COM20022I-HT Standard Microsystems (SMSC), COM20022I-HT Datasheet - Page 5

• Manufacturer Part Number: COM20022I-HT
• Manufacturer: Standard Microsystems (SMSC)

Specifications of COM20022I-HT

• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / Rohs Status: Compliant

10 Mbps ARCNET (ANSI 878.1) Controller with 2Kx8 On-Chip RAM
Datasheet
Figure 10.1 - Effect of the EF Bit on the TA/RI Bit........................................................................................................81
List of Tables
Table 5.1 - Typical Media .............................................................................................................................................29
Table 6.1 - Read Register Summary............................................................................................................................31
Table 6.2 - Write Register Summary ............................................................................................................................32
Table 6.3 - Status Register ...........................................................................................................................................37
Table 6.4 - Diagnostic Status Register..........................................................................................................................38
Table 6.5 - Command Register.....................................................................................................................................39
Table 6.6 - Address Pointer High Register ....................................................................................................................40
Table 6.7 - Address Pointer Low Register.....................................................................................................................41
Table 6.8 - Sub Address Register .................................................................................................................................41
Table 6.9 - Configuration Register ................................................................................................................................42
Table 6.10 - Setup 1 Register .......................................................................................................................................43
Table 6.11 - Setup 2 Register .......................................................................................................................................44
Table 6.12 - Bus Control Register.................................................................................................................................45
Table 6.13 - DMA Count Register.................................................................................................................................46
Table 8.1 - DMA Timing................................................................................................................................................76
Table 9.1 - COM20022I 48 Pin TQFP Package Parameters........................................................................................78
SMSC COM20022I
For more details on the ARCNET protocol engine and traditional dipulse signaling schemes,
please refer to the ARCNET Local Area Network Standard, or the ARCNET Designer's
Handbook, available from Datapoint Corporation.
DATASHEET
Page 5
Revision 09-27-07