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DRV8809 Datasheet, PDF (17/44 Pages) Texas Instruments – COMBINATION MOTOR DRIVERS WITH DC-DC CONVERTERS
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DRV8809
DRV8810
www.ti.com ............................................................................................................................................................... SLVS854A – JULY 2008 – REVISED JULY 2008
Table 5. LOGIC OUT Selection
EX-setup
NO. REGISTER
(BITS 3–0)
SIGNAL SELECTION MONITORED ON LOGIC OUT
(LISTED SIGNALS TO BE MUXED BY OR)
0 0000 (default) DC-DC OCP_A
DC-DC OVP_A
DC-DC UVP_A
1
0001
DC-DC OCP_B
DC-DC OVP_B
DC-DC UVP_B
DC-DC OCP_C
DC-DC OVP_C
DC-DC UVP_C
2
0010
This bit is ignored when DCDC_MODE pin = H or open.
3
0011
DC-DC OCP_A
DC-DC OCP_B
DC-DC OCP_C
4
0100
DC-DC OVP_A
DC-DC OVP_B
DC-DC OVP_C
5
0101
DC-DC UVP_A
DC-DC UVP_B
DC-DC UVP_C
6
0110
Motor OCP
7
0111
TSD
8
1000
Revision <0> = 1: For this device <2,1,0> = (1,0,1) = 5
9
1001
Revision <1> = 0: For this device
10
1010
Revision <2> = 1: For this device
11
1011
Vendor <0> = 0: For TI <1,0> = TI (0,0), NG (1,0)
12
1100
Vendor <1> = 0: For TI <1,0> = Reserve (0,1), (1,1)
13
1101
Internal oscillator clock (as divided by 32 = 200 kHz)
14
1110
Fixed value as 1 (open-drain output buffer off)
15
1111
Fixed value as 1 (open-drain output buffer off)
SIGNAL POINT
Latched out
Latched out
Latched out
Latched out
Latched out
Latched out
Latched out
Latched out
ROM
ROM
ROM
ROM
ROM
Table 6. Test Mux Selection
NO. BITS 15, 14, 13
DESCRIPTION
0
0, 0, 0
Normal operation
1
0, 0, 1
TSD control 1
At TSD event, shut down only motor driver part, DC-DC keep ON, keep setup register
values, motor shutdown released by nSLEEP = L, no nORT assertion
2
0, 1, 0
TSD control 2
At TSD event, shut down only motor driver part, DC-DC keep ON, keep setup register
values, motor shutdown released by nSLEEP = L, nORT assertion: 40-ms single pulse
3
0, 1, 1
OSC monitor
enable
Provide clock to OSCD_mon and OSCM_mon pins
The serial interfaces communicate to the stepper parameter registers during nSLEEP = H . When nSLEEP = L,
all register values are cleared.(1)(2)
BIT NO.
0
1
2
3
Table 7. Register Settings for Stepper Motor Driving Parameter
NAME
Torque 0
Torque 1
Decay B(D)0
Decay B(D)1
DEFAULT VALUE
0
0
0
0
DESCRIPTION
Torque control, b1 b0
00 equates to 50%
01 equates to 70 %
10 equates to 85%
11 equates to 100%
Specified by design
Decay mode control(1)
B(D)1, B(D)0: 00 equates to 12.5 % (do not use)
01 equates to 37.5 % (do not use)
10 equates to 75%
11 equates to fast decay
Specified by design
(1) This device has issues with stepper motor current setting accuracy.
(2) Decay mode should be 75% or fast decay (do not use mode 00 and 01) in this device.
(1) Decay mode should be 75% or fast decay (do not use mode 00 and 01) in this device.
Copyright © 2008, Texas Instruments Incorporated
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