Datasheet

TMC8460-BI Datasheet (V100 / 2016-Sep-01)
Copyright © 2016 TRINAMIC Motion Control GmbH & Co. KG 25
3.3 Pinout and Pin Description
The following table contains the pin description and required pin connections of the TMC8460-BI for
the Very Fine Ball Pitch Grid Array package VF400.
Pins not listed in this table are not connected (n.c.) / leave open.
PKG.
Pin
Pin Name / Function
DI
R
Functional Description / Comments
U17
NRST I Low active system reset input
J7
CLK_25MHz I
25MHz Reference Clock Input, connect to clock source
with <25ppm or better, Typically same clock source as
used for the PHYs
U12
CLK_16MHz_OUT O 16MHz auxiliary clock output, enabled by EN_16MHz_OUT
R12
EN_16MHz_OUT I
Enable si
gnal for 16 MHz auxiliary clock output: 0 = off,
1 = on, 16 MHz available at CLK_16MHz_OUT
P19
RESET_OUT O
TMC8460 auxiliary output / active level defined by
RESET_OUT_POL, reset by ECAT (reset register 0x0040),
RESET_OUT has to trigger nRESET, which clears
RESET_OUT.
N16
RESET_OUT_POL I
Configures active level of the RESET_OUT signal: 0 = low
active, 1 = high active
R15
EEPROM_OK O
Signal indicating that EEPROM has been loaded, 0 = not
ready, 1 = EEPROM loaded
F1
PROM_CLK O
External I2C EEPROM clock s
ignal, Use 1K pull up
resistor to 3.3V
G1
PROM_DATA I/O
External I2C EEPROM data signal, Use 1k pull up resistor
to 3V3
G2
PROM_SIZE I
Selects between two different EEPROM sizes since the
communication protocol for EEPROM access changes if
a size > 16k is used (an additional address byte is
required then). 0 = up to 16K EEPROM, 1 = 32 kbit-4Mbit
EEPROM
G4
SYNC_OUT0 O
Distributed Clocks synchronization output
0
, Typically
connect to MCU
H4
SYNC_OUT1 O
Distributed Clocks synchronization output 1, typically
connect to MCU
J17
LATCH_IN0 I
Latch input 0 for distributed clocks, connect to GND if
not used.
K17
LATCH_IN1 I
Latch input 1 for distributed clocks, Connect to GND if
not used.
F14
LED_ERR O
Error Status LED, connect to red LED (Cathode)
0 = LED on, 1 = LED off
H15
LED_LINK_IN O
Link In Port Activity, connect to green LED (Anode)
0 = LED off, 1 = LED on
G14
LED_LINK_OUT O
Link Out Port Activity, connect to green LED (Anode)
0 = LED off, 1 = LED on