BU6569GVW Datasheet, PDF (11/17 Pages) Rohm – Camera Image Processor with ADPCM / MIDI / MP3 / AAC / HE-AAC Audio

BU6569GVW
Technical Note
1.2 Register (including RAM via register) write timing.
tWC
A2,A1
CSB（WRB）
tAS
tAH
Address Input
tCS
tCH
WRB（CSB）
RDB
D[15:0]
tWW
tDS
Write
tWAIT
tDH
Data
Symbol
Table 1.2 BU6569GVW timing conditions（RAM, register write cycle）
Details
MIN. TYP.
tWC
Write cycle time
80
-
tAS
Address setup time before WRB(CSB) falling
-7
-
tAH
Address hold time after WRB(CSB) rising
-1
-
tCS
CSB(WRB) input setup time before WRB(CSB) falling
0
-
tCH
CSB(WRB) input hold time after WRB(CSB) falling
0
-
tWW
WRB(CSB) active time width
45
-
tWAIT
Wait time from WRB(CSB) rising to the next WRB(CSB) or to RDB falling
5.5
-
tDS
Data setup time before WRB(CSB) rising
40
-
tDH
Data hold time after WRB(CSB) rising
-1
-
＊Regulation all at threshold of VDDIO1/2（VDD=1.50V,VDDIO=3.30V,GND=0V,Ta=25℃）
＊It is possible to use it with either CSB or WRB active. However, either of them must do LOW pulse operation.
MAX. Unit
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
1.3 Register (including RAM via register) read timing.
A2,A1
CSB（RDB）
WRB
RDB（CSB）
D[15:0]
tAS
tCS
tROE
tRC
Address Input
tRD
Read Data
tAH
tCH
tWAIT
tROD
Symbol
Table 1.3-1 BU6569GVW timing conditions (RAM, register read cycle)
Details
MIN. TYP. MAX. Unit
tRC
Read cycle time
110
-
-
ns
tAS
Address setup time before RDB(CSB) falling
-7
-
-
ns
tAH
Address hold time after RDB(CSB) rising
-1
-
-
ns
tCS
CSB(RDB) input setup time before RDB(CSB) falling
0
-
-
ns
tCH
CSB(RDB) input hold time after RDB(CSB) rising
0
-
-
ns
tRD
Access time after RDB(CSB) falling
-
-
70
ns
tWAIT
Wait time from RDB(CSB) falling to the next RDB(CSB) falling or to WRB falling
5.5
-
-
ns
tROE,tROD
Data output enable time after RDB(CSB) rising, Data output disable time after RDB(CSB) falling
-
-
＊Regulation all at threshold of VDDIO1/2（VDD=1.50V,VDDIO=3.30V,GND=0V,Ta=25℃）
＊It is possible to use it with either CSB or WRB active. However, either of them must do LOW pulse operation.
15
ns
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
11/16
2009.07 - Rev.A