Figure 8-4 Sci Data Word Formats - Motorola DSP56309 User Manual

Serial Communication Interface (SCI)
SCI Programming Model
Mode 0
0 0
WDS2 WDS1 WDS0
TX
(SSFTD = 0)
Mode 2
0 1
WDS2 WDS1 WDS0
TX Start
(SSFTD = 0) Bit
Mode 4
1 0
WDS2 WDS1 WDS0
TX Start
(SSFTD = 0) Bit
Mode 5
1 0
WDS2 WDS1 WDS0
TX Start
(SSFTD = 0) Bit
Mode 6
1 1
WDS2 WDS1 WDS0
TX Start
(SSFTD = 0) Bit
Data Type: 1 = Address Byte
0 = Data Byte
8-6
0
8-bit Synchronous Data (Shift Register Mode)
D0 D1 D2
One Byte From Shift Register
0
10-bit Asynchronous (1 Start, 8 Data, 1 Stop)
D0 D1 D2
0
11-bit Asynchronous (1 Start, 8 Data, 1 Even Parity, 1 Stop)
D0 D1 D2
1
11-bit Asynchronous (1 Start, 8 Data, 1 Odd Parity, 1 Stop)
D0 D1 D2
0
11-bit Asynchronous Multidrop (1 Start, 8 Data, 1 Data Type, 1 Stop)
D0 D1 D2
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

Figure 8-4 SCI Data Word Formats

DSP56309UM/D
SSFTD = 0
D3 D4 D5 D6
D3 D4 D5 D6
D3 D4 D5 D6
D3 D4 D5 D6
D3 D4 D5 D6
D7
D7 or
Stop
Data
Bit
Type
D7 or
Even Stop
Data
Parity Bit
Type
D7 or
Odd Stop
Data
Parity Bit
Type
Stop
Data
D7
Bit
Type
AA0691
MOTOROLA