SH7205 Datasheet, PDF (929/1904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 19 Serial Sound Interface with FIFO (SSIF)
Bit
24 to 4
3, 2
1
Initial
Bit Name Value
R/W Description
—
Undefined R Reserved
The read value is undefined. The write value should
always be 0.
CHNO 00
[1:0]
R Channel Number
These bits show the current channel number.
• TRMD = 0 (Receive mode)
CHNO indicates which channel the data in SSIRDR
currently represents. This value will change as the
data in SSIRDR is updated from the shift register.
• TRMD = 1 (Transmit mode)
CHNO indicates which channel is required to be
written to SSITDR. This value will change as the
data is copied to the shift register, regardless of
whether the data is written to SSITDR.
SWNO 1
R System Word Number
This status bit indicates the current word number.
• TRMD = 0 (Receive mode)
SWNO indicates which system word the data in
SSIRDR currently represents. This value will
change as the data in SSIRDR is updated from the
shift register, regardless of whether SSIRDR has
been read.
• TRMD = 1 (Transmit mode)
SWNO indicates which system word is required to
be written to SSITDR. This value will change as the
data is copied to the shift register, regardless of
whether the data is written to SSITDR.
Rev. 1.00 Mar. 25, 2008 Page 897 of 1868
REJ09B0372-0100