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| 型號(hào)： | STPCI01 |
| 英文描述： | STPC INDUSTRIAL / PC COMPATIBLE EMBEDED MICROPROCESSOR |
| 中文描述： | STPC工業(yè)/ PC兼容的嵌入式微處理器 |
| 文件頁數(shù)： | 33/71頁 |
| 文件大?。?/td> | 1071K |
| 代理商： | STPCI01 |
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STRAP OPTION
Issue 2.4 - February 11, 2002
33/69
3.1.4. STRAP REGISTER 3
Bits 7-0 of this register reflect the status of pins MD[47:40] respectively.
Strap3
Access = 0022h/0023h
Regoffset = 03Ch
7
6
5
4
3
2
1
0
Rsv
MD45
MD44
MD43
MD42
MD41
MD40
This register defaults to the values sampled on MD[47:40] pins after reset
Bit Number Sampled
Mnemonic
Description
Bits 7-6
Rsv
Reserved.
Bit 5
MD45
UART2 internal or external. This bit reflects the
value sampled on
MD[45] pin
and controls the UART2 I/F as follows:
Setting to ’0’, UART2 is external.
Setting to ’1’, UART2 is internal.
Bit 4
MD44
UART1 internal or external and additional TFT outputs. This bit reflects
the
value sampled on MD[44] pin
and controls the UART1 I/F and the
additional TFT I/F as follows:
Setting to ’0’, UART1 is external and an additional 6 TFT outputs (lowest
bits - 2 red, 2 green and 2 blue) are enabled.
Setting to ’1’, UART1 is internal.
Bit 3
MD43
Parallel Port internal or external. This bit reflects the
value sampled on
MD[43] pin
and controls the Parallel Port I/F as follows:
Setting to ’0’, the Parallel Port is external.
Setting to ’1’, the Parallel Port is internal.
Bit 2
MD42
KB/Mouse internal or external. This bit reflects the
value sampled on
MD[42] pin
and controls the KB/Mouse controller I/F as follows:
Setting to ’0’, the KB/Mouse controller is external.
Setting to ’1’, the KB/Mouse controller is internal.
Bit 1
MD41
Local Bus I/F or ISA I/F. This bit reflects the
value sampled on MD[41]
pin
and sets whether the Local Bus I/F or the ISA I/F is available at the
device I/F as follows:
Setting to ’0’, selects the ISA I/F.
Setting to ’1’, selects the Local Bus I/F.
Bit 0
MD40
PCMCIA I/F or PCI I/F. This bit reflects the
value sampled on MD[40]
pin
and sets whether the PCMCIA I/F or the PCI I/F is available at the
device I/F as follows:
Setting to ’0’, selects the PCI I/F.
Setting to ’1’, selects the PCMCIA I/F.
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| STPCI2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:STPC ATLAS DATASHEET / X86 CORE PC COMPATIBLE SYSTEM-ON-CHIP FOR TERMINALS |
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