LG U990 Service Manual page 82

3.12.7 USB interface
ZR3453X is a USB 2.0 Device or On-the-Go dual-role device (OTG) with the following
characteristics:
• Complies with USB
• Complies with On-the-Go Supplement 1.0a
• Integrated 45-ohm termination, 1.5Kilohm pull-up and 15-Kilohm pull-down resistors.
• Supports 480-Mbps high-speed, 12-Mbps full-speed and 1.5Mbps low-speed (Host mode only) data
transmission rates.
• Control + 4 endpoints:
- EP0 - two-way Control
- 2-input , 2-output - Bulk, INT or ISO
• Suspend, resume, reset and SOF signaling
USB_SELECT_N
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
(Universal Serial Bus) 2.0 specifications
P3
UDP
P4
UDN
J4
R335 0
UVBUS
P6
UID
M7
URSET
3.4K
1%
MSM_USB_D-
MMP_USB_D-
3. TECHNICAL BRIEF
MMP_USB_D+
MMP_USB_D-
VREG_5V
+VPWR
C336
0.01u
FSUSB30UMX U304
10 1
SEL HSD1+
9 2
VCC HSD2+
8 3
_OE D+
7 4
HSD1- GND
6 5
HSD2- D-
- 83 -
MSM_USB_D+
MMP_USB_D+
USB_D+
USB_D-
LGE Internal Use Only