Datasheet

www.ti.com
TPS2384
SLUS634D – NOVEMBER 2004 – REVISED MARCH 2007
Table 4. Common Write, Register Select = 1111 (Test Register)
(1)
BIT FUNCTION STATE PRESET
STATE
D7 Unused 0 0
0 = normal operation
D6 Thermal shutdown test 0
1 = force TSD condition (all ports off)
0 = normal POR timing
D5 POR disable 0
1 = force POR to a non-reset state
0 = normal (4-ms Discovery 1 and Discovery 2)
D4 Discovery timers 0
1 = timers disable
0 = normal operation
D3 Discovery 1 and 2 0
1 = all 4-port Discovery 1 and Discovery 2 – halt
0 = DC Disconnect timer between 300 ms to 400 ms for loads less than 5 mA (IEEE
D2 DC Disconnect timer standard) 0
1 = DC Disconnect timer 0 ms for loads less than 5 mA
0 = normal operation
D1 TED timer 0
1 = 750-ms TED timer disable
D0 Unused 0 0
(1) Test mode select; not intended for end--application use.
Table 5. Common Control Write, Register Select = 0001
BIT FUNCTION STATE PRESET
STATE
D7 Unused 0 0
D6 Unused 0 0
0 = active
D5 Thermal shutdown fault
(1)
0
1 = disable
0 = off
D4 A high 0
1 = AC_HI driver on
0 = off
D3 AC low 0
1 = AC_LO driver on
0 = active
D2 Port over/under voltage faults 0
1 = disable
0 = normal operation
D1 All ports disable
(2)
0
1 = all ports shut down (no ramp)
0 = normal operation
D0 Software RESET 0
1 = reset all circuits and start a POR timing cycle
(1) Register 0001, bit D5 operation inhibited after device probe.
(2) Consult factory for Alternative B, semi-auto mode implementations which write to bit D1.
32
Submit Documentation Feedback