STMicroelectronics STA304A
the standard IIS protocol is supported. The DSP operates at c49.152MHz (1024xfs). This frequency is generated by an internal PLL with programmable multiplication factor u(x2 or x8).DESCRIPTION
leThe STA304A Digital Audio Processor is a single ochip device implementing end to end digital solution sfor audio application. In conjunction with STA500 bpower bridge it gives the full digital DSP-to-power Ohigh quality chain with no need for audio Digital-to- Analog converters between DSP and power stage. ROM DSP RAM DDX I2S 29 LEFT_A 30 LEFT_B 27 RIGHT_A 28 RIGHT_B 33 SLEFT_A 34 SLEFT_B 23 SRIGHT_A 24 SRIGHT_B 21 LFE_A 22 LFE_B 43 LRCKO 43 BICKO 43 SDO_1 43 SDO_2 43 SDO_3 RESET 7 PLL PowerDown 35 EAPD April 2010 14 15 XTI XTO 43 CKOUT 44 PWDN 1/31 STA304A 1.0DESCRIPTION
(continued) The device supports two main configurations as far as input sources: AC'97 input or IIS/SPDIF input: selection is made via a dedicated pin (AC97_MODE pin). The AC`97 can be configured to work in two different ways: 'Full Compliant' mode and 'Proprietary' mode which enables more features. The selection of the operating mode is done via a specific bit in a Vendor Reserved register (see bit 0: AC97_FC_mode in the CRA register, address 5Ah).