mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 1251
mpc823rg
Manufacturer Part Number
mpc823rg
Description
Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MPC823RG.pdf
(1348 pages)
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MPC823 Instruction Set—mftb
mftb
Assembler Syntax
Definition
Operation
Description
FIELD
FIELD
BIT
BIT
16
0
17
1
TBR
18
2
Freescale Semiconductor, Inc.
31
For More Information On This Product,
19
3
if
else if
shown in the table above, then one of the following occurs:
•
•
It is important to note that some implementations may implement
mftb and mfspr identically, therefore, a TBR number must not
match an SPR number.
mftb
Move from Time Base
n
r D
r D
If the TBR field contains any value other than one of the values
•
NOTE: *The order of the two 5-bit halves of the TBR number is reversed.
DECIMAL
n
= 268 then
The system illegal instruction error handler is invoked.
The system supervisor-level instruction error handler is
invoked.
The results are boundedly undefined.
20
268
269
MPC823 REFERENCE MANUAL
4
tbr[5–9] || tbr[0–4]
TBL
TBU
n
Go to: www.freescale.com
= 269 then
21
5
TBR[5–9]
rD,TBR
01000
01000
22
TBR*
6
23
7
TBR[0–4]
24
D
8
01100
01101
25
9
371
10
26
REGISTER
TBU Read
TB Read
NAME
11
27
12
28
TBR
13
29
ACCESS
MOTOROLA
User
User
14
30
15
31
0
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