SH7720 Datasheet, PDF (776/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 21 Serial I/O with FIFO (SIOF)
(2) Frame Length
The length of the frame to be transferred by the SIOF is specified by the FL3 to FL0 bits in
SIMDR. Table 21.5 shows the relationship between the FL3 to FL0 bit settings and frame length.
Table 21.5 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. 3.00 Jan. 18, 2008 Page 714 of 1458
REJ09B0033-0300