TMP92CF30
2009-06-15
92CF30-163
(6)
Timing adjustment function for control signals
This function allows for the timing adjustment of the rising and falling edges of the
CSn
,
CSZx
,
CSXx
, R/
W
,
RD
,
WRxx
,
SRWR
and
SRxxB
signals based on the setup and hold
time requirements of memories.
As for the
CSn
,
CSZx
,
CSXx
and R/
W
signals, and also for the
WRxx
,
SRWR
and
SRxxB
signals (generated in a write cycle), their timing can be adjusted for only one CS space. As
for the
RD
and
SRxxB
signals (generated in a read cycle), their timing can be adjusted
individually for each of all CS spaces. As for the CS and EX spaces for which the timing
adjustment is not performed, the buses connected to them operate with basic bus timing.
(Refer to (7).)
This function can not be used while the BnCSH<BnREC> bit is enabled.
The control signals of SDRAM can be adjusted by setting up the SDRAM controller.
CSTMGCR<TxxSEL1:TxxSEL0>, WRTMGCR<TxxSEL1:TxxSEL0>
00
Change the bus timing for CS0 space
01
Change the bus timing for CS1 space
10
Change the bus timing for CS2 space
11
Change the bus timing for CS3 space
CSTMGCR<TAC1:TAC0>
00
TAC
=
0
×
1/f
SYS
(Default)
01
TAC
=
1
×
1/f
SYS
10
TAC
=
2
×
1/f
SYS
11 Reserved
TAC:The delay from A23-A0 to CSn, CSZx, CSXx, R/W.
WRTMGCR<TCWS/H1:TCWS/H0>
00
TCWS/H
=
0.5
×
1/f
SYS
(Default)
01
TCWS/H
=
1.5
×
1/f
SYS
10
TCWS/H
=
2.5
×
1/f
SYS
11
TCWS/H
=
3.5
×
1/f
SYS
TCWS:The delay from CSn to WRxx,SRWR,SRxxB.
TCWH:The delay from WRxx,SRWR,SRxxB to CSn.
RDTMGCR0/1<BnTCRH1:BnTCRH0>
00
TCRH
=
0
×
1/f
SYS
(Default)
01
TCRH
=
1
×
1/f
SYS
10
TCRH
=
2
×
1/f
SYS
11
TCRH
=
3
×
1/f
SYS
TCRH:The delay from RD,SRxxB to CSn.
Summary of Contents for TLCS-900/H1 Series
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