参数资料
型号: 37C669
厂商: SMSC Corporation
英文描述: DIODE SCHOTTKY SINGLE 25V 200mW 0.5V-vf 200mA-IFM 30mA-IF 2uA-IR SOD-323 3K/REEL
中文描述: 电脑98/99顺从超级I / O软盘控制器与红外线支持
文件页数: 31/164页
文件大小: 621K
代理商: 37C669
126
CR07
This register can only be accessed in the
Configuration Mode and after the CSR has
been initialized to 07H.
The default value of
this register after power up is 00H. This register
holds the value for the auto power management,
and floppy boot drive.
Table 53 - CR07
BIT NO.
BIT NAME
DESCRIPTION
0,1
Floppy Boot
This bit is used to define the boot floppy.
0 = Drive A (default)
1 = Drive B
2
Reserved
Read as 0.
3
Reserved
Read as 0.
4
Parallel Port
Enable
This bit controls the AUTOPOWER DOWN feature of the
Parallel Port. The function is:
0 = Auto powerdown disabled (default)
1 = Auto powerdown enabled
This bit is reset to the default state by POR or a hardware reset.
5
UART 2 Enable This bit controls the AUTOPOWER DOWN feature of the
UART2. The function is:
0 = Auto powerdown disabled (default)
1 = Auto powerdown enabled
This bit is reset to the default state by POR or a hardware reset.
6
UART 1 Enable This bit controls the AUTOPOWER DOWN feature of the
UART1. The function is:
0 = Auto powerdown disabled (default)
1 = Auto powerdown enabled
This bit is reset to the default state by POR or a hardware reset.
7
Floppy Disk
Enable
This bit controls the AUTOPOWER DOWN feature of the Floppy
Disk. The function is:
0 = Auto powerdown disabled (default)
1 = Auto powerdown enabled
This bit is reset to the default state by POR or a hardware reset.
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