参数资料
型号: PC87393F-VJG
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 外设及接口
英文描述: 100-Pin LPC SuperI/O Devices for Portable Applications
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封装: TQFP-100
文件页数: 100/148页
文件大小: 1733K
代理商: PC87393F-VJG
2.0 Device Architecture and Configuration (Continued)
55
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2.14 SERIAL PORT 1 CONFIGURATION
2.14.1
Logical Device 3 (SP1) Configuration
Table 22 lists the configuration registers which affect the Serial Port 2. Only the last register (F0h) is described here. See
Sections 2.2.3 and 2.2.4 for descriptions of the others.
Table 22. Serial Port 1 Conguration Registers
2.14.2
Serial Port 1 Configuration Register
This register is reset by hardware to 02h.
Location:
Index F0h
Type:
R/W
Index
Conguration Register or Action
Type
Reset
30h Activate. See also bit 0 of the SIOCF1 register and bit 3 of the SIOCF6 register. R/W
00h
60h Base Address MSB register. Bits 7-3 (for A15-11) are read only, 00000b.
R/W
03h
61h Base Address LSB register. Bit 2-0 (for A2-0) are read only, 000b.
R/W
F8h
70h Interrupt Number and Wake-Up on IRQ Enable register
R/W
04h
71h Interrupt Type. Bit 1 is R/W; other bits are read only.
R/W
03h
74h Report no DMA Assignment
RO
04h
75h Report no DMA Assignment
RO
04h
F0h Serial Port 1 Conguration register
R/W
02h
Bit
76543210
Name
Bank
Select
Enable
Reserved
Busy
Indicator
Power
Mode
Control
TRI-STATE
Control
Reset
00000010
Bit
Description
7
Bank Select Enable. Enables bank switching for Serial Port 1.
0: Disabled (default).
1: Enabled
6-3
Reserved
2
Busy Indicator. This read only bit can be used by power management software to decide when to power-down
the Serial Port 1 logical device.
0: No transfer in progress (default).
1: Transfer in progress.
1
Power Mode Control. When the logical device is active in:
0: Low power mode
Serial Port 1 clock disabled. The output signals are set to their default states. The RI input signal can be
programmed to generate an interrupt. Registers are maintained (unlike Active bit in Index 30 that also
prevents access to Serial Port 1 registers).
1: Normal power mode
Serial Port 1 clock enabled. Serial Port 1 is functional when the logical device is active (default).
0
TRI-STATE Control. When enabled and the device is inactive, the logical device output pins are in TRI-STATE.
0: Disabled (default)
1: Enabled
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