cx82100 Conexant Systems, Inc., cx82100 Datasheet - Page 137

• Manufacturer Part Number: cx82100
• Description: Home Network Processor Hnp
• Manufacturer: Conexant Systems, Inc.

8.1
8.1.1
Figure 8-2. USB Transmit Data Flow
101306C
from APB/
DMA I/F
conversion
NRZI
NRZ
to
UBL
UDC Data Path
USB Transmit Data Path (Endpoint IN Channel)
NRZI
NRZ
Conexant Proprietary and Confidential Information
The UDC data path supports USB transmit and receive data.
The USB transmit data flow is illustrated in Figure 8-2.
Buffer
Data
+
-
CX82100 Home Network Processor Data Sheet
payload
xxx
xxx
data
HandShake
0
Generator
CRC16
Data +
1
CRC16
xx xx xxx
1
ST ALL
ACK,
NAK,
xxx
x x x
x x x
x x x
0 = inverting the polarity of the output signal
1 = not inverting the output signal
0
M
U
X
1
xx xx xx xx
0
xxx
xxx
1
Assembly
Token
SETUP
1
OUT ,
SOF,
x x x
x x x
x x x
IN,
xxx x x
xxx
1
complete
xxx
xxx
packet
1
x x x
x x x
x x x
Stuffing
1
Bit
1
stuffing
bit
0
NRZ-to-NRZI
Conversion
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
1
1
Transceiver
Differential
101545_055
to USB
8-3