SH7785 Datasheet, PDF (1162/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

22. Serial I/O with FIFO (SIOF)
(2) Frame Length
The frame length to be transferred by the SIOF is specified by the FL3 to FL0 bits in SIMDR.
Table 22.7 shows the relationship between the setting values and frame length.
Table 22.7 Frame Length
FL3 to FL0 Slot Length
00xx
8
0100
8
0101
8
0110
8
0111
8
10xx
16
1100
16
1101
16
1110
16
1111
16
Note: x: Don't care.
Number of Bits
in a Frame
8
16
32
64
128
16
32
64
128
256
Transfer Data
8-bit monaural data
8-bit monaural data
8-bit monaural data
8-bit monaural data
8-bit monaural data
16-bit monaural data
16-bit monaural/stereo data
16-bit monaural/stereo data
16-bit monaural/stereo data
16-bit monaural/stereo data
(3) Slot Position
The SIOF can specify the position of transmit data, receive data, and control data in a frame
(common to transmission and reception) by slot numbers. The slot number of each data is
specified by the following registers.
• Transmit data: SITDAR
• Receive data: SIRDAR
• Control data: SICDAR
Only 16-bit data is valid for control data. In addition, control data is always assigned to the same
slot number both in transmission and reception.
Rev.1.00 Jan. 10, 2008 Page 1132 of 1658
REJ09B0261-0100