參數(shù)資料
型號(hào): KFM4GH6Q4M-DEB80
元件分類: PROM
英文描述: 256M X 16 FLASH 1.8V PROM, 70 ns, PBGA63
封裝: 10 X 13 MM, 1 MM HEIGHT, 0.80 MM PITCH, LEAD FREE, FBGA-63
文件頁數(shù): 83/142頁
文件大?。?/td> 2226K
代理商: KFM4GH6Q4M-DEB80
Flex-MuxOneNAND4G(KFM4GH6Q4M-DEBx)
- 45 -
FLASH MEMORY
Flex-MuxOneNAND8G(KFN8GH6Q4M-DEBx)
Flex-MuxOneNAND16G(KFKAGH6Q4M-DEBx)
2.8.19 System Configuration 1 Register F221h (R, R/W)
This Read/Write register describes the system configuration.
F221h, default =40C0h
Read Mode (RM)
Read Mode Information[15]
Burst Read Write Latency (BRWL)
* Default value of BRWL and HF value is BRWL=4, HF=0.
For host frequency over 66MHz, BRWL should be 6 or 7 while HF is 1.
For host frequency range of 40MHz~66MHz, BRWL should be set to 4~7 while HF is 0.
For host frequency under 40MHz, BRWL should be set to 3~7 while HF is 0.
Burst Read Write Latency (BRWL) Information[14:12]
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R/W
R
R/W
R
RM
BRWL
BL
ECC
RDY
pol
INT
pol
IOBE
RDY
Conf
Reserv
ed
HF
WM
BWPS
RM
Read Mode
0
Asynchronous read(default)
1
Synchronous read
Item
Definition
Description
RM
Read Mode
Selects between asynchronous read mode and
synchronous read mode
BRWL
Latency Cycles (Read/Write)
under 40MHz
(HF=0)
40MHz~66MHz
(HF=0)
over 66MHz
(HF=1)
000~010
Reserved
011
3(up to 40MHz. min)
3(N/A)
100 (default)
4
4(min.)
4(N/A)
101
5
5(N/A)
110
6
6(min.)
111
7
Item
Definition
Description
BRWL
Burst Read Latency /
Burst Write Latency
Specifies the access latency in the burst
read / write transfer for the initial access
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