Lucent Technologies MN10285K User Manual
Timers
8-Bit Timer Control Registers
MN102H75K/F75K/85K/F85K LSI User Manual
Panasonic Semiconductor Development Company
87
Panasonic
4.6
8-Bit Timer Control Registers
Table 4-2 shows the registers used to control the 8-bit timers. A binary counter
(TMnBC), a time base counter (TMnBR), and a timer mode register (TMnMD) is
associated with each 8-bit timer.
associated with each 8-bit timer.
TM0BC–TM3BC: Timer n Binary Counter
x’00FE00’–x’00FE03’
TM0BR–TM3BR: Timer n Base Register
x’00FE10’–x’00FE13’
TM0MD–TM3MD: Timer n Mode Register
x’00FE20’–x’00FE23’
TMnEN: TMnBC count enable
0: Disable / 1: Enable
TMnLD: TMnBR value load to TMnBC
0: Do not load value / 1: Load value
TMnS[1:0]: Timer n clock source select
See table 4-1 on page 78 for clock sources. 00 = clock source 0, 01 = clock
source 1, 10 = clock source 2, and 11 = clock source 3.
source 1, 10 = clock source 2, and 11 = clock source 3.
Table 4-2 8-Bit Timer Control Registers
Register
Address
R/W
Description
Timer 0
TM0BC
x’00FE00’
R
Timer 0 binary counter
TM0BR
x’00FE10’
R/W
Timer 0 base register
TM0MD
x’00FE20’
R/W
Timer 0 mode register
Timer 1
TM1BC
x’00FE01’
R
Timer 1 binary counter
TM1BR
x’00FE11’
R/W
Timer 1 base register
TM1MD
x’00FE21’
R/W
Timer 1 mode register
Timer 2
TM2BC
x’00FE02’
R
Timer 2 binary counter
TM2BR
x’00FE12’
R/W
Timer 2 base register
TM2MD
x’00FE22’
R/W
Timer 2 mode register
Timer 3
TM3BC
x’00FE03’
R
Timer 3 binary counter
TM3BR
x’00FE13’
R/W
Timer 3 base register
TM3MD
x’00FE23’
R/W
Timer 3 mode register
Bit:
7
6
5
4
3
2
1
0
TMn
BC7
TMn
BC6
TMn
BC5
TMn
BC4
TMn
BC3
TMn
BC2
TMn
BC1
TMn
BC0
Reset:
0
0
0
0
0
0
0
0
R/W:
R
R
R
R
R
R
R
R
Bit:
7
6
5
4
3
2
1
0
TMn
BR7
TMn
BR6
TMn
BR5
TMn
BR4
TMn
BR3
TMn
BR2
TMn
BR1
TMn
BR0
Reset:
0
0
0
0
0
0
0
0
R/W:
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit:
7
6
5
4
3
2
1
0
TMn
EN
TMn
LD
—
—
—
—
TMn
S1
TMn
S0
Reset:
0
0
0
0
0
0
0
0
R/W:
R/W
R/W
R
R
R
R
R/W
R/W