LG F1200 Service Manual page 23

3. TECHNICAL BRIEF
(5) Serial Interface
Calypso-Plus has UART-IRDA and two UART Modem Drivers. (UART Modem2 is not
used at F1200).
UART MODEM (UART1)
Resource
TX_MODEM1
RX_MODEM1
CTS_MODEM1
RTS_MODEM1
RTS_MODEM1
UART IRDA (UART -IRDA)
TXIR_IRDA
TX_IRDA
RXIR_IRDA
RX_IRDA
SD_IRDA
(6) USB Interface
The USB_W2FC module supports the implementation of a "Full-Speed" device fully compliant to
USB 1.1 standard. It provides an interface between the MCU and the USB device and handles
USB transactions with minimal MCU intervention.
The USB_W2FC module supports one control endpoint (EP0), up-to fifteen (15) IN endpoints
and up-to fifteen (15) OUT endpoints. The exact endpoint configuration is software
programmable. The specific items configurable for each endpoint are the size in bytes, the
direction (IN, OUT), the type (Bulk/Interrupt or ISO), and the associated endpoint number.
The USB_W2FC module also supports three DMA channels for IN endpoints and three DMA
channels for OUT endpoints for either Bulk/Interrupt or ISO transactions. In operation, the USB
requires a 48MHz clock generated by a dedicated embedded DPLL upon request. The USB
module interface is PVCI compliant. Therefore this module interfaces with the TI MCU RHEA
bus via a RHEA-PVCI bridge.
Calypso-Plus integrates differential drivers to allow a glue-less connection with any host. The
required 3.3V VDD is provided by the VBUS signal taken from the USB connector.
- USB_DP : USB differential (+) line.
- USB_DM : USB differential (-) line.
- USB_PU_EN : USB pull-up enable.
Interconnection
TXD
RXD
CTS
RTS
DSR
TXIR_IRDA
TX
RXIR_IRDA
RX
SD_IRDA
Table 6. UART Interface Spec.
- 22 -
Description
Transmit Data
Receive Data
Clear To Send
Request To Send
Data Set Ready
Infra-Red Transmit Pulse
Transmit Data (UART2)
Infra-Red Receive Pulse
Receive Data (UART2)
IRDA transceiver Shut Down Mode