Texas Instruments SLEU056 manual Description of Jumper Settings, Double-Speed Control JMP120

Description of Jumper Settings

2.2 Description of Jumper Settings

There are three jumpers on the EVM board (J400 is an I2S interface)

2.2.1Double-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.

2.2.2Enable/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.

2.2.3Bypassing 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.

Detailed Description of the EVM 2-3