TPIC6B595 shift register - Can't seem to get it to work with Teensy 3.5 - do I need to set up pins?

Projects Programming
3

Yes I think I have these right. The complete connections are:

Pin Connection
2 5V Teensy pin (vcc)
3 Teensy pin 21 (data out)
5 LED > 470R > 5v rail
8 10k > 5v (SRCLR pulled high)
9 GND (G - output enable pulled low)
10 GND
11 GND
12 Teensy pin 19 (RCK - latch)
13 Teensy pin 20 (SRCK - clock)
19 GND