Sci data word formats (ssftd = 0), 2 -11, Figure 8-2. sci data word formats (ssftd = 0), 2 – Motorola DSP56301 User Manual
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SCI Programming Model
Serial Communication Interface (SCI)
8
-11
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
Note: 1. Modes 1, 3, and 7 are reserved.
2. D0 = LSB; D7 = MSB.
3. Data is transmitted and received LSB first if SSFTD = 0,
or MSB first if SSFTD = 1.
D0
D1
D2
D3
D4
D5
D6
D7
0
1
0
D0
D1
D2
D3
D4
D5
D6
WDS2 WDS1 WDS0
0
0
0
1
0
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
1
0
1
WDS2 WDS1 WDS0
D0
D1
D2
D3
D4
D5
D6
D7
1
1
0
WDS2 WDS1 WDS0
0 = Data Byte
Data Type: 1 = Address Byte