CP2201 datasheet(45/108 Pages) SILABS

45 / 108 page

CP2200/1

Rev. 1.0

10.5. Disabling Secondary Device Functions

The LED Drivers, weak pull-ups, and VDD Monitor can be disabled to minimize power consumption. The typical

supply current for the VDD Monitor is specified in Table 13 on page 42. Disabling weak pull-ups will save current if

the MOTEN and MUXEN pins are tied to ground, but will cause the address and data pins to float (causing

undefined device behavior and increased power consumption) if they are not externally driven or pulled to a

defined logic level using pull-up or pull-down resistors. The internal weak pull-ups should not be disabled unless all

digital pins are externally driven to a logic high or logic low state.

Bits 7–4: UNUSED. Read = 0000b, Write = don’t care.

Bit 3

ACTEN: Activity LED Enable

0: Activity LED disabled.

1: Activity LED enabled.

Bit 2

LINKEN: Link LED Enable (Link/Activity LED on CP2201)

0: Link (Link/Activity) LED disabled.

1: Link (Link/Activity) LED enabled.

Bit 1:

WEAKD: Weak Pull-up Disable

0: Weak pull-ups are enabled.

1: Weak pull-ups are disabled.

Bit 0:

Reserved. Read = 0b; Must write 0b.

R/W

Reset Value

—

ACTEN

LINKEN

WEAKD Reserved 00000000

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Address:

0x70

CP2201 Datasheet(PDF) 45 Page - Silicon Laboratories