876784 Intel, 876784 Datasheet - Page 660
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876784
Manufacturer Part Number
876784
Description
Manufacturer
Intel
Datasheet
1.876784.pdf
(848 pages)
Specifications of 876784
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17.2.7
660
x_CR—Control Register (Modem—D30:F3)
I/O Address:
Default Value:
Lockable:
Software can read the registers at the offsets 08h, 0Ah, and 0Bh by performing a 32-bit
read from the address offset 08h. Software can also read this register individually by
doing a single, 8-bit read to offset 0Bh. Reads across DWord boundaries are not
supported.
7:5
Bit
4
3
2
1
0
Reserved
Interrupt on Completion Enable (IOCE) — R/W. This bit controls whether or not an
interrupt occurs when a buffer completes with the IOC bit set in its descriptor.
0 = Disable
1 = Enable
FIFO Error Interrupt Enable (FEIE) — R/W. This bit controls whether the
occurrence of a FIFO error will cause an interrupt or not.
0 = Disable. Bit 4 in the Status Register will be set, but the interrupt will not occur.
1 = Enable. Interrupt will occur
Last Valid Buffer Interrupt Enable (LVBIE) — R/W. This bit controls whether the
completion of the last valid buffer will cause an interrupt or not.
0 = Disable. Bit 2 in the Status register will still be set, but the interrupt will not occur.
1 = Enable
Reset Registers (RR) — R/W (special).
0 = Removes reset condition.
1 = Contents of all registers to be reset, except the interrupt enable bits (bit 4,3,2 of
Run/Pause Bus Master (RPBM) — R/W.
0 = Pause bus master operation. This results in all state information being retained
1 = Run. Bus master operation starts.
this register). Software needs to set this bit. It must be set only when the Run/
Pause bit is cleared. Setting it when the Run bit is set will cause undefined
consequences. This bit is self-clearing (software needs not clear it).
(i.e., master mode operation can be stopped and then resumed).
MBAR + 0Bh (MICR),
MBAR + 1Bh (MOCR)
00h
No
AC ’97 Modem Controller Registers (D30:F3) (Desktop and Mobile Only)
Description
Attribute:
Size:
Power Well:
Intel
R/W, R/W (special)
8 bits
Core
®
ICH7 Family Datasheet
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