參數(shù)資料
型號(hào)： FC80960HD32SL2GL
廠商： INTEL CORP
元件分類(lèi)： 微控制器/微處理器
英文描述： 80960HA/HD/HT 32-Bit High-Performance Superscalar Processor
中文描述： 32-BIT, 32 MHz, RISC PROCESSOR, PQFP208
封裝： POWER, QUAD, PLASTIC, QFP-208
文件頁(yè)數(shù)： 14/102頁(yè)
文件大?。?/td> 828K
代理商： FC80960HD32SL2GL
80960HA/HD/HT
8
Advance Information
Datasheet
Table 7.
80960Hx Processor Family Pin Descriptions (Sheet 1 of 4)
Name
Type
Description
A31:2
O
H(Z)
B(Z)
R(Z)
ADDRESS BUS
carries the upper 30 bits of the physical address. A31 is the most
significant address bit and A2 is the least significant. During a bus access, A31:2
identify all external addresses to word (4-byte) boundaries. The byte enable
signals indicate the selected byte in each word. During burst accesses, A3 and A2
increment to indicate successive addresses.
D31:0
I/O
S(L)
H(Z)
B(Z)
R(Z)
DATA BUS
carries 32, 16, or 8-bit data quantities depending on bus width
configuration. The least significant bit of the data is carried on D0 and the most
significant on D31. The lower 8 data lines (D7:0) are used when the bus is
configured for 8-bit data. When configured for 16-bit data, D15:0 are used.
DP3:0
I/O
S(L)
H(Z)
B(Z)
R(Z)
DATA PARITY
carries parity information for the data bus. Each parity bit is
assigned a group of 8 data bus pins as follows:
DP3 generates/checks parity for D31:24
DP2 generates/checks parity for D23:16
DP1 generates/checks parity for D15:8
DP0 generates/checks parity for D7:0
Parity information is generated for a processor write cycle and is checked for a
processor read cycle. Parity checking and polarity are programmable. Parity
generation/checking is only performed for the size of the data accessed.
PCHK
O
H(Q)
B(Q)
R(1)
PARITY CHECK
indicates the result of a parity check operation. An asserted
PCHK indicates that the previous bus read access resulted in a parity check error.
BE3:0
O
H(Z)
B(Z)
R(1)
BYTE ENABLES
select which of the four bytes addressed by A31:2 are active
during a bus access. Byte enable encoding is dependent on the bus width of the
memory region accessed:
32-bit bus:
BE3 enables D31:24
BE2 enables D23:16
BE1 enables D15:8
BE0 enables D7:0
16-bit bus:
BE3 becomes Byte High Enable (enables D15:8)
BE2 is not used (state is undefined)
BE1 becomes Address Bit 1 (A1)
BE0 becomes Byte Low Enable (enables D7:0)
8-bit bus:
BE3 is not used (state is undefined)
BE2 is not used (state is undefined)
BE1 Address Bit 1 (A1)
BE0 Address Bit 0 (A0)
W/R
O
H(Z)
B(Z)
R(0)
WRITE/READ
is low for read accesses and high for write accesses. W/R
becomes valid during the address phase of a bus cycle and remains valid until the
end of the cycle for non-pipelined accesses. For pipelined accesses, W/R
changes state when the next address is presented.
0= Read
1= Write
D/C
O
H(Z)
B(Z)
R(0)
DATA/CODE
indicates that a bus access is a data access or an instruction
access. D/C has the same timing as W/R.
0 = Code
1 = Data
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