HD6417720BP133BV Renesas Electronics America, HD6417720BP133BV Datasheet - Page 845

• Manufacturer Part Number: HD6417720BP133BV
• Description: SH3-DSP, WITH USB AND LCDC, PB-F
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417720BP133BV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 133MHz
• Connectivity: FIFO, I²C, IrDA, MMC, SCI, SD, SIO, SIM, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 117
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Data Converters: A/D 4x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

SH7720 Group, SH7721 Group
24.3.17 Hc Periodic Start Register (USBHPS)
USBHPS has a 14-bit programmable value, which determines the earliest time when the host
controller should start to process the periodic list.
R01UH0083EJ0400 Rev. 4.00
Sep 21, 2010
Bit
31 to 14 ⎯
13 to 0
Bit Name
PS13 to PS0 All 0
Initial
Value
All 0
R/W
R
R/W
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
Periodic Start
This field is cleared after the hardware has reset. Then
this field is set by HCD while the host controller performs
initial settings. The value is roughly calculated as the value
of the USBHFI minus 10%. When USBHFR reaches the
specified value, the processing of the periodic list has a
higher priority than the control/bulk processing.
Consequently, the host controller starts to process the
interrupt list after the completion of the current control/bulk
transaction.
Section 24 USB Host Controller (USBH)
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