3.3.24. SCIBLKGUARD: [8] (+0x5c)

SCIBLKGUARD is the block guard time register. Table 3.27 shows bit assignments for SCIBLKGUARD. It defines the minimum time in etus between the leading edges of two consecutive characters sent in opposite directions.

For T0, the SCIBLKGUARD minimum time shall be 16 work etus.

For T1, the SCIBLKGUARD minimum time shall be 22 work etus.

Note

For T0, SCIBLKGUARD is effectively offset by 12 etus internally, so the value to be programmed into the SCIBLKGUARD register should be required time period in etus minus 12.

For T1, the SCIBLKGUARD is effectively offset by 11 etus internally, so the value to be programmed into the SCIBLKGUARD register should be required time period in etus minus 11.

Table 3.27. SCIBLKGUARD register read/write bits

Bits

Name

Type

Function

7:0

BLOCKGUARD

Read/write

Defines the minimum time in etus between the leading edges of two consecutive characters sent in opposite directions.

Copyright © 1999 ARM Limited. All rights reserved.ARM DDI 0148B
Non-Confidential