QADC64E Enhanced Mode Operation
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
14-35
The left justified, signed format corresponds to a half-scale, offset binary, two’s complement data format.
The data is routed onto the IMB3 according to the selected format. The address used to access the table
determines the data alignment format. All write operations to the result word table are right justified.
The three result data formats are produced by routing the RAM bits onto the data bus. The software
chooses among the three formats by reading the result at the memory address which produces the desired
data alignment.
The result word table is read/write accessible by software. During normal operation, applications software
only needs to read the result table. Write operations to the table may occur during test or debug breakpoint
operation. When locations in the CCW table are not used by an application, software could use the
corresponding locations in the result word table as scratch pad RAM, remembering that only 10 bits are
implemented. The result alignment is only implemented for software read operations. Since write
operations are not the normal use for the result registers, only one write data format is supported, which is
right justified data.
NOTE
Some write operations, like bit manipulation, may not operate as expected
because the hardware cannot access a true 16-bit value.
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LSB
15
Field
—
RESULT
SRESET
0000_00
Undefined
Addr
0x30 4A80–4AFF (RJURR_A); 0x30 4E80–4EFF (RJURR_B)
Figure 14-17. Right Justified, Unsigned Result Format (RJURR)
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LSB
15
Field
S
1
1
S = Sign bit.
RESULT
—
SRESET
Undefined
00_0000
Addr
0x30 4B00–4B7F (LJSRR_A); 0x30 4F00–4F7F (LJSRR_B)
Figure 14-18. Left Justified, Signed Result Format (LJSRR)
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LSB
15
Field
RESULT
—
SRESET
Undefined
00_0000
Addr
0x30 4B80–4BFF (LJURR_A); 0x30 4F80–4FFF (LJURR_B)
Figure 14-19. Left Justified, Unsigned Result Register (LJURR)
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...