Block Diagram Of Usb Timer - NEC switch User Manual

INTUSBTM
Note
RESUME RX
f
X
USBCLK
DATATX SETORX
Internal bus
Note As these signals are used internally, confirmation by software is not possible.
Remark f : System clock oscillation frequency
X
UWDERR: Bit 7 of packet receive status register (RXSTAT)
100
CHAPTER 8
Figure 8-3. Block Diagram of USB Timer
Clear circuit
Clock controller
USB timer start reservation
control register (USBTCL)
User's Manual U12978EJ3V0UD
USB FUNCTION
Shift register
Note
JUDGE TX
Note
JUDGE TOKEN
Note
TX MASTER EN
Note
SETRX
Note
OUT RX
In high- In low-
speed mode speed mode
UWDERR