Datasheet

2.0 Functional Overview (Continued)
11
www.national.com
USBN9603/USBN9604
Physical Layer Interface (PHY)
Media Access Controller (MAC)
Transceiver
24 MHz
Oscillator
Clock
Generator
XIN
XOUT
CLKOUT
Microcontroller Interface
D+ D-
Upstream Port
INTR
V3.3
CS RD WR/SK
A0/ALE/SI
D7-0/AD7-0/SO
EP2
Endpoint0
EP1
EP6EP5
RX
TX
Endpoint/Control FIFOs
VReg
AGND
RESET
V
CC
GND
MODE1-0
StatusControl
SIE
Figure 2. USBN9603/4 Block Diagram
USB Event
Detect
Clock
Recovery
(Parallel and Serial)
DACK
DRQ
PLL
x 2
Obsolete