DSP56303 FREESCALE [Freescale Semiconductor, Inc], DSP56303 Datasheet - Page 162

• Manufacturer Part Number: DSP56303
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Enhanced Synchronous Serial Interface (ESSI)
7-30
SR
(b) Transmit Registers
23
23
(a) Receive Registers
23
23
7
7
7
7
MSB
MSB
MSB
MSB
MSB
MSB
MSB
MSB
Receive High Byte
Receive High Byte
Transmit High Byte
Transmit High Byte
Figure 7-13. ESSI Data Path Programming Model (SHFD = 1)
8-bit Data
8-bit Data
12-bit Data
12-bit Data
16-bit Data
16-bit Data
LSB
LSB
16 15
16 15
16 15
16 15
0 7
0 7
0 7
0 7
Receive Middle Byte
Receive Middle Byte
Transmit Middle Byte
Transmit Middle Byte
DSP56303 User’s Manual, Rev. 2
0
0
24-bit Data
24-bit Data
LSB
LSB
0
0
LSB
LSB
8 7
0
0
0 7
8 7
0
0
0 7
7
7
7
7
Receive Low Byte
Receive Low Byte
Transmit Low Byte
Transmit Low Byte
16 Bit
12 Bit
8 Bit
NOTES:
Data is received MSB first if SHFD = 0.
4-bit fractional format (ALC = 0).
32-bit mode is not shown.
0
0
NOTES:
Data is received MSB first if SHFD = 0.
24-bit fractional format (ALC = 0).
32-bit mode is not shown.
LSB
LSB
0
0
0
0
0
0
0
0
ESSI Transmit Data
(Write Only)
ESSI Receive Data
Register (Read Only)
ESSI Receive
Shift Register
Register
Least Significant
Zero Fill
Least Significant
Zero Fill
ESSI Transmit Shift
Register
WL1, WL0
24 Bit
Freescale Semiconductor
ST