37.8.26 GMAC IPG Stretch Register

Name: GMAC_IPGS
Offset: 0x0BC
Reset: 0x00000000
Property: -

Bit 3130292827262524 
          
Access  
Reset  
Bit 2322212019181716 
          
Access  
Reset  
Bit 15141312111098 
 FL[15:8] 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 
Bit 76543210 
 FL[7:0] 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 

Bits 15:0 – FL[15:0] Frame Length

Bits FL[7:0] are multiplied with the previously transmitted frame length (including preamble), and divided by FL[15:8]+1 (adding 1 to prevent division by zero). RESULT = FL[7:0] F[15+8]+1

If RESULT > 96 and the IP Stretch Enable bit in the Network Configuration Register (GMAC_NCFGR.IPGSEN) is written to '1', RESULT is used for the transmit inter-packet-gap.