am79c974 Advanced Micro Devices, am79c974 Datasheet - Page 137
am79c974
Manufacturer Part Number
am79c974
Description
Pcnettm-scsi Combination Ethernet And Scsi Controller For Pci Systems
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C974.pdf
(153 pages)
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A M E N D M E N T
AMD
Page 44
Change SPRINTEN to LAPPEN in lines 12 and 13.
Page 54
Line 17, change 100% to 10%.
Page 59
Line 12 should read, “When the Am79C974 controller samples its IDSELA or IDSELB input ...” (The original ommitted
“IDSELA”).
Page 62
Column 2, line 30, change “lower two bytes” to “upper two bytes”.
Page 71
Line 15, change “DRCBC” to “DRCVPA”.
Page 76
(Reprinted as pages 13 and 14 of the amendment)
“DMA BLAST command” section has been extensively revised.
Page 77
(Reprinted as page 15 of this amendment)
The description of the CMD1–0 bits at the end of column 2 should read, “These two bits are encoded to represent four
commands: IDLE, BLAST, START, and ABORT.” (The BLAST command was omitted in the original.)
In the table at the bottom, the description of the IDLE command should read, “Resets the DMA block to the IDLE state.
Stops any current transfer. Does not affect status bits or cause an interrupt.”
Pages 78–80
(Reprinted as pages 16–18 of this amendment)
“DMA Scatter-Gather Operation (4K aligned elements)” section has been extensively revised.
Page 81
Delete lines 19 and 20, which read, “The DMA transfer request was aborted (ABORT command, or the Master or
Target Abort).”
Page 92
ABSOLUTE MAXIMUM RATINGS
Line 4: Add “or VSSBS or DVSS” to read “Supply Voltage to AVSS or VSSB or VSSBS or DVSS”
Line 5: Add “VDDBS, DVDD” to read “(AVDD, VDD, VDDB, VDDBS, DVDD)”
Page 92
OPERATING RANGES
Line 3: Add “VDDBS, DVDD” to read “(AVDD, VDD, VDDB, VDDBS, DVDD)”
After Line 7: Add “or VSSBS –0.5 V
VIN
VDDBS +0.5 V” and “or DVSS –0.5 V
VIN
DVDD +0.5 V”
In the DC Characteristics table, VOL (max) for those pins to which IOL1 or IOL2 applies is 0.55 V (to comply with the PCI
specification) rather than 0.45 V. Also, VOL (max) for those pins to which IOL3 applies is 0.4 V rather than 0.45 V.
Am79C974
3
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