参数资料
型号: ST78C36ACJ44-F
厂商: Exar Corporation
文件页数: 27/27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
ST78C36/36A
9
REV. 5.1.0
ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO
Cnfg-B Bits 5-3:
Select an IRQ channel per the following table:
TABLE 2: IRQ SELECTION: CNFG-B BITS[5:3]
WRITE TO FIFO
READ FROM FIFO
000
001
7
001
7 (Default)
010
9
011
001
7
100
001
7
101
001
7
110
001
7
111
5
Cnfg-B Bit-6:
Returns the true value of the selected IRQ pad.
Cnfg-B Bit-7:
Indicates RLE compression is not supported.
3.12
EXTENDED CONTROL REGISTER ( ECR )
The Extended Control Register has a system RESET state of 10010101. The significance of the bits is defined
by the ECP specification as:
ECR Bit-0:
This read-only bit returns FIFO empty status (FIFO-E) and is forced high unless PPF, ECP, or TST mode is
selected.
0 = At least one byte of data contains in the FIFO.
1 = FIFO is empty.
ECR Bit-1:
This read-only bit returns FIFO full status (FIFO-F) and is forced low unless PPF, ECP, or TST mode is
selected.
0 = At least one empty location is available in the FIFO.
1 = FIFO is full.
IRQ
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