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DSP56303 数据表(PDF) 178 Page - Freescale Semiconductor, Inc

部件名 DSP56303
功能描述  DSP56303 USER?셎 MANUAL
PDF  292 Pages
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制造商  FREESCALE [Freescale Semiconductor, Inc]
网页  http://www.freescale.com
标志 FREESCALE - Freescale Semiconductor, Inc

DSP56303 数据表(HTML) 178 Page - Freescale Semiconductor, Inc

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DSP56303 User’s Manual, Rev. 2
8-10
Freescale Semiconductor
Serial Communication Interface (SCI)
8.6.1 SCI Control Register (SCR)
The SCR is a read/write register that controls the serial interface operation.
Figure 8-2. SCI Data Word Formats (SSFTD = 0), 2
Mode 0
8-bit Synchronous Data (Shift Register Mode)
TX
(SSFTD = 0)
One Byte From Shift Register
Mode 2
10-bit Asynchronous (1 Start, 8 Data, 1 Stop)
TX
(SSFTD = 0)
D7 or
Data
Type
Stop
Bit
Mode 4
11-bit Asynchronous (1 Start, 8 Data, 1 Even Parity, 1 Stop)
TX
(SSFTD = 0)
D7 or
Data
Type
Stop
Bit
Even
Parity
Mode 5
11-bit Asynchronous (1 Start, 8 Data, 1 Odd Parity, 1 Stop)
TX
(SSFTD = 0)
Start
Bit
D7 or
Data
Type
Stop
Bit
Odd
Parity
Mode 6
11-bit Asynchronous Multidrop (1 Start, 8 Data, 1 Data Type, 1 Stop)
TX
(SSFTD = 0)
Start
Bit
Stop
Bit
Data
Type
• Modes 1, 3, and 7 are reserved.
• D0 = LSB; D7 = MSB.
• Data is transmitted and received LSB first if SSFTD = 0,
or MSB first if SSFTD = 1.
D0
D1
D2
D3
D4
D5
D6
D7
01
0
D0
D1
D2
D3
D4
D5
D6
WDS2 WDS1 WDS0
00
0
10
0
D0
D1
D2
D3
D4
D5
D6
D0
D1
D2
D3
D4
D5
D6
Start
Bit
WDS2 WDS1 WDS0
Start
Bit
WDS2 WDS1 WDS0
10
1
WDS2 WDS1 WDS0
D0
D1
D2
D3
D4
D5
D6
D7
11
0
WDS2 WDS1 WDS0
0 = Data Byte
Data Type: 1 = Address Byte



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