IDTP9122

Advanced Datasheet

March 12, 2014

13

© 2014 Integrated Device Technology, Inc.

T2[28]

GPO16 Open-Drain Output Select:

0 : Push-pull output

1 : Open-drain output

T2[29]

GPO16 Output Voltage Select: For push-pull output driver.

0 : VOUT2 (FB2)

1 : VOUT1 (FB1)

T2[30]

GPIO17 Internal Pull-up Enable:

0 : Disable (1

A pull-down to VGND when pin configured as input)

1 : Enable (50kΩ pull-up to supply voltage selected by gpio17_vio)

T2[31]

GPIO17 Open-Drain Output Select:

Relevant only when pin configured as output.

0 : Push-pull output

1 : Open-drain output

T2[32]

GPIO17 I/O Voltage Select: For both input buffer and push-pull output driver.

0 : VOUT2 (FB2)

1 : VOUT1 (FB1)

T2[33]

VREF Output Disable:

0 : VREF = 0.5 x VOUT1(FB1)

1 : VREF output disabled

Trim

Bits

Parametric Trim

T3[1:0]

Device I/O Configuration and Control:

00 : Individual regulator enable via pins

01 : reserved

10 : Master enable control with programmable sequencing

11 : Master enable control with programmable sequencing

+ SLEEP mode support

T3[2]

TSD & UVLO Fault Disable:

Used for device characterization and burn-in only.

0 : Fault event shuts down all Buck regulators (programmed sequence)

1 : Fault ignored

T3[5:3]

Buck Power-

On Sequence Selection: Relevant only when mode[1:0]≠’00’

000 : wait

 Buck2  Buck1

001 : Buck2

 Buck1  wait

010 : Buck2

 wait  Buck1

011 : Buck1

 Buck2  wait

100 : wait

 Buck1  Buck2

101 : Buck1

 wait  Buck2

110 : Buck2

 Buck1

111 : Buck1 & Buck2

 wait

T3[6]

Buck1 SLEEP Mode Support: Relevant only when mode[1:0]=‘11’

0 : Buck1 not affected by SLEEP mode

1 : Buck1 supports SLEEP mode control