Standby Control Register 2 (Stbcr2) - Renesas HD6417641 Hardware Manual

6.2.2

Standby Control Register 2 (STBCR2)

The standby control register 2 (STBCR2) is a readable/writable 8-bit register that controls the
operation of modules in the power-down mode. STBCR2 is initialized (to H'00) by a power-on
reset but retains its previous value after a manual reset or a period in the standby mode. Only byte
access is valid.
Bit Bit Name
7 MSTP10
6 MSTP9
5 MSTP8
4 MSTP7

3
Initial
Value R/W Description
0 R/W Module Stop 10
When the MSTP10 bit is set to 1, the supply of the
clock to the H-UDI is halted.
0: H-UDI runs.
1: Clock supply to H-UDI halted.
0 R/W Module Stop 9
When the MSTP9 bit is set to 1, the supply of the
clock to the UBC is halted.
0: UBC runs.
1: Clock supply to UBC halted.
0 R/W Module Stop 8
When the MSTP8 bit is set to 1, the supply of the
clock to the DMAC is halted.
0: DMAC runs.
1: Clock supply to DMAC halted.
0 R/W Module Stop 7
When the MSTP7 bit is set to 1, the supply of the
clock to the DSP is halted.
0: DSP runs.
1: Clock supply to DSP halted.
0 R Reserved
This bit is always read as 0. The write value should
always be 0.
Section 6 Power-Down Modes
Rev. 4.00 Sep. 14, 2005 Page 167 of 982
REJ09B0023-0400