Am79C978 Programmable Registers (Continued)
RAP Addr
Register
PCILAT
Contents
22
PCI Latency (DEFAULT = FF06)
bits [15:8] = MAX_LAT
bits [7:0] = MIN_GNT
25
26
27
SRAMSIZE
SRAMBND
SRAMIC
SRAM Size (DEFAULT = 0000)
bits [7:0] = SRAM_SIZE
SRAM Boundary (DEFAULT = 0000)
bits [7:0] = SRAM_BND
SRAM Interface Control (Default = 0000)
8000PTR TST
4000LOLATRX
bits [5:3] = EBCS, Expansion Bus Clock Source
0000 CLK pin, PCI clock
0008 Time Base Clock
0010 EBCLK pin, Expansion Bus Clock
bits [2:0] = CLK_FAC, Expansion Bus Clock Factor
0000 1/1 clock factor
0001 1/2 clock factor
0002 --
0003 --
28
29
EPADDRL
EPADDRU
Expansion Port Address Lower (Default = 0000)
Expansion Port Address Upper (Default = 0000)
0800
0400
0200
0100
--
--
--
--
0080
0040
0020
0010
--
--
--
--
0008
0004
0002
0001
EPADDRU3
EPADDRU2
EPADDRU1
EPADDRU0
8000
4000
2000
1000
FLASH
LAINC
--
--
30
31
32
EBDATA
STVAL
Expansion Bus Data Port
Software Timer Interrupt Value (DEFAULT = FFFF)
PHY Status and Control (DEFAULT = 0000)
MIICAS
0800
0400
0200
0100
APEP
0080
0040
0020
0010
DANAS
0008
0004
0002
0001
XPHYSP
--
MIILP
--
8000
4000
2000
1000
ANTST
MIIPD
FMDC1
FMDC0
APDW2
APDW1
APDW0
XPHYRST
XPHYANE
XPHYFD
33
MIIADDR
MIIMDR
PHY Address (DEFAULT = 0000)
bits [9:5] = PHYAD, Physical Layer Device Address
bits [4:0] = REGAD, Auto-Negotiation Register Address
34
35
36
37
38
39
40
41
42
43
44
45
46
47
PHY Data Port
PCI Vendor ID PCI Vendor ID Register (DEFAULT = 1022h)
PMC Alias
DATA 0
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
PMR 1
PCI Power Management Capabilities (DEFAULT = 0000)
PCI Data Register Zero Alias Register (DEFAULT = 0000)
PCI Data Register One Alias Register (DEFAULT = 0000)
PCI Data Register Two Alias Register (DEFAULT = 0000)
PCI Data Register Three Alias Register (DEFAULT = 0000)
PCI Data Register Four Alias Register (DEFAULT = 0000)
PCI Data Register Five Alias Register (DEFAULT = 0000)
PCI Data Register Six Alias Register (DEFAULT = 0000)
PCI Data Register Seven Alias Register (DEFAULT = 0000)
OnNow Pattern Matching Register 1
PMR 2
OnNow Pattern Matching Register 2
PMR 3
OnNow Pattern Matching Register 3
218
Am79C978
AMD [ AMD ]
