Datasheet

UCD3138
SLUSAP2F –MARCH 2012 –REVISED NOVEMBER 2013 www.ti.com
2.9 Pin Functions (UCD3138RHA and UCD3138RMH)
Additional pin functionality is specified in the following table.
Table 2-2. Pin Functions
ALTERNATE ASSIGNMENT
CONFIGURABLE
PIN NAME PRIMARY ASSIGNMENT
AS A GPIO?
NO. 1 NO. 2 NO. 3
1 AGND Analog ground
2 AD13 12-bit ADC, Ch 13, Connected to comparator E, I-share
3 AD06 12-bit ADC, Ch 6, Connected to comparator F
4 AD04 12-bit ADC, Ch 4, Connected to comparator D
5 AD03 12-bit ADC, Ch 3, Connected to comparator B & C
6 DGND Digital ground
7 RESET Device Reset Input, active low
8 ADC_EXT_TRIG ADC conversion external trigger input TCAP SYNC PWM0 Yes
9 PMBUS_CLK PMBUS Clock (Open Drain) SCI_TX0 Yes
10 PMBUS_DATA PMBus data (Open Drain) SCI_RX0 Yes
11 DPWM0A DPWM 0A output Yes
12 DPWM0B DPWM 0B output Yes
13 DPWM1A DPWM 1A output Yes
14 DPWM1B DPWM 1B output Yes
15 DPWM2A DPWM 2A output Yes
16 DPWM2B DPWM 2B output Yes
17 DWPM3A DPWM 3A output Yes
18 DPWM3B DPWM 3B output Yes
19 PMBUS_ALERT PMBus Alert (Open Drain) Yes
20 PMBUS_CTRL PMBus Control (Open Drain) Yes
21 TCK JTAG TCK (For manufacturer test only) TCAP SYNC PWM0 Yes
22 TDO JTAG TDO (For manufacturer test only) SCI_TX0 PMBUS_ALERT FAULT0 Yes
23 TDI JTAG TDI (For manufacturer test only) SCI_RX0 PMBUS_CTRL FAULT1 Yes
24 TMS JTAG TMS (For manufacturer test only) Yes
25 FAULT2 External fault input 2 Yes
26 DGND Digital ground
27 V33D Digital 3.3V core supply
28 BP18 1.8V Bypass
29 AGND Substrate analog ground
30 AGND Analog ground
31 EAP0 Channel #0, differential analog voltage, positive input
32 EAN0 Channel #0, differential analog voltage, negative input
33 EAP1 Channel #1, differential analog voltage, positive input
34 EAN1 Channel #1, differential analog voltage, negative input
35 EAP2 Channel #2, differential analog voltage, positive input
(Recommended for peak currrent mode control)
36 AGND Analog ground
37 V33A Analog 3.3V supply
38 AD00 12-bit ADC, Ch 0, Connected to current source
39 AD01 12-bit ADC, Ch 1, Connected to current source
40 AD02 12-bit ADC, Ch 2, Connected to comparator A, I-share
Corner Corner All four anchors should be soldered and tied to GND
NA anchor pin
(RMH only)
14 Overview Copyright © 2012–2013, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Links: UCD3138