DRV8809 Datasheet, PDF (16/44 Pages) Texas Instruments – COMBINATION MOTOR DRIVERS WITH DC-DC CONVERTERS

DRV8809
DRV8810
SLVS854A – JULY 2008 – REVISED JULY 2008 ............................................................................................................................................................... www.ti.com
Extended setup (EX-setup) register bits are assigned for protection control, pre TSD, and multiplexer test mode
selection. This register can be accessed only in Setup mode (nSLEEP = L and bit 16 data = H).
BIT NO.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Table 4. Extended Setup Register (EX-setup) Bit Assignment
NAME
Signal select 0
Signal select 1
Signal select 2
Signal select 3
Ignore SD 0
Ignore SD 1
Ignore SD 2
Ignore SD 3
Disable nORT 0
(selective shutdown for
DC-DC Ch-C)
Disable nORT 1
(Selective shutdown for
DC-DC Ch-B)
Disable nORT 2
(Selective shutdown for
DC-DC Ch-A)
Pre TSD 0
Pre TSD 1
Test mux 0
Test mux 1
Test mux 2
DEFAULT
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
DESCRIPTION
Signal selector monitored on LOGIC_OUT
DC-DC OCP detection,
DC-DC voltage supervisor (OVP or UVP),
Motor overcurrent (four H-bridges),
TSD, etc. [shutdown (protection) signals must be latched]
0 = Normal operation, 1 = Ignore DC-DC OCP
0 = Normal operation, 1 = Ignore DC-DC voltage supervisor
0 = Normal operation, 1 = Ignore motor OCP
0 = Normal operation, 1 = Ignore thermal shutdown
0 = Normal operation
1 = Disable nORT assertion but shut down DC-DC Ch-C, in case of DC-DC Ch-C
fault condition
Ch-C shutdown is released by nSLEEP rise edge. If fault condition is on the other
channels (with bit = 0), assert nORT and shut down all three DC-DC channels.
This bit is ignored when DCDC_MODE = H or open
0 = Normal operation
1 = Disable nORT assertion but shut down DC-DC channel B, in case of DC-DC
Ch-B fault condition
Ch-B shutdown is released by nSLEEP rise edge. If fault condition on the other
channels (with bit = 0), assert nORT and shut down all three DC-DC channels.
0 = Normal operation, 1 = Disable nORT assertion but shutdown the DC-DC
Ch-A, in case of DC-DC Ch-A fault condition.
Ch-A shutdown is released by nSLEEP rise edge. If fault condition on the other
channels (with bit is 0), assert nORT and shut down all three DC-DC channels .
0 = Ttsd0 = Ttsd - 20°C, 1 = Ttsd1= Ttsd - 30°C
0 = Pre-TSD (logic) output, 1 = TH_OUT Analog output
Test mode selection, < 2,1,0 > = (0,0,0) Normal operation
(0,0,1) TSD control – 1,
(0,1,0) TSD control – 2, (0,1,1) OSC monitor enable,
16
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