Texas Instruments SLEU056 - Manual (Page 15)

Description of Jumper Settings
2-3 Detailed Description of the EVM
2.2 Description of Jumper Settings
There are three jumpers on the EVM board (J400 is an I 2 S interface)
2.2.1 Double-Speed Control (JMP120)
JMP120 is used to set the double-speed pin at TAS5010 (DBSPD, pin 39). The
TAS5010 is operating in single-speed mode if the DBSPD pin is asserted low
and in double-speed if it is asserted high. Single-speed is required for
sampling rate at 32 kHz, 44.1 kHz, 48 kHz, and double-speed for 88-kHz and
96-kHz sampling rate.
The S/PDIF receiver automatically controls the DBSPD pin if JMP120 shunts
pin 1 and 2 (default setting). If JMP120 shunts pin 2 and 3, the TAS5010 is in
single-speed mode. If JMP120 shunts pin 3 and 4, the TAS5010 is in double
speed mode.
2.2.2 Enable/Disable S/PDIF−MUTE (JMP130)
JMP130 is used to disable the S/PDIF-MUTE signal (S/PDIF-MUTE =
(DIR1703-UNLOCK + DIR1703-ADFLG)). The DIR1703-UNLOCK signal is
high until the PLL in DIR1703 detects and locks on an incoming digital signal.
The ADFLG signal is high when the S/PDIF data does not include a PCM audio
signal.
The S/PDIF-MUTE signal is used to shutdown the output stage (the H-bridge
stop switching). To obtain click and pop reduced shutdown it is necessary to
mute the output stage before Reset on TAS5010 is asserted low.
When the EVM board is connected to an analog source or to a digital source
through the I2S interface, is it necessary to disable the UNLOCK warning. This
is done with the JMP130 jumper. When JMP130 shunts pin 1 and 2 the
UNLOCK warning is enabled (default setting). The warning signal is disabled
If JMP130 shunts pin 2 and 3.
2.2.3 Bypassing Equalizer Functions in the Digital Audio Processor (JMP360)
JMP360 is used to disable the equalizer function in the DAP. The equalizer
function is enabled if JMP360 shunts pin 1 and 2. The equalizer is disabled
when JMP360 shunts pin 2 and 3.
Note:
Bass and treble are flat when the equalizer is bypassed.