參數(shù)資料
型號: SAA7893HL
廠商: NXP SEMICONDUCTORS
元件分類: 消費家電
英文描述: Super audio media player
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP128
封裝: 14 X 20 MM, 1.40 MM HEIGTH, PLASTIC, SOT-425-1, LQFP-128
文件頁數(shù): 54/66頁
文件大小: 1036K
代理商: SAA7893HL
Philips Semiconductors
SAA7893HL
Super audio media player
Product data
Rev. 02 — 26 February 2003
54 of 66
9397 750 10925
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
12. SDRAM interface
12.1 Writing
Fig 56. SDRAM interface writing.
active
write
address
address
data
ZZZZ
ZZZZ
XX
XX
upper/lower
byte
precharge
nop
clk
D_clk
D_ADDR[13:0]
D_DQ[15:0]
D_RASn
D_CASn
D_Wen
D_UDQM
D_LDQM
MBL632
td
tcmd
taddr
tdata
tdqm
Table 36:
Symbol
t
d
t
cmd
t
addr
t
dqm
Timing numbers of SDRAM interface writing
Parameter
delay from clk to D_clk of SDRAM interface
delay from clk to control signals
delay from clk to address lines
delay from clk to D_UDQM and D_LDQM
signals
delay from clk to data output signals
Conditions
D_clk is clock of SDRAM
Min
3
1
1
1
Max
9
15
15
12
Unit
ns
ns
ns
ns
t
data
1
12
ns
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