Samsung S3C6400X User Manual page 869

USB2.0 HS OTG
DPID
EO_FrNum
USBActEP
NextEp [14:11]
MPS
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
26-62
Specifications and information herein are subject to change without notice.
transmitting any data on an IN endpoint, even if
there data is available in the TxFIFO.
· For isochronous IN endpoints : The core sends out
a zero-length data packet, even if there data is
available in the TxFIFO.
Irrespective of this bit's setting, the core always
responds to SETUP data packets with an ACK
handshake.
[16] RO Endpoint Data PID
Applies to interrupt/bulk IN and OUT endpoints only.
Contains the PID of the packet to be received or
transmitted on this endpoint. The application must
program the PID of the first packet to be received or
transmitted on this endpoint, after the endpoint is
activated. Applications use the SetD1PID and
SetD0PID fields of this register to program either
DATA0 or DATA1 PID.
· 1'b0 : DATA0
· 1'b1 : DATA1
Even/Odd (Micro) Frame
Applies to isochronous IN and OUT endpoints only.
Indicates the (micro)frame number in which the core
transmits/receives isochronous data for this
endpoint. The application must program the
even/odd (micro)frame number in which it intends to
transmit/receive isochronous data for this endpoint
using the SetEvnFr and SetOddFr fields in this
register.
· 1'b0 : Even (micro)frame
· 1'b1 : Odd (micro)frame
[15] R_W_ USB Active Endpoint
SC Applies to IN and OUT endpoints.
Indicates whether this endpoint is active in the
current configuration and interface. The core clears
this bit for all endpoints after detecting a USB reset.
After receiving the SetConfiguration and SetInterface
commands, the application must program endpoint
registers accordingly and set this bit.
R_W Next Endpoint
Applies to non-periodic IN endpoints only.
Indicates the endpoint number to be fetched after the
data for the current endpoint is fetched. The core
can access this field, even when the Endpoint
Enable bit is low. This field is not valid in Slave mode
operation.
[10:0] R_W Maximum Packet Size
Applies to IN and OUT endpoints.
The application must program this field with the
maximum packet size for the current logical
endpoint. This value is in bytes.
S3C6400X RISC MICROPROCESSOR
1'b0
1'b0
4'h0
11'h0