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Connector and Test Point Descriptions
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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-k
Ω pulldown to AGND
J10 GPIO Connected to pins GPIO1 - GPIO4 (M3, M4, N3, N4) with 1-M
Ω
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-
M
Ω 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 k
Ω
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 M
Ω
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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