Espressif ESP8266 Technical Reference page 99

Address RegName
0x0 FRC1_LOAD_ADDRESS
0x4 FRC1_COUNT_ADDRESS frc1_count
0x8 FRC1_CTRL_ADDRESS
0xC FRC1_INT_ADDRESS
0x20 FRC2_LOAD_ADDRESS
0x24 FRC2_COUNT_ADDRESS frc2_count
0x28 FRC2_CTRL_ADDRESS
0x2C FRC2_INT_ADDRESS
0x30 FRC2_ALARM_ADDRESS frc2_alarm
Appendix 4
Signal BitPos Default
frc1_load_value [22:0] 23'b0
[22:0] 23'h7fffff RO
[31:9] 23'b0
frc1_int [8] 1'b0
frc1_ctrl [7:0] 8'b0
[31:1] 30'b0
frc1_int_clr_mask [0] 1'b0
frc2_load_value [31:0] 32'b0
[31:0] 32'b1
[31:9] 23'b0
frc2_int [8] 1'b0
frc2_ctrl [7:0] 8'b0
[31:1] 30'b0
frc2_int_clr_mask [0] 1'b0
[31:0] 32'b0
Timer Registers
SW(R/W) Description
R/W the load value into the counter
the current value of the counter. It is a decreasing
counter.
RO
the status of the interrupt, when the count is
RO
dereased to zero
R/W bit[7]: timer enable
bit[6]: automatically reload, when the counter is
equal to zero
bit[3:2]: prescale-divider, 0: divided by 1, 1: divided
by 16, 2 or 3: divided by 256
bit[0]: interrupt type, 0:edge, 1:level
RO
write to clear the status of the interrupt, if the
R/W
interrupt type is "level"
R/W the load value into the counter
the current value of the counter. It is a increasing
RO
counter.
RO
the status of the interrupt, when the count is equal to
RO
the alarm value
R/W bit[7]: timer enable
bit[6]: automatically reload, when the counter is
equal to zero
bit[3:2]: prescale-divider, 0: divided by 1, 1: divided
by 16, 2 or 3: divided by 256
bit[0]: interrupt type, 0:edge, 1:level
RO
write to clear the status of the interrupt, if the
R/W
interrupt type is "level"
R/W the alarm value for the counter