參數(shù)資料
型號： MC68LC060RC66
廠商： Freescale Semiconductor
文件頁數(shù)： 77/128頁
文件大?。?/td> 0K
描述： IC MPU 32BIT 66MHZ 206-PGA
標(biāo)準(zhǔn)包裝： 10
系列： M680x0
處理器類型： M680x0 32-位
速度： 66MHz
電壓： 3.3V
安裝類型： 通孔
封裝/外殼： 206-BEPGA
供應(yīng)商設(shè)備封裝： 206-PGA（47.25x47.25）
包裝： 托盤
Signal Description
2-6
M68060 USER’S MANUAL
MOTOROLA
2.3.3 Transfer Line Number (TLN1, TLN0)
These three-state outputs indicate which line in the set of four data or instruction cache lines
is being accessed for normal push and line data read accesses. TLNx signals are undefined
for all other accesses and are placed in a high-impedance state when the processor is not
the bus master.
The TLNx signals can be used in high-performance systems to build an external snoop filter
with a duplicate set of cache tags. The TLNx signals and address bus provide a direct indi-
cation of the state of the data caches and can be used to help maintain the duplicate tag
store. The TLNx signals do not indicate the correct TLN number when an instruction cache
burst fill occurs.
2.3.4 User-Programmable Page Attributes (UPA1, UPA0)
The UPAx signals are three-state outputs. These signals are only valid for normal code,
data, and MOVE16 accesses. For all other accesses (including table search and cache line
push accesses), the UPAx signals are low. When the MC68060 is not the bus master, these
signals are placed in a high-impedance state.
During normal and MOVE16 accesses, if a transparent translation register (TTR) is enabled
and the address and attributes match the TTR values, the UPAx signals are defined by the
logical values of the U1 and U0 bits the TTR. If the MMU is enabled via the translation control
register (TCR) and the address and attributes result in an address translation cache (ATC)
hit, the UPAx signals are defined by the logical values of the U1 and U0 bits in the ATC entry.
If a given logical address is not mapped by the TTRs and if address translation is disabled,
Table 2-3. Normal and MOVE16 Access TMx Encoding
TM2
TM1
TM0
Transfer Modifier
0
Data Cache Push Access
0
1
User Data Access*
0
1
0
User Code Access
0
1
MMU Table Search Data Access
1
0
MMU Table Search Code Access
1
0
1
Supervisor Data Access*
1
0
Supervisor Code Access
1
Reserved
*MOVE16 accesses use only these encodings.
Table 2-4. Alternate Access TMx Encoding
TM2
TM1
TM0
Transfer Modifier
0
Logical Function Code 0
0
1
Debug Access
0
1
0
Reserved
0
1
Logical Function Code 3
1
0
Logical Function Code 4
1
0
1
Debug Pipe Control Mode Access
1
0
Debug Pipe Control Mode Access
1
Logical Function Code 7
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