Motorola DSP56309 User Manual page 218

Mode 0
0 0
WDS2 WDS1 WDS0
TX
(SSFTD = 1)
Mode 2
0 1
WDS2 WDS1 WDS0
TX Start
(SSFTD = 1) Bit
Mode 4
1 0
WDS2 WDS1 WDS0
TX Start
(SSFTD = 1) Bit
Mode 5
1 0
WDS2 WDS1 WDS0
TX Start
(SSFTD = 1) Bit
Mode 6
1 1
WDS2 WDS1 WDS0
TX Start
(SSFTD = 1) Bit
Data Type: 1 = Address Byte
0 = Data Byte
MOTOROLA
SSFTD = 1
0
8-bit Synchronous Data (Shift Register Mode)
D7 D6 D5
One Byte From Shift Register
0 10-bit Asynchronous (1 Start, 8 Data, 1 Stop)
D7 D6 D5
0
11-bit Asynchronous (1 Start, 8 Data, 1 Even Parity, 1 Stop)
D7 D6 D5
11-bit Asynchronous (1 Start, 8 Data, 1 Odd Parity, 1 Stop)
1
D7 D6 D5
11-bit Asynchronous Multidrop (1 Start, 8 Data, 1 Data Type, 1 Stop)
0
D7 D6 D5
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 (Continued)
DSP56309UM/D
Serial Communication Interface (SCI)
D4 D3 D2 D1
D4 D3 D2 D1
D4 D3 D2 D1
D4 D3 D2 D1
D4 D3 D2 D1
SCI Programming Model
D0
D0 or
Stop
Data
Bit
Type
D0 or
Even Stop
Data
Parity Bit
Type
D0 or
Odd Stop
Data
Parity Bit
Type
Data
Stop
D0
Type
Bit
AA0691 (cont.)
8-7