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: 40/164页
文件大小: 621K
代理商: 37C669
134
CR24
This register can only be accessed in the
Configuration Mode and after the CSR has been
initialized
to
25H.
The default value of this
register after power up is 00H. This register is
used to select the base address of UART1
(serial port 1).
The serial port can be set to 96
locations, on 8 byte boundaries from 100H-
3F8H.
To disable the serial port, set ADR9
and ADR8 to zero.
Upper Address Decode requirements : nCS='0'
and A10='0' are required to access UART1
registers. A[2:0] are decoded as XXXb.
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
ADR9
ADR8
ADR7
ADR6
ADR5
ADR4
ADR3
0
CR25
This register can only be accessed in the
Configuration Mode and after the CSR has been
initialized to 25H.
The default value of this
register after power up is 00H. This register is
used to select the base address of UART2
(serial port 2).
The serial port can be set to 96
locations, on 8 byte boundaries from 100H-
3F8H.
To disable the serial port, set ADR9
and ADR8 to zero.
Upper Address Decode requirements : nCS='0'
and A10='0' are required to access UART2
registers. A[2:0] are decoded as XXXb.
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
ADR9
ADR8
ADR7
ADR6
ADR5
ADR4
ADR3
0
CR26
This register can only be accessed in the
Configuration Mode and after the CSR has been
initialized
to
26H.
The default value of this
register after power up is 00H. This register is
used to select the DMA for the FDC (Bits 4:7)
and the parallel port (bits 3:0).
Any unselected
DMA REQ output is in tristate.
D3-D0
D7-D4
DMA Selected
0000
None
0001
DMA_A
0010
DMA_B
0011
DMA_C
相关PDF资料
PDF描述
37C672 ENHANCED SUPER I/O CONTROLLER WITH FAST IR
37C67X ENHANCED SUPER I/O CONTROLLER WITH FAST IR
37C957FR ULTRA I/O CONTROLLER FOR PORTABLE APPLICATIONS
37FMA1-ABW31N SPECIAL SWITCH-PIEZO SWITCH, SPST, MOMENTARY, 0.2A, 24VDC, PANEL MOUNT-THREADED
37FML1-BEW31N SPECIAL SWITCH-PIEZO SWITCH, SPST, MOMENTARY, 0.2A, 24VDC, PANEL MOUNT-THREADED
相关代理商/技术参数
参数描述
37C672 制造商:SMSC 制造商全称:SMSC 功能描述:ENHANCED SUPER I/O CONTROLLER WITH FAST IR
37C67X 制造商:SMSC 制造商全称:SMSC 功能描述:ENHANCED SUPER I/O CONTROLLER WITH FAST IR
37C-6BH-5-5 制造商:Birtcher Products 功能描述:
37C72U-185 制造商:White-Rodgers 功能描述:
37C73U-170 制造商:White-Rodgers 功能描述: