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Connector and Test Point Descriptions www.ti.com
4 Connector and Test Point Descriptions
4.1 Headers and Switches
The following table contains header and switch descriptions.
Table 1. Headers and Switches
Header/Switch Title Description
J1 CHG_DET Charger Detection Input, connected to CHG_DET (pin D11)
and NC (pins C12,13,D11-13)
J2 PWRGND Power ground, connected to ground plane
J3 TJ1 Test jumper, connected to VIN pins E13 and F11- 13
J4 PWRGND Power ground, connected to ground plane
J5 VIN Power supply input; connect BAT or ac adapter here to J5;
connected to pins A11 - A13, B11 - B13, and C11
J6 PWRGND Power ground, connected to ground plane
J7 TJ2 Test jumper, connected to VIN pins G10-13
J8 PWRGND Power ground, connected to ground plane
J9 ADC_IN Pins COMP (pin N1, input comparator for autoboot feature) and
ALNG1 - ALNG3 (pins L3, M1, M2) - inputs to analog-to-digital
converter. 20-kΩ pulldown to AGND
J10 GPIO Connected to pins GPIO1 - GPIO4 (M3, M4, N3, N4) with 1-MΩ
pulldown to AGND
J11 USB-I2C ADAPTER Connection for USB-TO-GPIO TI tool which connects HPA752
board to PC for GUI. Connected to pins GPIO1 - GPIO4 with 1-
MΩ pulldown to AGND, SAA_3V, SAA_GND, enable for I2C
port expander U2, SCLK ,and SDAT
J12 ADAPTER 3V Header to sense/supply voltage to I2C bus
J13 SUPERCAP/COINCELL Header to connect external real-time clock (RTC) supply
J14 32KHZOUT Header to probe pin OUT32K (C7, pin 1 of J14 is OUT32k and
pin 2 of J14 is analog ground)
J15 AGND Header with four connections to analog ground to facilitate
oscilloscope ground probe connection
J16 PWM Header to pin K9; this pin is a no-connect inside the IC (NC6)
J17 DIG_PWM Header to PWM, digital push-pull output; pin DIG_PWM (N11)
on the IC
J18 DIG_PWM2 Header to PWM, digital push-pull output; pin DIG_PWM2 (F4)
on the IC
J19 SM2 Output of dc/dc converter SM2
J20 PGND2 Power ground 2 for dc/dc converter SM2
J21 SM1 Output of dc/dc converter SM1
J22 PGND1 Power ground 1 for dc/dc converter SM1
J23 SM0 Output of dc/dc converter SM0
J24 PGND0 Power ground 1 for dc/dc converter SM0
J25 DGND2DT_EXTPWR For IT internal use only
J26 SPARE_OUT No internal connection
J27 NINT Header for nINT pin; interruption pin nINT is LO when interrupt
is requested by TPS65864x. Open-drain output
J28 NNORTC Header for nNORTC pin (D4); output status pin of RTC_OUT
LDO
J29 TNOPWR Header to monitor NOPOWER pulse width set pin TNOPWR
(A3)
J30 NHOT_RST Header for nHOT_RST pin (A2); reboot cycle request;
hardware reboot cycle control, pulled up to JP26 (SM2 or 2V2)
through 100 kΩ
J31 NNOPWR Header for pin nNOPOWER (M11)
J32 RESUME Header for pin RESUME (B2), connected to switch S3, and
pulled down to DGND through 1 MΩ
J33 SCLK/SDAT Header for pins SCLK (H4) pin 1 of header and SDAT (J2) pin
2 of header, for monitoring I2C bus
8
TPS658643 System Evaluation Board SLVU582A–December 2011–Revised May 2012
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