Specifications

42
3 9.5
4 12
5 15.5
6 18
7 21.5
8 -24
9 -20.5
10 -18
11 -14.5
12 -12
13 -8.5
14 -6
15 -2.5
Table 14: DAC digital gain rate selection
The DAC analogue amplifier has a programmable gain with seven individual 3dB steps. The
overall gain control of the DAC is controlled by a VM function. This setting is a combined
function of the digital and analogue amplifier settings, therefore, for a 1V rms nominal
digital output signal from the digital gain stage of the DAC, the following approximate
output values of the analogue amplifier of the DAC can be expected:
Analogue Gain Setting DAC Gain Setting (dB)
7 3
6 0
5 -3
4 -6
3 -9
2 -12
1 -15
0 -18
Table 15: DAC analogue gain rate selection
7.2.3 IEC 60958 Interface
The IEC 60958 interface is a digital audio interface that uses bi-phase coding to minimize
the DC content of the transmitted signal and allows the receiver to decode the clock
information from the transmitted signal. The IEC 60958 specification is based on the two
industry standards AES/EBU and the Sony and Philips interface specification SPDIF. The
interface is compatible with IEC 60958-1, IEC 60958-3 and IEC 60958-4.
The SPDIF interface signals are SPDIF_IN and SPDIF_OUT and are shared on the PCM
interface pins. The input and output stages of the SPDIF pins can interface either to a 75Ω
Coaxial cable with an RCA connector, see Figure 16, or there is an option to use an optical
link that uses Toslink optical components, see Figure 17.