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The following table is a register map of the individual modules. Please note that this table is
still under construction. See the tables in each relevant chapter for more information.
Name
DLM1
IIR1
FCR1
LCR1
MCR1
LSR1
MSR1
SCR1
PSR1
GPIO_outreg
GPIO_inreg
GPIO_outenab
-
TSEI_SECR
TSEI_SESR
TSEI_SEDR
TSEI_DDCR
Master Latency Timer & Cache line Size
PCI1
Configuration
Subsystem ID, Subsystem Vendor ID
Space
Max_Lat, Min_Gnt, Interrupt Pin, Interrupt Line
Reserved, Retry Time Value, TRDY Timeout
pgbCSR
g2pLower0
g2pwindow Lower Address Register 0
g2pUpper0
g2pwindow Upper Address Register 0
g2pLower1
g2pwindow Lower Address Register 1
TX7901 User's Manual (Rev. 6.30T – Nov, 2001)
Chapter 4: Address Maps
Register Description
Divisor Latch 1 (MS)
Interrupt Identification Register 1
FIFO Control Register 1
Line Control Register 1
Modem Control Register 1
Line Status Register 1
Modem Status Register 1
Scratch Register 1
Pre-scaler Register 1
SPI (TSEI) and GPIO Base Address 0x1E00_9000
General-purpose I/O Register
General-purpose I/O Register
General-purpose I/O Register
Reserved
Control Register
Status Register
Data Register
Data Direction Register
PGB1 (Optional) Base Address 0x1E00_A000
Device & Vendor ID Register
Status & Command Register
Class Code, Revision ID Register
BIST, Header Type,
Memory Base Address[0]
Memory DAC Base Address[0]
Memory Base Address[1]
Memory DAC Base Address[1]
Memory Base Address[2]
Memory DAC Base Address[2]
Reserved
XX,XX,XX,XX
Reserved, 0xDC
Reserved
I/O Base Address [0]
Reserved
Pre-existing features, 0xE401
Pre-existing features
Reserved, p2gBase3[35:32], 0x0002
p2gBase3[31:0]
Reserved
PGB Control and Status Register
Address
0x1E00_8004
0x1E00_8008
0x1E00_8008
0x1E00_800C
0x1E00_8010
0x1E00_8014
0x1E00_8018
0x1E00_801C
0x1E00_8020
0x1E00_9000
0x1E00_9004
0x1E00_9008
0x1E00_900C
0x1E00_9010
0x1E00_9014
0x1E00_9018
0x1E00_901C
0x1E00_A000
0x1E00_A004
0x1E00_A008
0x1E00_A00C
0x1E00_A010
0x1E00_A014
0x1E00_A018
0x1E00_A01C
0x1E00_A020
0x1E00_A024
0x1E00_A028
0x1E00_A02C
0x1E00_A030
0x1E00_A034
0x1E00_A038
0x1E00_A03C
0x1E00_A040
0x1E00_A044
0x1E00_A048 – 0x1E00_A0D8
0x1E00_A0DC
0x1E00_A0E0
0x1E00_A0E4
0x1E00_A0E8
0x1E00_A0EC - 0x1E00_A0FF
0x1E00_A100
0x1E00_A108
0x1E00_A110
0x1E00_A118
4-11
R/W
Size(b)
R/W
8
R/O
8
W/O
8
R/W
8
R/W
8
R/O
8
R/W
8
R/W
8
R/W
8
R/W
8
R/O
8
R/W
8
R/W
8
R/W
8
R/W
8
R/W
8
R
32
R/W
32
R
32
R/W
32
R/W
32
R/W
32
R/W
32
R/W
32
R/W
32
R/W
32
R
32
R/W
32
R
32
R
32
R/W
32
R/W
32
R/W
32
R/W
32
R/W
32
R/W
32
R/W
64
R/W
64
R/W
64
R/W
64
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