HYT POWER446 Service Manual page 18

17 Vcc
18 PG0
19 PG2/X1A
20 PG1/X0A
21 /RST
22 P00/INT00
23 P01/INT01
24 P02/INT02
25 P03/INT03
26 P04/INT04
27 P05/INT05
28 P06/INT06
29 P07/INT07
30 P10/UI0
31 P11/UO0
32 P12/UCK0
P13/TRG0/AD
33
TG
34 P14/PPG0
I
VCC
C /
OSC32K O
OSC32K O
RESET I
Reserve O
Reserve O
Reserve O
Reserve O
PLLEN2
O
PLLDATA2
O
PLLCLK2
O
UL2 I
RXD I
TXD O
Reserve O
Reserve I
MIC_EN I
POWER446 Service Manual
connected to GND.)
5V power supply pin (During programming,
this pin is connected with VCC.)
Not used as I/O; a capacitor is connected
between the pin and the grounded Vss.
Subordinate crystal oscillator pin (reserved)
Reset pin (During programming, this pin is
connected to RSTX.)
Reserved
PLL enable pin
PLL data pin
PLL clock pin
For detection of PLL circuit (TB31202)
(H: locked; L: unlocked) (connected with external
pull-up resistor)
UART RX pin (During programming, this pin is
connected to UI.)
UART TX pin (During programming, this pin is
connected to UO.)
Reserved
Reserved
For checking MIC connection (connected
with external pull-down resistor)
level)
16
(valid at high