NY6 User Manual
Ver 1.3 2019/03/28
26
PA0
(VIP)
PA1
(VIN)
+
-
COMP
Comp
Flag
Clear $INTF1.3
EN
Set $ONOFF.3
2.12 LDO Regulator
A LDO regulator is built-in as the power of PB0~3 to support SPI applications. Users can set 3.3V and
internal power from LDO regulator through register $SPIV for SPI interface. The LDO regulator supplies
enough power consumption for reading data from SPI flash, but programming SPI flash won’t be supported
due to less supply current of LDO (10mA). Particularly, the LDO regulator is designated for SPI interface,
not normal IO. If users apply to control high-consumption device, i.e. LED, the application won’t work as
expected.
Please note that a 0.1uF capacitor nearby PB_VDD pin is necessary to stabilize the voltage if LDO
regulator is enabled.
2.13 Low Voltage Detector (LVD)
There is one hardware voltage detector in NY6. It offers four levels for various application, 2.4V, 2.7V, 3.6V
and 4.1V controlled by register $LVD. The voltage detection function has to be enabled first, then select
specific level for application, the flag will go to high while VDD is higher than selected level. User can check
power status by setting different level and monitoring the flag. In general, for 2-battery application,
2.4V/2.7V will be chosen; 3-battery application, 3.6V/4.1V.
2.14 Audio Synthesizer Structure
NY6 provides a built-in speech/MIDI synthesizer. The synthesizer consists of six channels for voice or MIDI
synthesis. The allowable simultaneous synthesis channel can be 2, 4 and 6. The block diagram of the
synthesizer unit is shown in figure below.