SH7619 Datasheet, PDF (515/836 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7619 Series

Section 16 Serial I/O with FIFO (SIOF)
16.4.4 Register Allocation of Transfer Data
Transmit/Receive Data: Writing and reading of transmit/receive data is performed for the
following registers.
• Transmit data writing: SITDR (32-bit access)
• Receive data reading: SIRDR (32-bit access)
Figure 16.5 shows the transmit/receive data and the SITDR and SIRDR bit alignment.
(a) 16-bit stereo data
31
24 23
16 15
87
0
L-channel data
R-channel data
(b) 16-bit monaural data
31
24 23
16 15
87
0
Data
(c) 8-bit monaural data
31
24 23
16 15
87
0
Data
(d) 16-bit stereo data (left and right same audio output) data
31
24 23
16 15
87
0
Data
Figure 16.5 Transmit/Receive Data Bit Alignment
Note: In the figure, only the shaded areas are transmitted or received as valid data. Data in
unshaded areas is not transmitted or received.
Monaural or stereo can be specified for transmit data by the TDLE bit and TDRE bit in SITDAR.
Monaural or stereo can be specified for receive data by the RDLE bit and RDRE bit in SIRDAR.
To achieve left and right same audio output while stereo is specified for transmit data, specify the
TLREP bit in SITDAR. Tables 16.6 and 16.7 show the audio mode specification for transmit data
and that for receive data, respectively.
Rev. 5.00 Mar. 15, 2007 Page 477 of 794
REJ09B0237-0500