CM9881 Overview
Description
The CM9881 provides eight DAC channels that simultaneously support 7.1-channel sound playback and two integrated stereo ADCs. Analog I/O (port-A/port-B/port-C/port-D/port-E/port-G) are stereo input and output re-tasking.
Key Features
- DACs with 97dB SNR (A-weighting), ADCs with 92dB SNR (A-weighting)
- Four stereo DACs support 16/20/24-bit PCM format for 7.1 channel sound playback
- Two stereo ADCs support 16/20/24-bit PCM format, multiple stereo recording
- Analog jacks (port-A/port-B/port-C/port-D/port-E/port-G) are stereo input and output re-tasking
- Port-D/C/H/I built-in headphone amplifiers
- Port-H and port-I support direct drive earphone, with no need for a DC capacitor
- Port-B/C/E/F with software selectable boost gain (+10/+20/+30dB) for analog microphone input
- Supports external PCBEEP input and built-in digital BEEP generator
- Software selectable 2.5V/3.2V/4.0V VREFOUT
- Four jack detection pins; each designed to detect 2 jac
