MIC2555_06 Datasheet, PDF (22/29 Pages) Micrel Semiconductor – USB – OTG Transceiver

Micrel, Inc.
Device ID Registers
vendor_id
product_id
16
rd
16
rd
MIC2555
MSB -> Higher byte of two byte word
LSB -> Lower byte of two byte word
USB-IF Vendor ID number. Address 00h contains
00h
lower byte of Vendor ID. Address 01h contains upper
byte of Vendor ID.
A number unique to each manufacturer, for each
02h
device type produced. The manufacturer assigns this
number. Address 02h contains lower byte. Address
03h contains upper byte.
Control Register 1
Set & Clear
speed
1
suspend
1
dat_se0
1
test bit
1
bdis_acon_en
1
oe_int_en
1
uart_en
1
uart_io
1
rd/s/c
rd/s/c
rd/s/c
rd/s/c
rd/s/c
rd/s/c
rd/s/c
rd/s/c
set – 04h
clr – 05h
bit 0
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
1
Æset
=
1
1 Æclr = 0
0
=
USB
Low
1 = USB Full Speed mode
Speed
mode
0
=
Full
1 = Low power mode
power
mode
0
=
VP-VM
1 = DAT-SE0 USB mode
USB
mode
Not used
0 = No action.
1 = Attaches pull-up resistor to D+ after detecting
SE0 condition and sets interrupt flag.
0 = OE_INT/ is an input.
1 = OE_INT/ becomes an output and is asserted
LOW when interrupt occurs, if suspend = 1. If
suspend = 0, pin remains an input.
0 = USB mode
1 = UART mode
0 = GPIO pins operate as standard GPIO.
1 = GPIO_0 = 2^nd UART RX
GPIO_1 = 2^nd UART TX
GPIO_2 = standard GPIO
December 2006
22
M9999-121406