參數(shù)資料
型號(hào)： HYB25R144180C
廠商： SIEMENS AG
英文描述： 144-Mbit direct RDRAM(144 Mbit 直接 RDRAM)
中文描述： 144兆位的直接的RDRAM（144兆直接的RDRAM）
文件頁數(shù)： 50/93頁
文件大?。?/td> 919K
代理商： HYB25R144180C
Direct RDRAM
128/144-MBit (256K
×
16/18
×
32s)
Data Book
50
2.00
Figure 28
CNFGA Register
Figure 29
CNFGB Register
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
Control Register: CNFGA
PVER5...0
= 000001
MVER5...0
= mmmmmm
REFBIT2...0
= 100
DBL
1
Address: 023
16
DBL - Doubled-Bank. DBL = 1 means the device uses a
doubled-bank architecture with adjacent-bank
dependency. DBL = 0 means no dependency.
MVER5..0 - Manufacturer Version. Specifies the
manufacturer identification number.
PVER5..0 - Protocol Version. Specifies the Direct
Protocol version used by this device:
0 - Compliant with version 0.62.
1 - Compliant with version 0.7 through this version.
2 to 63 - Reserved.
Read-only register.
REFBIT2..0 - Refresh Bank Bits. Specifies the number
of bank address bits used by REFA and REFP
commands. Permits multi-bank refresh in future
RDRAMs.
Note: In RDRAMs with protocol version 1 PVER[5:0] = 000001,
the range of the PDNX field (PDNX[2:0] in the PDNX register)
may not be large enough to specify the location of the restricted
interval in Figure 47. In this case, the effective
t
S4 parameter must
increase and no row or column packets may overlap the
restricted interval. See Figure 47 and Table 19.
SPD04274
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
Control Register: CNFGB
SVER5...0
= ssssss
CORG4...0
= xxxxx
DEVTYP2...0
= 000
SPT
1
BYT
B
Address: 024
16
DEVTYP2..0 - Device type. DEVTYP = 000 means
that this device is an RDRAM.
SPT - Split-core. SPT = 1 means the core is split,
SPT = 0 means it is not.
BYT - Byte width. B = 1 means the device reads
and writes 9-bit memory bytes. B = 0 means 8 bits.
CORG4..0 - Core organization. This field specifies
the number of bank (3, 4, 5, or 6 bits), row
(9, 10, 11, or 12 bits), and column (5, 6, or 7 bits)
address bits. The encoding of this field will be
specified in a later version of this document.
SVER5..0 - Stepping version. Specifies the mask
version number of this device.
Read-only register.
SPD04255
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