Infineon Technologies TC1796 - 13.10.8 Emulator Address Select Register, EMUAS

TC1796
System Units (Vol. 1 of 2)
LMB External Bus Unit
User’s Manual 13-101 V2.0, 2007-07
EBU, V2.0
Note: When in external boot mode (see Page 13-21), the reset value of BUSAP0 is
overwritten automatically (subsequent to the release of reset) as a result of the
external Boot Configuration Value fetch.
13.10.8 Emulator Address Select Register, EMUAS
EBU_EMUAS
EBU Emulator Address Select Register
(160
H
) Reset Value: DE00 0031
H
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BASE
rw
1514131211109876543210
BASE ALTSEG MASK 0
ALT
EN
AB
REG
EN
AB
rw rw rw r rw rw
Field Bits Type Description
REGENAB 0rwMemory Region Enable
0
B
Memory region is disabled.
1
B
Memory region is enabled (default after reset).
ALTENAB 1rwAlternate Segment Comparison Enable
0
B
ALTSEG is never compared to LMB address
(default after reset).
1
B
ALTSEG is always compared to LMB address.
MASK [7:4] rw Memory Region Address Mask
Specifies the number of right-most bits in the base
address starting at bit 26, which should be included in
the address comparison. Bits [31:27] will always be
part of the comparison.
ALTSEG [11:8] rw Memory Region Alternate Segment
Alternate segment to be compared to LMB address bit
[31:28].
BASE [31:12] rw Memory Region Base Address
Base address to be compared to LMB address in
conjunction with the mask control.