COM20022I3V-HD SMSC, COM20022I3V-HD Datasheet - Page 77

• 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

10 Mbps ARCNET (ANSI 878.1) Controller with 2Kx8 On-Board RAM
Datasheet
SMSC COM20022I 3V
t10
t11
t12
t13
t14
t15
t16
t17
t18
t19
t20
t21
t22
t23
t24
t25
t26
t1
t2
t3
t4
t5
t6
t7
t8
t9
nDACK Inactive Pulse Width
The First DREQ Assertion Delay After Writing Low
Pointer
DREQ Assert Delay from nREFEX Active at
Programmable Burst Transfer Mode
DREQ Assertion Delay from Write/Read Inactive at
Non-Burst Transfer Mode
DREQ Assertion Delay from nDACK
Inactive due to Timeout of Gate Timer at
Programmable Burst Transfer Mode
DREQ Negation Delay from Write/Read Active
DREQ Negation Delay from TC and Write/Read
Active
Data Access Time from Read Active
Data Float Delay from Read Inactive
nREFEX Active Pulse Width
Write Active Pulse Width
Read Active Pulse Width
Active Pulse Overlap Width between TC and
Write/Read
Write/Read Inactive Pulse Width
Write Cycle Interval Period
Read Cycle Interval Period
Data Setup to Write Inactive
Data Hold From Write Inactive
nCS High Setup to nDACK Active
nCS High Hold from nDACK Inactive
DREQ Active Setup to nDACK Active
DIR Setup to nDS Low (Motorola mode only)
DIR Hold from nDS High (Motorola mode only)
nDACK Setup to Write/Read Active
nDACK Hold After Write/Read Inactive
nREFEX Inactive Time
PARAMETER
DATASHEET
CASE1w/1R
CASE2w/2R
CASE1R
CASE2R
Table 8.1 - DMA Timing
GTTM
bit =0
GTTM
bit=1
CASE
1W
CASE
2W
CASE
1R
CASE
2R
Page 77
4Tarb+3
4 Tarb
4Tarb
4Tarb
15Txtl
7Txtl
3Txtl
MIN
100
0nS
20
20
65
60
20
20
30
30
10
20
20
20
10
10
30
0
0
0
0
0
5
Tarb
TYP
5
+40ns
5Tarb
+40ns
16Txtl
+40ns
MAX
8Txtl
30
40
40
40
40
40
20
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Revision 02-27-06
(Note 8.1)
(Note 8.3)
(Note 8.4)
(Note 8.2)
(Note 8.4)
(Note 8.4)
(Note 8.4)
(Note 8.4)
(Note 8.4,
(Note 8.4,
(Note 8.4)
(Note 8.4,
(Note 8.1,
(Note 8.1,
(Note 8.4)
(Note 8.4)
(Note 8.4)
(Note 8.4)
(Note 8.2)
Note 8.5)
Note 8.5)
Note 8.5)
Note 8.4)
Note 8.4,
Note 8.5)
NOTE