mc68hc908jb8 Freescale Semiconductor, Inc, mc68hc908jb8 Datasheet - Page 159

• Manufacturer Part Number: mc68hc908jb8
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
Freescale Semiconductor
SETUP transactions cannot be stalled by the USB function. A SETUP
received by a control endpoint will clear the ISTALL0 and OSTALL0 bits.
The conditions for receiving a SETUP interrupt are shown in
Figure
ENDPOINT 0 RECEIVE READY TO RECEIVE?
Figure 9-30. SETUP Token Data Flow for Receive Endpoint 0
RECEIVE CONTROL ENDPOINT
RECEIVED FOR ENDPOINT 0?
ERROR FREE DATA PACKET?
(RX0E = 1) AND (RXD0F = 0)
INTERRUPT GENERATED
USB MODULE ENABLED?
INTERRUPT ENABLED?
SET/CLEAR R0SEQ BIT
VALID TRANSACTION
VALID SETUP TOKEN
9-30.
SET SETUP BIT TO 1
SET RXD0F TO 1
Universal Serial Bus Module (USB)
ACCEPT DATA
(RXD0IE = 1)
(USBEN = 1)
Y
Y
Y
Y
Y
N
N
N
N
IGNORE TRANSACTION
FROM USB FUNCTION
FROM USB FUNCTION
NO RESPONSE FROM
Universal Serial Bus Module (USB)
USB FUNCTION
NO RESPONSE
NO RESPONSE
USB Interrupts
Technical Data
NO INTERRUPT
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