DM9620 DAVICOM [Davicom Semiconductor, Inc.], DM9620 Datasheet - Page 44

• Manufacturer Part Number: DM9620
• Description: USB2.0 to 10/100M Fast Ethernet Controller
• Manufacturer: DAVICOM [Davicom Semiconductor, Inc.]

7.1.3 Interface 0 Configuration
Definition: len-byte is 64-byte in full speed mode and 256-byte in high speed mode.
1. Endpoint 1
2. Endpoint 2
3. Endpoint 3
Preliminary
Version: DM9620 -15-DS-P02
February 20, 2012
Data Format
For 3-byte header mode
Data Format
For 4-byte header mode (if pin TXD0 is pull-high)
Second byte
Type: Bulk In
Packet Padload: len-byte
When host accessing EP1.
Type: Bulk Out
Packet Padload: len-byte
When host accessing EP2.
First byte
Second byte
The others
Type: Interrupt In
Packet Load: 8-byte
When host accessing EP3.
Fist byte
Second byte
Third byte
The others
Fist byte
Third byte
Fourth byte
The others
If IN-FIFO is full, device will send len-byte data.
If IN-FIFO isn’t full and Ethernet packet isn’t end, device will send a NAK.
If IN-FIFO isn’t full and Ethernet packet is end, device will send the surplus data in IN-FIFO.
If OUT-FIFO isn’t full, host sends data, device response ACK.
If OUT-FIFO is full, host sends data, device response NAK.
If host sends data less len-byte or zero byte, it means Ethernet packet end.
If no interrupt condition, device response NAK.
If interrupt condition, device will send content back to host.
: Ethernet Receive Packet Status, the bit[7:2] format is same as register 32 (RCSCSR)
: Ethernet Receive Packet byte count low
: Ethernet Receive Packet byte count high
: Ethernet Receive Packet Data
: Ethernet Receive Packet Status, the bit format is same as register 6 (RSR)
: Ethernet Receive Packet Checksum Status, the bit format is same as register 6 (RSR)
: Ethernet Receive Packet byte count low
: Ethernet Receive Packet byte count high
: Ethernet Transmit Packet byte count low
: Ethernet Transmit Packet byte count high
: Ethernet Transmit Packet data
: Ethernet Receive Packet Data
USB2.0 to Fast Ethernet Controller
DM9620
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