33.8.10 Length

Name: LENGTH
Offset: 0x22
Reset: 0x0000
Property: PAC Write-Protection, Write-Synchronized

Bit 15141312111098 
        LENEN 
Access R/W 
Reset 0 
Bit 76543210 
 LEN[7:0] 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 

Bit 8 – LENEN Data Length Enable

In 32-bit Extension mode, this bit field enables the length counter.

ValueDescription
0Length counter disabled
1Length counter enabled

Bits 7:0 – LEN[7:0] Data Length

In 32-bit Extension mode, this bit field configures the data length, after which, the flags INTFLAG.RCX or INTFLAG.DRE are raised.

ValueDescription
0x00Reserved if LENEN = 0x1
0x01-0xFFData Length