COM20020I-HT SMSC, COM20020I-HT Datasheet - Page 61

• Manufacturer Part Number: COM20020I-HT
• Description: Network Controller & Processor ICs ARCNET Contrllr
• Manufacturer: SMSC

Specifications of COM20020I-HT

• Product: Controller Area Network (CAN)
• Number Of Transceivers: 1
• Data Rate: 5 Mbps
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Supply Current (max): 40 mA
• 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

SMSC COM20020I 3.3V Rev.E
5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
(Internal Clk)
nPULSE2
nPULSE1
nTXEN
RXIN
Above values are for 2.5 Mbps.
Other Data Rates are shown below.
T
*t5, t6 = T
*t2, t7, t10 = T
*t3, t11 = T
**t9 =
**t13 =
DR
t13
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10
t11
t12
is the Data Rate Period
(THESE SIGNALS ARE TO AND FROM THE DIFFERENTIAL DRIVER OR THE CABLE)
4
7
4
5
x T
Beginning Last Bit Time to nTXEN High**
nPULSE2 High to nTXEN Low
nPULSE1 Pulse Width
nPULSE1 Period
nPULSE2 Low to nPULSE1 Low
nPULSE2 High Time
nPULSE2 Low Time
nPULSE2 Period
nPULSE2 High to nTXEN High
(First Rising Edge on nPULSE2 after Last Bit Time)
RXIN Inactive Pulse Width
nTXEN Low to first nPULSE1 Low**
RXIN Active Pulse Width
RXIN Period
x T
DR
t1
DR
DR
/4
DR
DR
+/- 50 nS
Figure 24 – Backplane Mode Transmit or Receive Timing
+/- 50 nS
/2
t9
t4
t10
Parameter
t11
t2
DATASHEET
t5
Page 61
t12
t7
t3
t6
(400 nS BIT TIME)
min
-25
650
450
-25
-25
10
20
LAST BIT
200*
400*
200*
400*
100*
100*
200*
typ
t13
max
750
550
50
50
50
units
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
t8
Revision 09-11-06