UCS1003-2 datasheet(65/138 Pages) MICROCHIP

65 / 138 page

 2014-2015 Microchip Technology Inc.

DS20005346B-page 65

UCS1003-1/2/3

10.3

Status Registers

The Status registers store bits that indicate error

conditions, as well as Attach Detection and Removal

Detection. Unless otherwise noted, these bits will

operate as described when the UCS1003-1 is

operating in Stand-Alone mode.

Name

Bits Address

Cof

Default

Other Status

0Fh

00h

Interrupt Status

10h

R/W

00h

General Status

11h

R/R-C

00h

Profile Status 1

12h

00h

Profile Status 2

13h

00h

Pin Status

14h

00h

OTHER STATUS REGISTER (ADDRESS 0Fh)

U-0

R-0

—

ALERT_PIN ADET_PIN(1) CHG_ACT(2)

EM_ACT(3)

EM_STEP<1:0>

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7-6

Unimplemented:

Read as ‘0’

bit 5

ALERT_PIN:

ALERT# Pin Status bit

This bit is set and cleared as the ALERT# pin changes states.

= ALERT# pin is asserted low

= ALERT# pin is released

bit 4

ADET_PIN:

A_DET# Pin Status bit(1)

When set, indicates that the A_DET# pin is asserted low. This bit is set and cleared as the A_DET# pin

changes states.

= A_DET# pin is asserted low

= A_DET# pin is released

bit 3

CHG_ACT:

IBUS Set/Clear Status bit(2)

This bit is automatically set when IBUS > IBUS_CHG and cleared when IBUS < IBUS_CHG.

= IBUS > IBUS_CHG

= IBUS < IBUS_CHG

bit 2

EM_ACT:

UCS1003-1 Active State and Emulating Status bit(3)

The actual profile that is being applied is identified by PRE_EM_SEL<3:0> (see Section 10.12.1

“Applied Charger Emulation Register”

). This bit is set and cleared automatically.

= Device is in the Active state and emulating

= Device is not emulating

bit 1-0

EM_STEP<1:0>:

Charger Emulation Stimulus/Response Pair Application bits

Indicates which stimulus/response pair is currently being applied by the charger emulation profile as

shown below. These bits are set and cleared automatically. Note that the Legacy charger emulation

profiles and the BC1.2 DCP charger emulation profile do not use Stimulus/Response Pair #3.

= None applied, waiting for current.

= Stimulus/Response #1

= Stimulus/Response #2

= Stimulus/Response #3 if applicable

Note 1:

If S0 is ‘1’, PWR_EN is enabled and VS is not present; the ADET_PIN bit will cycle if the current draw

exceeds the current capacity of the bypass switch.

The CHG_ACT bit does not indicate that a portable device has accepted one of the charger emulation

profiles. This bit will cycle during the Dedicated Charger Emulation Cycle mode.

The EM_ACT bit does not indicate that a portable device has accepted one of the emulation profiles. This

bit will cycle during the Dedicated Charger Emulation Cycle mode

UCS1003-2 Scheda tecnica(PDF) 65 Page - Microchip Technology

UCS1003-2 Scheda tecnica(HTML) 65 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Scheda tecnica Scarica

Link URL