HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 817

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

23.1
The USB multiplex controller controls the data path to USB transceiver from USB host controller
port 1 or USB function controller.
Both USB host port 1 and USB function controller are connected to USB transceiver 1 via
multiplexer that is controlled by UTRCTL register. The USB host controller port 2 and USB
transceiver 2 are connected one-to-one. USB transceiver 1 can be connected to USB host
controller or USB function controller, while USB transceiver 2 can only be connected to the USB
host controller. Because these ports and transceivers are controlled individually, USB transceiver 2
can be connected to either the USB host controller or the USB function controller regardless its
status. The signals to USB transceiver are used as external pins USB1d _**** which are
multiplexed with pins 113 to 123.
Figure 23.1 shows the connections between the on-chip USB host controller of this LSI, the USB
function controller, and the on-chip 2-port USB transceiver.
USB function
Port 2
Port 1
Port 1
USB host
Features
transceiver
transceiver
transceiver
Power
Power
Power
Control
Control
Control
Section 23
Control
ovr_current
Figure 23.1
Transceiver signal
pwr_en
Transceiver signal
VBUS
ovr_current
pwr_en
Block Diagram of USB PIN Multiplexer
USB Pin Multiplex Controller
pull-up control pin
Selector
host/function
ovr_current/
multiplexer
transceiver
multiplexer
multiplexer
pwr_en/
signals
VBUS
USB
Selector
USB digital signal
transceiver
transceiver
USB
USB
2
1
Rev. 3.00 Jan. 18, 2008 Page 755 of 1458
Section 23
USB Pin Multiplex Controller
USB2_pwr_en
USB2_ovr_current
USB2_P
USB2_M
USB1_pwr_en/USBF_UPLUP
USB1_ovr_current/
USBF_VBUS
USB1d_****
USB1_P
USB1_M
REJ09B0033-0300