MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 135

• Manufacturer Part Number: MPC555CME
• Description: KIT EVALUATION FOR MPC555
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC555CME

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC555
• Data Bus Width: 32 bit
• Interface Type: RS-232
• For Use With/related Products: MPC555
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

MPC555
USER’S MANUAL
FPSCR — Floating-Point Status and Control Register
MSB
FX
16
0
FPSCR[0:12] and FPSCR[21:23] are floating-point exception condition bits. These bits
are sticky, except for the floating-point enabled exception summary (FEX) and float-
ing-point invalid operation exception summary (VX). Once set, sticky bits remain set
until they are cleared by an mcrfs, mtfsfi, mtfsf, or mtfsb0 instruction.
Table 3-4
mal status bits, and which are control bits.
FEX and VX are the logical ORs of other FPSCR bits. Therefore these two bits are not
listed among the FPSCR bits directly affected by the various instructions.
A listing of FPSCR bit descriptions is shown in
FEX
17
FPRF[1:4]
/
1
MPC556
VX
18
2
summarizes which bits in the FPSCR are sticky status bits, which are nor-
OX
19
3
[0], [3:12], [21:23]
UX
20
4
0
[1:2], [13:20]
Table 3-4 FPSCR Bit Categories
[24:31]
SOFT
Bits
VX-
ZX
21
5
CENTRAL PROCESSING UNIT
SQRT
Rev. 15 October 2000
VX-
XX
22
6
RESET: UNCHANGED
RESET: UNCHANGED
VXCVI
VXS-
NAN
23
Status, sticky
Status, not sticky
Control
7
VXISI
VE
24
8
VXIDI
Table
OE
25
Type
9
VXZD
UE
3-5.
10
26
Z
VXIMZ VXVC
ZE
11
27
XE
12
28
FR
13
29
NI
MOTOROLA
14
30
FI
RN
FPRF
LSB
15
31
3-13
0