COM20022I3V-HD SMSC, COM20022I3V-HD Datasheet - Page 78

• Manufacturer Part Number: COM20022I3V-HD
• Description: Network Controller & Processor ICs ARCNET Contrllr
• Manufacturer: SMSC

Specifications of COM20022I3V-HD

• Data Rate: 10 Mbps
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Package / Case: TQFP-48
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Note 8.1 Tarb is the ARBITRATION CLOCK PERIOD. It depends on Topr and SLOWARB bit.
Note 8.2 Txtl is a period of external XTAL oscillation frequency.
Note 8.3 The nREFEX pin must not be Low while nDACK is Low.
Note 8.4 “Write” means write signal and “Read” means read signal. “Write/Read” means write or read signal.
Note 8.5 Conditions of CASE1W, CASE2W, CASE1R and CASE2R are shown below;
Revision 02-27-06
SLOWARB must set to “1” if the data rate is over 5 Mbps. (i.e. 10 Mbps)
Tarb is Topr at SLOWARB=0 and Tarb is 2Topr at SLOWARB=1.
Topr is the period of Operation Clock Frequency. It depends on the CKUP1 and CKUP0 bits.
At INTEL MODE, write signal is nWR and read signal is nRD.
At MOTOROLA MODE, write signal is nDS when DIR is Low and the read signal is nDS when DIR is High.
CASE1W : BUSTMG pin = High
CASE2W : BUSTMG pin = Low
CASE1R : BUSTMG pin = High and RBUSTMG bit = 0
CASE2R : BUSTMG pin = Low or RBUSTMG bit = 1
DATASHEET
Page 78
10 Mbps ARCNET (ANSI 878.1) Controller with 2Kx8 On-Board RAM
SMSC COM20022I 3V
Datasheet