Number Name Type Description
1 VDDA Power VDD 3.3V
2 SDA_DFC0 I/O I2C DATA pin, can be setup become DFC0 by OTP programming
3 SEL_DFC/SCL_DFC1 Input
I2C CLK pin,
SEL_DFC is a latch input pin during the power up
High on power on: I2C mode as SCLK function,
Low on power on: SCL and SDA as DFC function pins.
4 CLKIN/X2 I/O Crystal Oscillator interface output or Differential clock input pin (CLKIN)
5 CLKINB/X1 Input Crystal Oscillator interface input or Differential clock input pin (CLKINB)
6 VBAT Power Power supply pin for 32.768KHz DCO, usually connect to coin cell battery, 2.5~3.3V
7 VSS Power Connect to ground.
8 VDD33 Power VDD 3.3V
9 VSSSE1 Power Connect to ground.
10 VDDSE1 Power Output power supply. Connect to 1.8 to 3.3V. Sets output voltage levels for SE1.
11 SE1 Output Output Clock SE1.
12 OE1 Input
OE1’s function selected from OTP preprogram register bits.
OE1 pull to 6.5V when burn OTP registers.
Refer to OE function table for details
13 VDDDIFF1 Power Output power supply. Connect to 2.5 to 3.3V. Sets output voltage levels for DIFF1.
14 DIFF1B Output
Differential clock output 1_Complement,
can be OTP pre-program to LVCMOS/LPHCSL/LVDS/LVPECL output type
15 DIFF1 Output
Differential clock output 1_True,
can be OTP pre-program to LVCMOS/LPHCSL/LVDS/LVPECL output type
16 VSSDIFF1 Power Connect to ground.
17 VDDDIFF2 Power Output power supply. Connect to 2.5 to 3.3V. Sets output voltage levels for DIFF2.
18 DIFF2B Output
Differential clock output 2_Complement,
can be OTP pre-program to LVCMOS/LPHCSL/LVDS/LVPECL output type
19 DIFF2 Output
Differential clock output 2_True,
can be OTP pre-program to LVCMOS/LPHCSL/LVDS/LVPECL output type
20 VSSDIFF2 Power Connect to ground.
21 ePAD Power Connect to ground.
