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| 型号： | SCFLXRAYADPTS12 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 7/56页 |
| 文件大小： | 0K |
| 描述： | ADAPTER BOARD FRDC |
| 标准包装： | 1 |
| 系列： | * |
| 附件类型： | * |
| 适用于相关产品： | * |
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SCF5250 Data Sheet: Technical Data, Rev. 1.3
Freescale Semiconductor
15
3.8
Serial Module Signals
The signals described in Table 5 transfer serial data between the two UART modules and the external
peripherals.
3.9
Timer Module Signals
Table 6 describes the Timer module signal which provides an external interface to Timer0.
Table 5. Serial Module Signals
Serial Module Signal
Description
Receive Data
The RXD0/GPIO46 and SDA1/RXD1/GPIO44 are the inputs on which serial data is received by the
DUART. Data is sampled on RxD[1:0] on the rising edge of the serial clock source, with the least
significant bit received first.
Transmit Data
The DUART transmits serial data on the TXD0/GPIO45 and SCL1/TXD1/GPIO10 output signals. Data
is transmitted on the falling edge of the serial clock source, with the least significant bit transmitted (LSB)
first. When no data is being transmitted or the transmitter is disabled, these two signals are held high.
TxD[1:0] are also held high in local loopback mode.
Request To Send
The DDATA3/RTS0/GP104 and DDATA1/RTS1/SDATA2_BS2/GPIO2 request-to-send outputs indicate
to the peripheral device that the DUART is ready to send data and requires a clear-to-send signal to
initiate transfer.
Clear To Send
Peripherals drive the DDATA2/CTS0/GPIO3 and DDATA0/CTS1/SDATA0_SDIO1/GPIO1 inputs to
indicate to the SCF5250 serial module that it can begin data transmission.
Table 6. Timer Module Signals
Serial Module Signal
Description
Timer Output
The SDATAO1/TOUT0/GPIO18 programmable output pulse or toggle on various timer events.
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