Lucent Technologies MN10285K, MN102F75K, MN102F85K, MN102H75K 4.6 8-Bit Timer Control Registers

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.
TM0BC–TM3BC: Timer n Binar y 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 page78 for clock sources. 00 = clock source 0, 01 = clock
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:76543 210
TMn
BC7 TMn BC6 TMn BC5 TMn BC4 TMn BC3 TMn BC2 TMn BC1 TMn BC0
Reset:00000000
R/W:RRRRRRRR
Bit:76543 210
TMn
BR7 TMn BR6 TMn BR5 TMn BR4 TMn BR3 TMn BR2 TMn BR1 TMn BR0
Reset:00000000
R/W: R/W R/W R/W R/W R/W R/W R/W R/W
Bit:76543 210
TMn
EN TMn LD ————
TMn
S1 TMn S0
Reset:00000000
R/W:R/WR/WRRRRR/WR/W