HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 821

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

23.4
23.4.1
Figures 23.2 and 23.3 show example connections of USB function controller and transceiver.
Figures 23.2 shows connections when using the on-chip USB transceiver. Figures 23.3 shows
connections when not using the on-chip USB transceiver. When using the USB function
controller, the signals must be input to the cable connection monitor pin UJBF_VBUS. The
USBF_VBUS pin is multiplexed with the USB1_ovr_current pin, and writing 1 to bit 0
(USB_SEL) of UTRCTL selects the USBF_VBUS pin functions. According to the status of the
USBF_VBUS pin, the USB function controller recognizes whether the cable is
connected/disconnected. Also, pin D+ must be pulled up in order to notify the USB host/hub that
the connection is established. The sample circuits in figures 23.2 and 23.3 use the USB1_pwr_en
pin for pull-up control.
Figure 23.2
Examples of External Circuit
Example of the Connection between USB Function Controller and Transceiver
This LSI
Example 1 of Transceiver Connection for USB Function Controller
USB function
USB1d_SUSPEND
USB1d_TXDPLS
USB1d_SPEED
USB1d_TXSEO
USB1d_TXENL
USB1d_DMNS
USB1_pwr_en
USB1d_DPLS
USBF_VBUS
USB1d_RCV
USB1_M
USB1_P
(On-Chip Transceiver is Used)
3.3V
IC1
IC allowing voltage
application when
system power is off
Rev. 3.00 Jan. 18, 2008 Page 759 of 1458
Section 23
27Ω
27Ω
IC2
USB Pin Multiplex Controller
IC allowing voltage
application when
system power is off
1.5kΩ
USB connector
REJ09B0033-0300
5V
VBUS
D+
D−
GND