D12320VF25V Datasheet, PDF (349/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

9.2.2 Timer Mode Registers (TMDR)
Channel 0: TMDR0
Channel 3: TMDR3
Bit
:
7
—
Initial value :
1
R/W
:—
6
5
—
BFB
1
0
—
R/W
Section 9 16-Bit Timer Pulse Unit (TPU)
4
3
2
1
0
BFA
MD3
MD2
MD1
MD0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
Channel 1: TMDR1
Channel 2: TMDR2
Channel 4: TMDR4
Channel 5: TMDR5
Bit
:
7
6
5
4
3
2
1
0
—
—
—
—
MD3 MD2 MD1 MD0
Initial value :
1
1
0
0
0
0
0
0
R/W
:—
—
—
—
R/W
R/W
R/W
R/W
The TMDR registers are 8-bit readable/writable registers that are used to set the operating mode
for each channel. The TPU has six TMDR registers, one for each channel. The TMDR registers
are initialized to H'C0 by a reset and in hardware standby mode.
TMDR register settings should be made only when TCNT operation is stopped.
Bits 7 and 6—Reserved: These bits cannot be modified and are always read as 1.
Bit 5—Buffer Operation B (BFB): Specifies whether TGRB is to operate in the normal way, or
TGRB and TGRD are to be used together for buffer operation. When TGRD is used as a buffer
register, TGRD input capture/output compare is not generated.
In channels 1, 2, 4, and 5, which have no TGRD, bit 5 is reserved. It is always read as 0 and
cannot be modified.
Bit 5
BFB
0
1
Description
TGRB operates normally
TGRB and TGRD used together for buffer operation
(Initial value)
Rev.7.00 Feb. 14, 2007 page 315 of 1108
REJ09B0089-0700