LG KE990 Service Manual - Page 47

3. TECHNICAL BRIEF 3.9.2.3 USB The ESM6270 device contains a Universal Serial Bus (USB) interface to provide an efficient interconnect between the mobile phone and a personal computer (PC). The USB interface of the ESM6270 was designed to comply with the definition of a peripheral as specified in USB Specification, Revision 1.1. Therefore, by definition, the USB interface is also compliant as a peripheral with the USB Specification, Revision 2.0. The USB Specification Revision 1.1 defines two speeds of operation, namely low-speed (1.5 Mbps) and full-speed (12 Mbps), both of which are supported by the ESM6270. Name USB_DAT USB_SE0 USB_OE_N USB_VBUS USB_D+ USB_D- Note Data to/from ESM Data to/from ESM Out-Put Enable of Transceiver USB_Power From Host(PC) USB Data+ to Host USB Data- to Host Table. USB Signal Interface D6 D7 GPIO40 GPIO42 N26 USB_DAT_VP N23 USB_SE0_VM N25 USB_OE_TP_N H14 L14 MMC_CMD_GPIO30 MMC_DATA_SDCC_DAT0_GPIO32 M16 C528 4.7u USB_VBUS C540 4.7u R514 47K USB_OE_N USB_CNT_N USB_DAT MSM_USB_D+ USB_SE0 MSM_USB_D- 12 VREG_5V 13 USB_OE_N 14 VSW_5V 15 USB_CTL_N 16 USB_VBUS 17 USB_DAT 18 USB_D_P 19 USB_SE0 20 USB_D_M 21 GP1_DRV_N(MPP7) PM_INT_N PS_HOLD USB_DAT USB_SE0 USB_OE_N MSM_MICROSD_CMD MSM_MICROSD_DATA[0] Figure. Schematic of USB block(ESM6270 Side & PM6635 Side) LGE Internal Use Only - 48 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes