Renesas Hitachi H8S/2191, Hardware Manual

Page: 749 / 1065

Rev. 2.0, 11/00, page 722 of 1037
Bits 1 and 0: REF30P Division Ratio Selection Bits (DVREF1, DVREF0)
Select the division value of REF30P. If it is read-accessed, the counter value is read out. (The
selected division value is set by the UDF of the counter.)
Bit 1 Bit 0
DVREF1 DVREF0 Description
0 Division in 1 (Initial value) 0
1 Division in 2
0 Division in 3 1
1 Division in 4
(3) X-value Data Register (XDR)
1
13
1
14
1
15 1 0 3 2 5 4 7
0
W
6
0
W
9
0
W
8
0
W
11
0
W
10
0
W
1
W W W W W W
12
— — — —
— — — —
XD1 XD0 XD3 XD2 XD5 XD4 XD7 XD6 XD9 XD8 XD11 XD10
0 0 0 0 0 0
Bit :
Initial value :
R/W :
The X-value data register (XDR) is a 16-bit write-only register. No read is valid. If a read is
attempted, an undefined value is read out. XDR accepts only a word-access. If a byte access is
attempted, operation is not assured.
Set X-value correction data to XDR, except a value which is beyond the cycle of the CTL pulse.
If AT/
08 = 0, TRK/; = 0 was set, CAPREF30 can be generated only by the setting of XDR.
Set an X-value and TRK correction value in PB mode, and an X-value in REC mode.
It is initialized to H'F000 by a reset, stand-by or module stop.
(4) TRK-value Data Register (TRDR)
1
13
1
14
1
15 1 0 3 2 5 4 7
0
W
6
0
W
9
0
W
8
0
W
11
0
W
10
0
W
1
W W W W W W
12
— — — —
— — — —
TRD1 TRD0 TRD3 TRD2 TRD5 TRD4 TRD7 TRD6 TRD9 TRD8 TRD11 TRD10
0 0 0 0 0 0
Bit :
Initial value :
R/W :
The TRK-value data register (TRDR) is a 16-bit write-only register. No read is valid. If a read
is attempted, an undefined value is read out. TRDR accepts only a word-access. If a byte access
is attempted, operation is not assured.
Set a TRK-value correction data to TRDR, except a value which is beyond the cycle of the CTL
pulse. It is initialized to H'F000 by a reset, stand-by or module stop.