Rev. 1.0, 02/00, page 748 of 1141
26.16
Servo Interrupt
26.16.1
Overview
The interrupt exception processing of the servo module is started by one of ten factors, i.e. the
drum speed error detector (
×
2), drum phase error detector, capstan speed error detector (
×
2),
capstan phase error detector, HSW timing generator (
×
2), sync detector, and CTL circuit. For
these interrupt factors, see each of their circuit sections of this manual.
For details of exception processing, see section 5, Exception Handling.
26.16.2
Register Configuration
Table 26.27 shows the list of the registers which control the interrupt of the servo section.
Table 26.27 Registers which Control the Interrupt of the Servo Section
Name
Abbrev.
R/W
Size
Initial Value
Address
Servo interrupt
enable register 1
SIENR1
R/W
Byte
H'00
H'D0B8
Servo interrupt
enable register 2
SIENR2
R/W
Byte
H'FC
H'D0B9
Servo interrupt request
register 1
SIRQR1
R/W
Byte
H'00
H'D0BA
Servo interrupt request
register 2
SIRQR2
R/W
Byte
H'FC
H'D0BB
26.16.3
Register Description
Servo Interrupt Enable Register 1 (SIENR1)
0
0
1
0
R/W
2
0
R/W
3
0
4
0
R/W
0
R/W
5
6
0
7
IECAP3
IECAP2
IECAP1
IEHSW2
IEHSW1
0
R/W
IEDRM3
R/W
R/W
R/W
IEDRM2
IEDRM1
Bit :
Initial value :
R/W :
SIENR1 is an 8-bit read/write register that enables or disables interrupts in the servo section. It is
initialized to H'00 by a reset, or in stand-by or module stop mode.