Jumpers and Control Utilities | www.ti.com |
3.4GAIN Jumpers
GAIN0 and GAIN1 jumpers enable the user to change the gain of the device. It is important to assert RESET (S2 labeled MASTER RESET) after each gain change in order for the device to recognize the new gain configuration. The truth table is shown below and also it is marked on the EVM board. However, the gain settings are WRONG on the EVM silkscreen. Refer to Table 3 for the correct gain settings.
Table 3. TAS5704 Gain Configuration
Jumper GAIN1 | Jumper GAIN0 | GAIN (dB) |
Shunt IN = 0 | Shunt OUT = 1 |
|
0 | 0 | |
0 | 1 | 3 |
1 | 0 | 9 |
1 | 1 | 12 |
3.5Data Format Jumpers
FM0, FM1, and FM2 are used to change the data format by which TAS5704 operates. FMT0 and FMT1 jumpers associated with DIR9001 in SPDIF interface enables the user to change the data format of DIR9001 so that the data format is in sync with TAS5704 data format. Both TAS5704 and DIR9001 are set by default to operate at
Table 4. TAS5704 Data Format
FM2 (1) | FM1(1) | FM0(1) | DATA FORMAT |
0 | 0 | 0 | 16BIT RJ |
0 | 0 | 1 | 18BIT RJ |
0 | 1 | 0 | 20BIT RJ |
0 | 1 | 1 | 24BIT RJ |
1 | 0 | 0 | 16 - 24BIT I2S (Default) |
1 | 0 | 1 | 16 – 24bit RJ |
1 | 1 | 0 | RESERVED |
1 | 1 | 1 | TEST MODE |
(1)SHUNT IN = 0, SHUNT OUT = 1 (see schematics for details)
Table 5. DIR9001 SPDIF Output Data Format
FMT1(1) | FMT0(1) | DATA FORMAT |
0 | 0 | 16BIT |
0 | 1 | 24BIT RJ |
1 | 0 | 24BIT LJ |
1 | 1 | 24BIT I2S (Default) |
(1)SHUNT IN = 0, SHUNT OUT = 1 (See schematic for details)
3.6CONFIG Jumpers
CFG1 and CFG2 jumpers are used to select the output configuration between
12 | TA5704EVM |
