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LPC2921 数据表(PDF) 21 Page - NXP Semiconductors

部件名 LPC2921
功能描述  ARM9 microcontroller with CAN, LIN, and USB device
PDF  81 Pages
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制造商  PHILIPS [NXP Semiconductors]
网页  http://www.nxp.com
标志 PHILIPS - NXP Semiconductors

LPC2921 数据表(HTML) 21 Page - NXP Semiconductors

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LPC2921_2923_2925_0
© NXP B.V. 2008. All rights reserved.
Preliminary data sheet
Rev. 00.01 — 24 October 2008
21 of 81
NXP Semiconductors
LPC2921/2923/2925
ARM9 microcontroller with CAN and LIN
6.10.2 Pin description
6.10.3 Clock description
Access to the USB registers is clocked by the CLK_SYS_USB, derived from
BASE_SYS_CLK, see Section 6.7.2. The CGU1 provides an independent base clock to
the USB block, BASE_USB_CLK (see Section 6.15.3).
Table 11.
USB device port pins
Pin name
Direction
Description
USB_VBUS
I
USB_VBUS status input. When this function is not enabled
via its corresponding PINSEL register, it is driven HIGH
internally.
USB_D+
I/O
Positive differential data
USB_D
−
I/O
Negative differential data
USB_CONNECT
O
SoftConnect control signal
USB_UP_LED
O
GoodLink LED control signal



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