MC68HC908JG16FA MOTOROLA [Motorola, Inc], MC68HC908JG16FA Datasheet - Page 202

• Manufacturer Part Number: MC68HC908JG16FA
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Universal Serial Bus Module (USB)
11.9.1.2 Transmit Control Endpoint 0
Technical Data
202
For a control IN transaction directed at endpoint 0, the USB module will
generate an interrupt by setting the TXD0F flag in the UIR1 register. The
conditions necessary for the interrupt to occur are shown in the flowchart
in
TRANSMIT ENDPOINT READY TO TRANSFER?
Figure
Freescale Semiconductor, Inc.
TRANSMIT ENDPOINT NOT STALLED
TIMEOUT CONDITION OCCURS?
Figure 11-31. IN Token Data Flow for Transmit Endpoint 0
For More Information On This Product,
BY FIRMWARE (ISTALL0 = 0)?
RECEIVED FOR ENDPOINT 0
(TX0E = 1) AND (TXD0F = 0)
USB MODULE ENABLED?
INTERRUPT GENERATED
DATA PID SET BY T0SEQ
ACK RECEIVED AND NO
INTERRUPT ENABLED?
VALID TRANSACTION
TRANSMIT ENDPOINT
VALID IN TOKEN
SET TXD0F TO 1
Universal Serial Bus Module (USB)
11-31.
(USBEN = 1)
SEND DATA
(TXD0IE = 1)
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Y
Y
Y
Y
Y
Y
N
N
N
N
N
FROM USB FUNCTION
FROM USB FUNCTION
NO RESPONSE
NO RESPONSE
SEND STALL
HANDSHAKE
HANDSHAKE
SEND NAK
MC68HC908JG16
NO INTERRUPT
MOTOROLA
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Rev. 1.0