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參數(shù)資料
| 型號： | 22505_1 |
| 英文描述： | AMD Test Interface Port Board Schematics? 149KB (PDF) |
| 中文描述： | AMD測試接口端口板原理圖？ 149KB（PDF格式） |
| 文件頁數(shù)： | 33/78頁 |
| 文件大?。?/td> | 2691K |
| 代理商： | 22505_1 |
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Test Interface Port Board User’s Manual
2-9
Interrupt Enable Register:
This register enables the following serial port
interrupts: modem status, receiver line status, transmitter holding empty,
received data available, and time-out interrupts (when DLAB is 0).
Interrupt Identification Register:
This is a read-only register used to identify
UART interrupts.
FIFO Control Register:
This is a write-only register used to enable and control
the FIFO in 16650-compatible mode.
Line Status Register:
This register shows the status of the data transfer,
including parity and framing errors, in addition to break and empty indicators.
Modem Control Register:
This register is used to enable interrupts and
loopback diagnostic mode, and to assert RTS and DTR.
Modem Status Register:
This register contains both real-time and latched
status bits for DCD, RIN, DSR, and CTS.
Scratch Pad Register:
This is a general purpose I/O location used to hold
temporary data and is not required for serial data transfer.
Configuring the Serial Port for DTE
Because the TIP board provides information to a terminal, it is considered data
carrier equipment (DCE), and the serial ports are configured accordingly in its
default design. You can also configure the TIP board to serve as data terminal
equipment (DTE) if necessary.
To reconfigure serial port 0 to operate as DTE, use the following procedure:
1. Depopulate resistors R24 through R31.
2. Populate resistors R44 through R50, located on the back of the board.
3. A gender changer is now required for serial port 0, either on the TIP board end
or the connecting cable end.
To reconfigure serial port 1 to operate as DTE, use the following procedure:
1. Depopulate resistors R34 through R41.
2. Populate resistors R51 through 57, located on the back of the board.
3. A gender changer is now required for serial port 1, either on the TIP board end
or the connecting cable end.
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