Freescale Semiconductor PowerQUICC MPC870, Reference Manual

Page: 1289 / 1426

System Development and Debugging
MPC885 PowerQUICC Family Reference Manual, Rev. 2
Freescale Semiconductor 53-39
Table 53-21 describes LCTRL1 fields.
Bit
0 2 3 5 6 8 9 11 12 13 14 15
Field CTE CTF CTG CTH CRWE CRWF
Bit
16 17 18 19 20 21 22 25 26 29 30 31
Field CSG CSH SUSG SUSH CGBMSK CHBMSK —
Reset 0000_0000_0000_0000
R/W R/W
SPR 156
Figure 53-19. Load/Store Support Comparators Control Register (LCTRL1)
Table 53-21. LCTRL1 Field Descriptions
Bits Name Description
0–2 CTE Compare type, comparators E–H. 0xxNot active (reset value)
100 Equal
101 Less than
110 Greater than
111 Not equal
3–5 CTF
6–8 CTG
9–11 CTH
12–13 CRWE Select match on read/write of comparators E and F.
0x Don’t care (reset value)
10 Match on read
11 Match on write
14–15 CRWF
16–17 CSG Compare size, comparator G and H.
00 Reserved
01 Word
10 Half-word
11 Byte
18–19 CSH
20 SUSG Signed/unsigned operating mode for comparator G and H.
0 Unsigned
1 Signed
21 SUSH
22–25 CGBMSK Byte mask for comparator G and H.
0000 All bytes are not masked
0001 Last byte of the word is masked
…
1111 All bytes are masked
26–29 CHBMSK
30–31 — Reserved