FUJITSU MHW2120BS - Manual (Page 80)

Interface
Primitive Name Description
R_IP Reception in progress Current node (host or device) is receiving
payload.
R_OK Reception with no error Current node (host or device) detected no
error in received payload.
R_RDY Receiver ready Current node (host or device) is ready to
receive payload.
SOF Start of frame Start of a frame. Payload and CRC follow to
EOF.
SYNC Synchronization Synchronizing primitive - always idle.
WTRM Wait for frame
termination After transmission of any of the EOF, the
transmitter will transmit WTRM while waiting
for reception status from receiver.
X_RDY Transmission data ready Current node (host or device) has payload
ready for transmission.
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