Renesas Hitachi H8S/2191, Hardware Manual

Page: 645 / 1065

Rev. 2.0, 11/00, page 618 of 1037
28.2.4 Register Configuration
Table 28.3 shows the register configuration of the servo port section.
Table 28.3 Register Configuration
Name Abbrev. R/W Size Initial Value Address
Servo port mode register SPMR R/W Byte H'40 H'FD0A0
Servo control register SPCR W Byte H'E0 H'FD0A1
Servo data register SPDR R/W Byte H'E0 H'FD0A2
Servo monitor control register SVMCR R/W Byte H'C0 H'FD0A3
CTL gain control register CTLGR R/W Byte H'C0 H'FD0A4
28.2.5 Register Descriptions
(1) Servo Port Mode Register (SPMR)
0
0
1
0
R/W
2
0
R/W
3
0
4
0
R/W
0
R/W
5 6
—
—
7
EXCTLON DPGSW COMP H.Amp.SW C.Rot
0
R/W
CTLSTOP
R/W R/W
CFGCOMP
1
Bit :
Initial value :
R/W :
A register to switch the servo port/general-purpose port, and the CFG input system.
SPMR is an 8-bit read/write register. Bit 6 is reserved; writing in it is invalid. If read is
attempted, an undetermined value is read out. It is initialized to H'40 by a reset or stand-by.
Bit 7: CTLSTOP Bit (CTLSTOP)
Controls whether the CTL circuits are operated or stopped.
Bit 7
CTLSTOP Description
0 CTL circuits operate (Initial value)
1 CTL circuits stop operation
Bit 6: Reserved
This bit is reserved. It cannot be written or read. If read is attempted, an undetermined value is
read out.