Motorola MPC533 Reference Manual page 925

21.6.9 L-Bus Support Control Register 1
MSB 1
0
Field CTE
Reset
16 17 18
Field CSG
Reset
Addr
Figure 21-22. L-Bus Support Control Register 1 (LCTRL)
Bits Mnemonic
0:2 CTE
3:5 CTF
6:8 CTG
9:11 CTH
12:13 CRWE
14:15 CRWF
16:17 CSG
18:19 CSH
20 SUSG
21 SUSH
22:25 CGBMSK
26:29 CHBMSK
30:31 —
Note: LCTRL1 is cleared following reset.
MOTOROLA
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
2 3 4 5
CTF
0000_0000_0000_0000
19 20 21
CSH SUSG SUSH
0000_0000_0000_0000
Table 21-27. LCTRL1 Bit Descriptions
Description
Compare type, comparator E
Compare type, comparator F
Compare type, comparator G
Compare type, comparator H
Select match on read/write of
comparator E
Select match on read/write of
comparator F
Compare size, comparator G
Compare size, comparator H
Signed/unsigned operating mode for
comparator G
Signed/unsigned operating mode for
comparator H
Byte mask for 1st L-data comparator 0000 all bytes are not masked
Byte mask for 2nd L-data
comparator
Reserved
Chapter 21. Development Support
6 7 8 9 10
CTG CTH
22 23 24 25 26
CGBMSK
SPR 156
0xx not active (reset value)
100 equal
101 less than
110 greater than
111 not equal
0X don't care (reset value)
10 match on read
11 match on write
00 reserved
01 word
10 half word
11 byte
(Must be programmed to word for floating point
compares)
0 unsigned
1 signed
(Must be programmed to signed for floating
point compares)
0001 the last byte of the word is masked
.
.
.
1111 all bytes are masked
Development Support Registers
11 12 13 14
CRWE CRWF
27 28 29 30
CHBMSK UNUSED
Function
—
15
LSB
31
21-55