Cirrus Logic CDB53L21 - Manual (Page 2)

2 DS700DB1
CDB53L21
TABLE OF CONTENTS
1. SYSTEM OVERVIEW ............................................................................................................................. 4
1.1 Power ............................................................................................................................................... 4
1.2 Grounding and Power Supply Decoupling ........................................................................................ 4
1.3 FPGA ................................................................................................................................................ 4
1.4 CS53L21 Audio A to D Converter ..................................................................................................... 4
1.5 CS8406 Digital Audio Transmitter .................................................................................................... 5
1.6 Oscillator ........................................................................................................................................... 5
1.7 I/O Stake Headers ............................................................................................................................ 5
1.8 Analog Input ..................................................................................................................................... 5
1.9 Stand-Alone Switches ...................................................................................................................... 6
1.10 Control Port Connectors ................................................................................................................. 6
1.10.1 RS-232 and USB Connectors ............................................................................................... 6
2. SOFTWARE MODE CONTROL ............................................................................................................. 7
2.1 General Configuration Tab ............................................................................................................... 8
2.2 ADC Configuration Tab .................................................................................................................... 9
2.3 ADC Volume Controls Tab ............................................................................................................. 10
2.4 Mix Volume Controls Tab ............................................................................................................... 11
2.5 Register Maps Tab ......................................................................................................................... 12
3. HARDWARE MODE CONTROL .......................................................................................................... 13
3.1 FPGA H/W Control ......................................................................................................................... 13
3.2 CS53L21 H/W Control .................................................................................................................... 16
4. PERFORMANCE PLOTS ..................................................................................................................... 17
5. SYSTEM CONNECTIONS AND JUMPERS ........................................................................................ 20
6. BLOCK DIAGRAM ............................................................................................................................... 22
7. SCHEMATICS ...................................................................................................................................... 23
8. BOARD LAYOUT ................................................................................................................................. 30
9. REVISION HISTORY ............................................................................................................................ 33