TMC2074-NE SMSC, TMC2074-NE Datasheet - Page 48
![no-image](/images/manufacturer_photos/0/6/617/smsc_sml.jpg)
TMC2074-NE
Manufacturer Part Number
TMC2074-NE
Description
Network Controller & Processor ICs Standalone Mode CircLink Cntlr
Manufacturer
SMSC
Datasheet
1.TMC2074-NU.pdf
(116 pages)
Specifications of TMC2074-NE
Product
Controller Area Network (CAN)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 48 of 116
- Download datasheet (701Kb)
Revision 0.2 (10-23-08)
SPRE2-0
(4) When external trigger is entered.
The scenarios above (transmission triggers) can be set in accordance with the SPRE2-0 pin as below.
- Mode 1 (After receiving self-addressed packet + Timer setup)
In this mode, when self-addressed packets are normally received with no CRC error and the timer has
timed-out, the transmission trigger is activated. Namely, the “OR” of these two conditions is removed. The
transmission period during Timer set-up is selected in accordance with the SPRE2-0 pin as shown in Table
6.
- Mode 2 (After receiving self-addressed tokens)
This mode carries out a transmission whenever tokens are received . It is the same procedure used in
Remote Buffer mode as in Peripheral mode. Since self-addressed tokens are transmitted once received, it
is an effective method for transmitting at frequent intervals.
- Mode 3 (External Trigger)
In this mode, the input port status is latched internally when transmission strobes are entered from an
external source, thus activating the transmission trigger. The transmission strobe input pin is the input
port’s least significant pin PI0 (nPISTR). At the beginning, it activates the data latch and transmission
SPRE2-0
000
001
010
011
100
101
110
111
000
001
010
011
100
(1) After receiving self
(3) After receiving Self-addressed tokens
(4) External trigger (Word data security)
Reserved
@40MHZ XTAL
Table 6 - Transmission Period According to Timer Setup
or
(2) Timer Setup
13.1mS
52.4mS
1.6mS
3.3mS
6.6mS
Transmission Trigger Setting
DATASHEET
@20MHZ XTAL
108.4mS
13.1mS
26.2mS
-
3.3mS
6.6mS
addressed packets
Page 48
@32MHZ XTAL
16.4mS
65.6mS
2.0mS
4.1mS
8.2mS
,
@16MHZ XTAL
Trigger Mode name
131.2mS
16.4mS
32.8mS
4.1mS
8.2mS
Dual Mode CircLink™ Controller
Mode 1
Mode 2
Mode 3
SMSC TMC2074
Datasheet
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