MIC2555-0BML datasheet(24/29 Pages) MICREL

Part #	MIC2555-0BML

Description	USB ??OTG Transceiver

Download	29 Pages

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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Micrel, Inc.

MIC2555

December 2006

24

M9999-121406

Interrupt Source Register

Interrupt Status

rd - 08h

Indicates the current state of signals that can

generate an interrupt.

vbus_vld

1

rd

bit 0

1 = VBUS > 4.4V

(VBUS valid comparator)

sess_vld

1

rd

bit 1

1 = 0.8V< VBUS< 2.0V.

(Session valid comparator)

se_dp

1

rd

bit 2

1 = D+ pin is HIGH

id_gnd_in

1

rd

bit 3

1 = ID pin grounded

se_dm

1

rd

bit 4

1 = D- pin is HIGH

id_float

1

rd

bit 5

1 = ID pin floating

bdis_acon

(sess_end)

1

rd

bit 6

If: bdis_acon_en = 1

1 = SE0 has been detected, transceiver asserted

dp_pullup after detecting B-device disconnect.

If bdis_acon_en = 0, sess_end_en = 1

1 = VBUS < 0.8V. (Session End comparator output =

TRUE)

cr_int

1

rd

bit 7

1 = car kit interrupt, D+ pin has seen a pulse above

the interrupt level

Interrupt Latch 1

Interrupt Source

set –0Ah

clr – 0Bh

Indicates which sources have interrupted. 1 =

interrupt.

Vbus_vld

1

rd/s/c

bit 0

sess_vld

1

rd/s/c

bit 1

se_dp

1

rd/s/c

bit 2

id_gnd_in

1

rd/s/c

bit 3

se_dm

1

rd/s/c

bit 4

id_float

1

rd/s/c

bit 5

bdis_acon

(sess_end)

1

rd/s/c

bit 6

cr_int

1

rd/s/c

bit 7

Interrupt Mask False

False

Interrupt Mask

set – 0Ch

clr – 0Dh

Enables interrupts on transition from TRUE to FALSE

1

set

=

1,

Interrupt

on

T F.

1

clr = 0, no interrupt.

Vbus_vld

1

rd/s/c

bit 0

sess_vld

1

rd/s/c

bit 1

se_dp

1

rd/s/c

bit 2

id_gnd_in

1

rd/s/c

bit 3

se_dm

1

rd/s/c

bit 4

id_float

1

rd/s/c

bit 5

bdis_acon

(sess_end)

1

rd/s/c

bit 6

cr_int

1

rd/s/c

bit 7

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