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UCD9244RGCR Datasheet(PDF) 9 Page - Texas Instruments

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Part # UCD9244RGCR
Description  Digital PWM System Controller with 4-bit, 6-bit, or 8-bit VID Support
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

UCD9244RGCR Datasheet(HTML) 9 Page - Texas Instruments

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UCD9244
www.ti.com
SLVSAL6A
– NOVEMBER 2010 – REVISED FEBRUARY 2011
Table 1. PIN FUNCTIONS
PIN
PIN LABEL
PIN DESCRIPTION
NUMBER
1
CS4A
Power stage 4A current sense input and input to analog comparator 4
2
CS3A
Power stage 3A current sense input and input to analog comparator 3
3
CS2A
Power stage 2A current sense input and input to analog comparator 2
4
VinMon
Input Voltage monitor
5
Temp1/AuxADC1
Temperature sense input for Rail 1, or Auxiliary ADC input 1
6
Temp2/AuxADC2
Temperature sense input for Rail 2, or Auxiliary ADC input 2
7
V33DIO1
Digital Input / Output 3.3V supply
8
Dgnd1
Digital ground
9
nRESET
Active low device reset input. Pull up to 3.3V with a 10k ohm resistor
10
JTAG_RCK
JTAG Return Clock
11
FLT1A
Fault indicator for stage 1A
12
VID1S
VID Select pin for Rail 1
13
FLT2A
Fault indicator for stage 2A
14
VID2S
VID Select pin for Rail 2
15
PMBus_Clk
PMBus Clock. Pull up to 3.3V with a 2k ohm resistor
16
PMBus_Data
PMBus Data. Pull up to 3.3V with a 2k ohm resistor
17
DPWM1A
Digital Pulse Width Modulator output 1A
18
VID1C
VID input pin for Rail 1 - most significant bit
19
DPWM2A
Digital Pulse Width Modulator output 2A
20
VID2A
VID input pin for Rail 2 - least significant bit
21
DPWM3A
Digital Pulse Width Modulator output 3A
22
VID2B
VID input pin for Rail 2
23
DPWM4A
Digital Pulse Width Modulator output 4A
24
Power_Good
Power Good Indication
25
FLT3A
Fault indicator for stage 3A
26
Dgnd2
Digital Ground
27
PMBus_Alert
PMBus Alert. Pull up to 3.3V with a 2k ohm resistor
28
PMBus_Cntrl
PMBus Control. Pull up to 3.3V with a 2k ohm resistor
29
VID2C
VID input pin for Rail 2 - most significant bit
30
VID3A
VID input pin for Rail 3 - least significant bit
31
VID3B
VID input pin for Rail 3
32
VID3C
VID input pin for Rail 3 - most significant bit
33
VID3S
VID Select pin for Rail 3
34
FLT4A
Fault indicator for stage 4A
35
VID4S
VID Select pin for Rail 4
36
VID4A/JTAG_TCK
Mux
'ed pin - VID input pin for Rail 4 (LSB), JTAG Test Clock
37
VID4B/JTAG_TDO
Mux
'ed pin - VID input pin for Rail 4, JTAG Test Data Output
38
SyncIn/JTAG_TDI
Mux
'ed pin - SyncIn, JTAG Test Data In. Tie to V33D with 10kohm resistor
39
VID4C/JTAG_TMS
Mux
'ed pin - VID input for rail 4 (MSB); JTAG Test mode select. Tie to V33D with a 10kohm resistor
40
JTAG_nTRST
JTAG Test Reset - Tie to ground with a 10kohm resistor
41
VID1A
VID input pin for Rail 1 - least significant bit
42
VID1B
VID input pin for Rail 1
43
Dgnd3
Digital Ground
44
V33DIO2
Digital Input / Output 3.3V supply
45
V33D
Digital core 3.3V supply
46
V33A
Analog 3.3V supply
47
BPCap
1.8V Bypass Capacitor -- tie 0.1
µF cap to analog ground
© 2010–2011, Texas Instruments Incorporated
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