mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 1251

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mpc823rg

Manufacturer Part Number
mpc823rg
Description
Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
Manufacturer
Freescale Semiconductor, Inc
Datasheet
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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