Rainbow Electronics AT73C246 - Manual (Page 6)

6
11050A–PMAAC–07-Apr-10
AT73C246
MICLN Input 31 Analog Audio negative microphone input left
MICRN Input 32 Analog Audio negative microphone input right
MICR Input 33 Analog Audio positive microphone input right
MICL Input 34 Analog Audio positive microphone input left
MICBIAS Output 35 Analog Voltage bias for electret microphone
VDD4 Output 36 Power LDO4 output - 3.3V typ
VIN4 Input 37 Analog LDO4 input
VIN3 Input 38 Power LDO3 input
VDD3 Output 39 Analog LDO3 output - 3.3V typ
DAO Output 40 Digital Digital audio port data output
DAI Input 41 Digital Digital audio port data input
BCLK Input/Output 42 Digital Digital audio port bit clock
LRFS Input/Output 43 Digital Digital audio port left/right clock
MCLK Input 44 Digital Audio codec master clock input
VPAD Input 45 Power PMU I/O ring supply
NC - 46 - Leave open
NC - 47 - Connect to DGND
NC - 48 - Connect to DGND
MCLK32 Output 49 Digital RTC clock output - VPAD level
VDD2 Output 50 Analog LDO2 output
VIN2 Input 51 Power LDO2 input
VFB1 Input 52 Analog DCDC1 Voltage feedback input
VIN1 Input 53 Power DCDC1 power stage supply
SW1 Output 54 Analog DCDC1 power stage output
GND1 Ground 55 Analog DCDC1 power stage ground
VFB0 Input 56 Analog DCDC0 Voltage feedback input
VIN0 Input 57 Analog DCDC0 power stage supply
SW0 Output 58 Analog DCDC0 power stage output
GND0 Ground 59 Analog DCDC0 power stage ground
HRST Input 60 Digital
Hard reset - VBACKUP level - 100k Pull
down
PWREN Input 61 Digital
Power on/off - VBACKUP level - 100k
Pull down
WAKEUP0 Input 62 Digital
Wake up 0 input - VBACKUP level -
100k Pull down
Table 4-1. Pin Description
Pin Name I/O Pin Number Type Function