mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 733

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

Reset
33.3.2 Modulus Register (PDBx_MOD)
Addresses: PDB0_MOD is FFFF_8540h base + 4h offset = FFFF_8544h
Freescale Semiconductor, Inc.
Bit
W
R
Reserved
31
0
PDBIE
PDBIF
CONT
MULT
LDOK
Field
3–2
30
6
5
4
1
0
0
29
0
28
0
PDB Interrupt Flag
This bit is set when the counter value is equal to the IDLY register. Writing zero clears this bit.
PDB Interrupt Enable.
This bit enables the PDB interrupt. When this bit is set and DMAEN is cleared, PDBIF generates a PDB
interrupt.
0
1
This read-only bit is reserved and always has the value zero.
Multiplication Factor Select for Prescaler
This bit selects the multiplication factor of the prescaler divider for the counter clock.
00
01
10
11
Continuous Mode Enable
This bit enables the PDB operation in Continuous mode.
0
1
Load OK
Writing 1 to this bit updates the internal registers of MOD, IDLY, CHnDLYm, DACINTx, and POyDLY with
the values written to their buffers. The MOD, IDLY, CHnDLYm, DACINTx, and POyDLY will take effect
according to the LDMOD.
After 1 is written to LDOK bit, the values in the buffers of above registers are not effective and the buffers
cannot be written until the values in buffers are loaded into their internal registers.
LDOK can be written only when PDBEN is set or it can be written at the same time with PDBEN being
written to 1. It is automatically cleared when the values in buffers are loaded into the internal registers or
the PDBEN is cleared. Writing 0 to it has no effect.
27
0
PDB interrupt disabled
PDB interrupt enabled
PDB operation in One-Shot mode
PDB operation in Continuous mode
26
0
Multiplication factor is 1
Multiplication factor is 10
Multiplication factor is 20
Multiplication factor is 40
25
0
24
0
0
MCF51JF128 Reference Manual, Rev. 2, 03/2011
PDBx_SC field descriptions (continued)
23
0
22
0
21
0
20
0
19
0
18
0
Preliminary
17
0
16
0
15
1
Description
14
1
13
1
12
1
Chapter 33 Programmable Delay Block (PDB)
11
1
10
1
1
9
MOD
1
8
1
7
1
6
1
5
4
1
1
3
1
2
1
1
733
1
0