Difference: TrbNetOBUF (1 vs. 3)

Revision 3
27 Nov 2007 - Main.JanMichel
Line: 1 to 1
 
META TOPICPARENT name="TrbNetIOBUF"

Overview

Line: 12 to 12
 

Line Decription
MED_DATAREADY_OUT  
Changed:
<
<
MED_DATA_OUT[0...50] Data word
>
>
MED_DATA_OUT[0...15] Data word
MED_PACKET_NUM_OUT[0..1] Packet number
 
MED_READ_IN  
MED_ERROR_OUT[0..2] Status bits

Internal direction port

Line Decription
INT_DATAREADY_IN  
Changed:
<
<
INT_DATA_IN[0...51] Data word
>
>
INT_DATA_IN[0...15] Data word
INT_PACKET_NUM_IN[0..1] Packet number
 
INT_READ_OUT reading
INT_ERROR_IN[0..2] Status bits
Revision 2
28 Aug 2006 - Main.IngoFroehlich
Line: 1 to 1
 
META TOPICPARENT name="TrbNetIOBUF"

Overview

Line: 27 to 27
 
Line Decription
STAT_LOCKED[0...15] Status of the locking mechanism
CTRL_LOCKED[0...15] Control of the locking mechanism
Changed:
<
<
STAT_BUFFER[0...15] Status of the handshake and buffer control
CTRL_BUFFER[0...15] Status of the handshake and buffer control
>
>
STAT_BUFFER[0...31] Status of the handshake and buffer control
CTRL_BUFFER[0...31] Status of the handshake and buffer control
 

STAT_LOCKED

Line: 42 to 42
 

STAT_BUFFER

PIN Name Description
0-1 TRANSMITTED_BUFFERS Transmitted buffers without ACK
Added:
>
>
16-31 CURRENT_DATA_COUNT Transmitted data words in current buffer
 

CTRL_BUFFER

PIN Name Description
Line: 50 to 51
 
8 SEND_ACK_IN EOB/TRM is killed by my partner IBUF, and ACK should be sent
9 GOT_ACK_IN Got an ACK from the other side
Added:
>
>

Functional description

The TrbNetOBUF is preparing the data for the output from 3 different sources: The data from the input, the EOB and the ACK words (Priority from low to high) The next data word is prepared when the media is reading the current word.

ACK

The ACK is prepared if SEND_ACK_IN is high or a SEND_ACK_IN was registered.

EOB

The EOB is sent if the current_data_count is matching (REC_BUFFER_SIZE_IN+1)**2. The EOB is prepared and for the next cycle CURRENT_DATA_COUNT will be resettet and TRANSMITTED_BUFFERS will be increased (if GOT_ACK_IN was not high in the same cycle)

Normal data word

CURRENT_DATA_COUNT will be increased.

  -- IngoFroehlich - 21 Aug 2006
 
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