6
TMC211 DATASHEET (V. 1.04 / January 7, 2005)
2.4 LIN Interface
Communication between a host and the TMC211 takes places via the bi-directional LIN interface.
Motion Instructions and diagnostic information are provided to or from the Main Control block. It is
possible to connect up to 128 devices on the same bus. Slave addresses are programmable via OTP
memory or external pins. The LIN interface implements the MAC and LLC layers according to the OSI
reference model.
2.5 Miscellaneous
Besides the main blocks the TMC211 contains the following:
•
•
an internal charge pump is used to drive the high side transistors.
an internal oscillator running at 4 MHz +/- 10% to clock the LIN protocol handler, the positioning
unit, and the main control block
•
•
•
internal voltage reference for precise referencing
a 5 Volts voltage regulator to supply the digital logic
protection block featuring Thermal Shutdown, Power-On-Reset, etc.
2.6 Pin and Signal Descriptions
1
20
19
18
17
16
15
14
13
12
11
HW0
SWI
2
HW1
VBAT
OA1
GND
OA2
OB1
GND
OB2
VBAT
VCP
3
VDD
4
GND
5
TST
6
LIN
7
GND
8
HW2
9
CPN
10
CPP
Pin
HW0
HW1
VDD
GND
TST
SOIC20
Description
1
2
3
hard-wired LIN address bit #0 input
hard-wired LIN address bit #1 input
Internal supply (needs external decoupling capacitor)
4,7,14,17 ground, heat sink
5
6
test pin (to be tied to ground in normal operation)
LIN
LIN-bus connection
HW2
CPN
CPP
VCP
VBAT
OB2
OB1
OA2
OA1
SWI
8
hard-wired LIN address bit #2 input
negative connection of external charge pump capacitor
positive connection of external charge pump capacitor
connection of external charge pump filter capacitor
battery voltage supply
9
10
11
12,19
13
15
16
18
20
negative end of phase B coil
positive end of phase B coil
negative end of phase A coil
positive end of phase A coil
reference switch input
Table 1: TMC211 Signal Description
Copyright © 2004-2005 TRINAMIC Motion Control GmbH & Co. KG
TRINAMIC [ TRINAMIC MOTION CONTROL GMBH & CO. KG. ]
