参数资料
型号: ST78C36ACJ44-F
厂商: Exar Corporation
文件页数: 8/27页
文件大小: 0K
描述: IC UART FIFO 16B 44PLCC
标准包装: 27
特点: *
FIFO's: 16 字节
规程: 打印机
电源电压: 5V
带并行端口:
安装类型: 表面贴装
封装/外壳: 44-LCC(J 形引线)
供应商设备封装: 44-PLCC(16.59x16.59)
包装: 管件
TABLE 8: “EPP MODE” SIGNAL DESCRIPTIONS
SIGNAL NAME SIGNAL TYPE
EPP MODE
NAME
DESCRIPTION
-STROBE
O
-Write
Active low. Indicates a write operation, high for a read cycle
-AUTOFD
O
-DataStb
Active low. Indicates a Data-Read or Data-Write operation is in process.
-SLCTIN
O
-AddrStb
Active low. Indicates an Address-Read or Address-Write operation is in
process.
INIT
O
-Reset
Active low. Peripheral reset.
-ACK
I
-Intr
Peripheral interrupt. Used to generate an interrupt to the host.
BUSY
I
-Wait
Handshake signal. When low it indicates that is okay to start a cycle, when
high it indicates that it is okay to end the cycle.
PE
I
User defined
SLCT
I
User defined
-ERROR
I
User defined
PD0-PD7
O
AD0-AD7
Bi-directional address / data lines.
ST78C36/36A
16
ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO
REV. 5.1.0
5.2
EPP Mode Data Transfer Cycle
Program executes an I/O write cycle to EPP Data Port-4.
The -Write line is asserted and the data is output to the parallel port.
The -DataStb is asserted, since -Write is asserted low.
The port waits for the acknowledge from the peripheral, -Write deasserted.
The -DataStr is deasserted and EPP cycle ends.
-Write is asserted low to indicate that the next cycle may begin.
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