參數(shù)資料
型號(hào)： EM4056B6CI2LC
英文描述： ACPI Regulator/Controller for Dual Channel DDR Memory Systems; Temperature Range: 0&degC to 70°C; Package: 28-QFN T&R
中文描述： 模擬雜項(xiàng)
文件頁(yè)數(shù)： 10/14頁(yè)
文件大小： 108K
代理商： EM4056B6CI2LC
EM4056
Copyright
2002, EM Microelectronic-Marin SA
5
www.emmicroelectronic.com
ROM organisation
Address
Datas
Wp
Rp
bit17
bit2
bit1
bit0
0000000
B15
B0
1
0
0000001
B31
B16
1
0
0000010
L7
L0 C7
C0
1
0
B31-B0 unique code number.
L7-L0
8-bit customer ID, standard version = 65hex, 101dec.
C7 – C0
CRC calculated on bits B31 to B0 and L7 to L0.
(CRC block diagram see figure 4).
Note : EM4056 with different customer ID will also have a different unique code number.
Commands structure
Command
Code
ReadRom
MSB
0010
LSB
SelToggle
0100
SelTag
0101
DeselTag
0110
Prot
1000
Read
1010
Write
1100
Add
1101
Comp
1110
Start Arbitration
0001
Continue if “0”
00
Continue if “1”
11
Abort Arbitration
01 or 10
CRC Block Diagram
CRC Generating polynomial = X7+X5+X4+X+1
Fig. 5
In uplink the CRC is calculated on all bits of the command (startbit excluded), MSB first.
In dowlink the CRC is calculated on all bits of the answer, first bit sent by the chip first.
4
7
6
1
0
X
X7
MSB
X1
LSB
X0=1
Exclusive OR
Shift Register
Data Input
2
3
5
X4
X5
相關(guān)PDF資料
PDF描述
EM4069A6CB2RC ACPI Regulator/Controller for Dual Channel DDR Memory Systems; Temperature Range: 0&degC to 70°C; Package: 28-QFN
EM4069A6CI2LC ACPI Regulator/Controller for Dual Channel DDR Memory Systems; Temperature Range: 0&degC to 70°C; Package: 28-QFN T&R
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