41.12 EHCI: REG06 - AHB Error Status

Control and Status Register, used to read the UTMI registers from the signals below.

Name: UHPHS_INSNREG06
Offset: 0xA8
Reset: 0x00000000
Property: Read/Write

Bit 3130292827262524 
 AHB_ERR        
Access R/W 
Reset 0 
Bit 2322212019181716 
          
Access  
Reset  
Bit 15141312111098 
     HBURST[2:0]Nb_Burst[4] 
Access RRRR 
Reset 0000 
Bit 76543210 
 Nb_Burst[3:0]Nb_Success_Burst[3:0] 
Access RRRRRRRR 
Reset 00000000 

Bit 31 – AHB_ERR AHB Error

System bus error was encountered and erroneous burst characteristics are captured. To clear this field the application must write a 0.

EHCI:

  • When no error, 0 is written to INSNREG06[8:4].
  • When INCR4 and an error occurs, 4 is written to INSNREG06[8:4].
  • When INCR8 and an error occurs, 8 is written to INSNREG06[8:4].
  • When INCR16 and an error occurs, 16 is written to INSNREG06[8:4].
  • Other values except 4, 8, and 16 are not written to INSNREG06[8:4].

OHCI:

  • When no error, 0 is written to INSNREG06[8:4].
  • When INCR4 and error occurs, 4 is written to INSNREG06[8:4].
  • Other values except 4 are not written to INSNREG06[8:4].

Bits 11:9 – HBURST[2:0] Burst Value

Value of the control phase at which the AHB error occurred.

This field applies to enabled incremental bursts only.

Bits 8:4 – Nb_Burst[4:0] Number of Bursts

Number of beats expected in the burst at which the AHB error occurred. Valid values are 0 to 16.

This field applies to enabled incremental bursts only.

Bits 3:0 – Nb_Success_Burst[3:0] Number of Successful Bursts

Number of successfully completed beats in the current burst before the AHB error occurred.

This field applies to enabled incremental bursts only.