4 i/o register description of the hub function, I/o register description of the hub function, Usb block diagram – Freescale Semiconductor MC68HC08KH12 User Manual
Page 116: Figure 9-1, The usb, Figure 9-1. usb block diagram
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MC68HC(7)08KH12
—
Rev. 1.1
116
Freescale Semiconductor
Figure 9-1. USB Block Diagram
9.4 I/O Register Description of the HUB function
The USB hub function provides a set of control/status registers and
sixteen data registers that provide storage for the buffering of data
between the USB hub function and the CPU. These registers are shown
in
.
D0+
D0–
TR
ANSCEIVER
3.3V OUT
CPU BUS
TR
ANSCEIVER
D1+
:
D4+
D1–
:
D4–
ROOR
PORT
DOWNSTR
EAM
PORTS
HUB REPEAT
ER
REGULATOR
SERIAL
FR
AM
E
COUNTER
ENGINE
HUB
CONTR
O
L
LOGIC
REGISTERS
ENDPOINT 0 - 8/8 B (CONTROL)
ENDPOINT 1 - 1 B (INTERRUPT)
ENDPOINT 0 - 8/8 (CONTROL)
ENDPOINT 1/2 - 8 B (TRANSMIT ONLY, INTERRUPT/BULK)
12MHz
USBCLK (FROM CGM)
EMBED
DED D
EVIC
E
CON
TROL
LOGIC
INT
ERFACE
48MHz