HD6417727F100CV Renesas Electronics America, HD6417727F100CV Datasheet - Page 776

• Manufacturer Part Number: HD6417727F100CV
• Description: SH3-DSP, LEAD FREE
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417727F100CV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: FIFO, SCI, SIO, SmartCard, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 104
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.6 V ~ 2.05 V
• Data Converters: A/D 6x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 240-QFP Exposed Pad, 240-eQFP, 240-HQFP
• Cpu Family: SuperH
• Device Core Size: 32b
• Frequency (max): 100MHz
• Interface Type: SCI/USB
• Program Memory Size: Not Required
• Total Internal Ram Size: 16KB
• # I/os (max): 104
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 1.8/3.3V
• Operating Supply Voltage (max): 2.05/3.6V
• Operating Supply Voltage (min): 1.6/2.6V
• On-chip Adc: 6-chx10-bit
• On-chip Dac: 2-chx8-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -20C to 75C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 240
• Package Type: HQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Compliant

Section 23 USB Function Controller
23.8
23.8.1
This section describes stall operations in the USB function module. There are two cases in which
the USB function module stall function is used:
• When the application forcibly stalls an endpoint for some reason
• When a stall is performed automatically within the USB function module due to a USB
The USB function module has internal status bits that hold the status (stall or non-stall) of each
endpoint. When a transaction is sent from the host, the module references these internal status bits
and determines whether to return a stall to the host. These bits cannot be cleared by the
application; they must be cleared with a Clear Feature command from the host.
23.8.2
The application uses the USBEPSTL register to issue a stall request for the USB function module.
When the application wishes to stall a specific endpoint, it sets the corresponding bit in
USBEPSTL (1-1 in figure 23.13). The internal status bits are not changed. When a transaction is
sent from the host for the endpoint for which the USBEPSTL bit was set, the USB function
module references the internal status bit, and if this is not set, references the corresponding bit in
USBEPSTL (1-2 in figure 23.13). If the corresponding bit in USBEPSTL is set, the USB function
module sets the internal status bit and returns a stall handshake to the host (1-3 in figure 23.13). If
the corresponding bit in USBEPSTL is not set, the internal status bit is not changed and the
transaction is accepted.
Once an internal status bit is set, it remains set until cleared by a Clear Feature command from the
host, without regard to the USBEPSTL register. Even after a bit is cleared by the Clear Feature
command (3-1 in figure 23.13), the USB function module continues to return a stall handshake
while the bit in USBEPSTL is set, since the internal status bit is set each time a transaction is
executed for the corresponding endpoint (1-2 in figure 23.13). To clear a stall, therefore, it is
necessary for the corresponding bit in USBEPSTL to be cleared by the application, and also for
the internal status bit to be cleared with a Clear Feature command (2-1, 2-2, and 2-3 in figure
23.13).
Rev.6.00 Mar. 27, 2009 Page 718 of 1036
REJ09B0254-0600
specification violation
Stall Operations
Overview
Forcible Stall by Application