Toshiba TLCS-900/H1 Series Manual page 432

2
3.20 I S (Inter-IC Sound)
An I S format compatible serial output circuit is built-in.
2
This product can be used in digital audio system applications by connecting LSI for sound
generation (e.g., a DA converter).
This circuit has both I
and data transmitting functions.
Figure 3.20.1 shows an outline for each mode.
1) Format
2) Used pin
3) WS frequency
4) Baud rate
(at fc = 40 MHz)
5) Transmittion buffer
6) Direction of data
7) Data length
8) Edge of clock
9) Interrupt
S mode and general SIO mode. But both modes have only clock output
2
Table 3.20.1 Outline for Each Mode
2
I S mode
2
I S-format compatible
(Only master and transmitting)
1. I2SCKO (Clock output)
2. I2SDO (Clock output)
3. I2SWS (Word select output)
Selectable either fs/4 or TA1OUT
(TMRA1 output)
Selectable either 20, 10, 5, or 2.5 Mbps
16 bytes × 2 channels (Right, left)
Selectable either MSB first or LSB first
Selectable either 8 bits or 16 bits
Selectable either rising edge or falling edge
INTI2S (FIFO empty interrupt)
92CH21-430
SIO mode
General
(Only master and transmitting)
1. I2SCKO (Clock output)
2. I2SDO (Data output)
−
32 bytes
TMP92CH21
2009-06-19