I 46 Busy : This is a status input from the printer, high indicating that the printer is not ready to receive new data. /ACK I 47 Acknowledge : A low active input from the printer indicating that it has received the data and is ready to accept new data. PE I 48 Paper Empty : A status input from the printer, high indicating that the printer is out of paper. SLCT I 50 Slect : This high active input from the printer indicating that it has power on. /ERR I 51 Error : A low active input from the printer indicating that there is an error condition at the printer. /SLCTIN O 41 Slect In : This active low output selects the printer. /INIT O 42 Init : This signal is used to initiate the printer when low. /ATFD O 43 Auto Feed :This output goes low to cause the printer to automatically |
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