參數(shù)資料
型號(hào)： AM79C930VCW
廠商： ADVANCED MICRO DEVICES INC
元件分類： 微控制器/微處理器
英文描述： PCnet-Mobile Single-Chip Wireless LAN Media Access Controller
中文描述： 2 CHANNEL(S), LOCAL AREA NETWORK CONTROLLER, PQFP144
封裝： TQFP-144
文件頁數(shù)： 71/161頁
文件大?。?/td> 691K
代理商： AM79C930VCW
P R E L I M I N A R Y
AMD
71
Am79C930
80188 Core Memory Map Using Scheme “A”, LMCS=1FF8h, UMCS=E038h, MIR0[6]=0
Active
Am79C930
Chip Select
80188 Address
in Memory
Active 80188
Chip Select
Size of
Space
Physical Location of Memory
0 0000h–0 03FFh
LCS
SCE
1 Kbytes
SRAM Memory 0 0000h–0 03FFh
0 0400h–0 041Fh
LCS
none
32 bytes
TIR 0–31
0 0420h–0 042Fh
LCS
none
16 bytes
MIR 0–15
0 0430h–0 043Fh
LCS
XCE
16 bytes
XCE
locations 0–15
0 0440h–0 047Fh
LCS
none
64 bytes
Reserved for future use–access to
these areas is currently undefined
0 0480h–1 FFFFh
LCS
SCE
128K–
SRAM Memory 0 0480h–1 FFFFh
1K–128 bytes
2 0000h–D FFFFh
none
none
768 Kbytes
Undefined
E 0000h–F FFFFh
UCS
FCE
128 Kbytes
Flash Memory 0 0000h–1 FFFFh
The second mapping scheme (scheme “B”) places 32K
of the SRAM, the 32 TIR registers, the 16 MIR registers,
and the 16
XCE
locations into the lowest 32K of memory
space, and then maps the upper 96K of Flash memory
to memory locations 32K through 128K. All 128K of the
Flash memory is also available at the uppermost 128K
memory locations of the 80188 core’s address space.
This scheme allows the LMCS register of the 80188
core be set to 07F8h or 0FF8h or 1FF8h. The UMCS
register of the 80188 core must be set to E038h. Also
required is that bit 6 of the MIR0 register (the mapping
select bit) is set to 1. Note that with mapping scheme
“B”, a maximum of 32K–128 bytes of SRAM space is
available for use. The advantage of mapping scheme
“B” is that when all 80188 firmware can fit into 32K of
Flash memory space and the SRAM memory require-
ment for the application is less than or equal to 32K, then
all 80188 operations occur within a single 64K
memory segment.
80188 Core Memory Map Using Scheme “B”, LMCS=1FF8h, UMCS=E038h, MIR0[6]=1
Active
Am79C930
Chip Select
80188 Address
in Memory
Active 80188
Chip Select
Size of
Space
Physical Location of Memory
0 0000h–0 03FFh
LCS
SCE
1 Kbytes
SRAM Memory 0 0000h–0 03FFh
0 0400h–0 041Fh
LCS
none
32 bytes
TIR 0–31
0 0420h–0 042Fh
LCS
none
16 bytes
MIR 0–15
0 0430h–0 043Fh
LCS
XCE
16 bytes
XCE
locations 0–15
0 0440h–0 047Fh
LCS
none
64 bytes
Reserved for future use–access to
these areas is currently undefined
0 0480h–0 7FFFh
LCS
SCE
32K–
SRAM Memory 0 0480h–1 FFFFh
1K–128 bytes
0 8000h–1 FFFFh
don’t care
FCE
96 Kbytes
Flash Memory 0 8000h–1 FFFFh
2 0000h–D FFFFh
none
none
768 Kbytes
Undefined
E 0000h–F FFFFh
UCS
FCE
96 Kbytes
Flash Memory 0 0000h–1 FFFFh
相關(guān)PDF資料
PDF描述
AM79C940VCW Media Access Controller for Ethernet (MACE)
AM79C940 Media Access Controller for Ethernet (MACE)
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AM79C940KCW Media Access Controller for Ethernet (MACE)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM79C940 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Media Access Controller for Ethernet (MACE)
AM79C940_00 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Media Access Controller for Ethernet (MACE⑩)
AM79C940-16/25 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
AM79C940-16JC 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Node Controller
AM79C940-25JC 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Node Controller
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