Texas Instruments DEM-DIR9001EVM - DEM-DIR9001 Evaluation Module DEM-DIR9001EVM DEM-DIR9001EVM Datenbogen
Produktcode
DEM-DIR9001EVM
www.ti.com
1.2.4
Function Control
1.2.5
Operation Mode Control
1.2.6
CN003 Status Output
1.2.7
Status Indicator
Description
Table 1. SW002: FMT0, FMT1 PCM Audio Data Format Selection
FMT[1:0] SETTING
DOUT SERIAL AUDIO DATA OUTPUT FORMAT
FMT1
FMT0
L
L
16-bit MSB first, right justified
L
H
24-bit MSB first, right justified
H
L
24-bit MSB first, left justified
H
H
24-bit MSB first, I
2
S
Table 2. SW002: PSCK0, PSCK1 System Clock Frequency Selection
PSCK[1:0] SETTING
OUTPUT CLOCK AT PLL SOURCE
PSCK1
PSCK0
SCKO
BCKO
LRCKO
L
L
128fs
64fs
fs
L
H
256fs
64fs
fs
H
L
384fs
64fs
fs
H
H
512fs
64fs
fs
SW004 is the fundamental operation mode control for DIR9001.
XTAL: Outputs connected at the XTAL resonator clock and divided clock
AUTO: Outputs from either the PLL generated clock or the XTAL clock are automatically
selected by the operation status of DIR9001.
DIR9001 is locked into SPDIF interface clock
DIR9001 is locked into SPDIF interface clock
→
PLL clock
DIR9001 is unlocked into SPDIF interface clock
→
XTAL clock
PLL: Outputs from the PLL generated clock
If in the PLL mode operation, XTAL clock is not required for all operations of the
DIR9001.
DIR9001.
CN003 is the output for the Channel status (COUT), User bit (UOUT), Bit frame (BFRAME), and clock
transition status (CLKST).
transition status (CLKST).
The following status is shown with an LED indicator.
•
ERROR : Unlock or Data parity error
•
AUDIO : non audio data
•
EMPH : with pre-emphasis
•
FSOUT1 : detected sampling rate
•
FSOUT2 : detected sampling rate
SLAU225 – July 2007
DIR9001 Evaluation Board
3