DRV8809PAP datasheet(16/44 Pages) TI

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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).

Table 4. Extended Setup Register (EX-setup) Bit Assignment

BIT NO.

NAME

DEFAULT

DESCRIPTION

Signal select 0

Signal selector monitored on LOGIC_OUT

DC-DC OCP detection,

Signal select 1

DC-DC voltage supervisor (OVP or UVP),

Signal select 2

Motor overcurrent (four H-bridges),

TSD, etc. [shutdown (protection) signals must be latched]

Signal select 3

Ignore SD 0

0 = Normal operation, 1 = Ignore DC-DC OCP

Ignore SD 1

0 = Normal operation, 1 = Ignore DC-DC voltage supervisor

Ignore SD 2

0 = Normal operation, 1 = Ignore motor OCP

Ignore SD 3

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

Disable nORT 0

fault condition

(selective shutdown for

Ch-C shutdown is released by nSLEEP rise edge. If fault condition is on the other

DC-DC Ch-C)

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

Disable nORT 1

1 = Disable nORT assertion but shut down DC-DC channel B, in case of DC-DC

(Selective shutdown for

Ch-B fault condition

DC-DC Ch-B)

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

Disable nORT 2

Ch-A, in case of DC-DC Ch-A fault condition.

(Selective shutdown for

Ch-A shutdown is released by nSLEEP rise edge. If fault condition on the other

DC-DC Ch-A)

channels (with bit is 0), assert nORT and shut down all three DC-DC channels .

Pre TSD 0

0 = Ttsd0 = Ttsd - 20°C, 1 = Ttsd1= Ttsd - 30°C

Pre TSD 1

0 = Pre-TSD (logic) output, 1 = TH_OUT Analog output

Test mux 0

Test mode selection, < 2,1,0 > = (0,0,0) Normal operation

Test mux 1

(0,0,1) TSD control – 1,

(0,1,0) TSD control – 2, (0,1,1) OSC monitor enable,

Test mux 2

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