3069RF-ZTAT Datasheet, PDF (443/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

11.2.6 Next Data Register B (NDRB)
NDRB is an 8-bit readable/writable register that stores the next output data for TPC output groups
3 and 2 (pins TP₁₅ to TP₈). During TPC output, when an 16-bit timer compare match event
specified in TPCR occurs, NDRB contents are transferred to the corresponding bits in PBDR. The
address of NDRB differs depending on whether TPC output groups 2 and 3 have the same output
trigger or different output triggers.
NDRB is initialized to H'00 by a reset and in hardware standby mode. It is not initialized in
software standby mode.
Same Trigger for TPC Output Groups 2 and 3: If TPC output groups 2 and 3 are triggered by
the same compare match event, the NDRB address is H'FFFA4. The upper 4 bits belong to group
3 and the lower 4 bits to group 2. Address H'FFFA6 consists entirely of reserved bits that cannot
be modified and always read 1.
Address H'FFFA4
Bit
Initial value
Read/Write
7
NDR15
0
R/W
6
NDR14
0
R/W
5
NDR13
0
R/W
4
NDR12
0
R/W
3
NDR11
0
R/W
2
NDR10
0
R/W
1
NDR9
0
R/W
0
NDR8
0
R/W
Next data 15 to 12
These bits store the next output
data for TPC output group 3
Next data 11 to 8
These bits store the next output
data for TPC output group 2
Address H'FFFA6
Bit
7
6
5
4
3
2
1
0
—
—
—
—
—
—
—
—
Initial value
1
1
1
1
1
1
1
1
Read/Write
—
—
—
—
—
—
—
—
Reserved bits
Rev. 5.0, 09/04, page 421 of 978