7.5 MPBT DUT Test Board Design

The IS2083BM MPBT test includes the following items:

Table 7-1. IS2083BM MPBT Test Item Description
Design Under Test	Test Pin	Description
GPIO	P32, P16, P26, P05, P00, P27, P37, P03, P07, P06,P01,P02, P23, DP, DM	GPIO open/short test
PMU	1V2, LDO31_VO, BK2_O_1V8, VCC_RF, BK1_O_1V5, BAT_IN, ADAP_IN	Power measurement and calibration
RF Test	RTX (RF test point on matching path)	Use RF test probe fixed on PCB, contact the RF test point and ground during test. RF Antenna must be bypassed or shielded during test.
Audio	AOHPR, AOHPL, MIC_P, MIC_N, AIR,AIL	Analog Speaker Output, MIC Input and Aux Audio Input
Digital Audio Output	DR1, RFS1, SCLK1 and DT1	Digital Audio Output Interface
Digital Microphone Input	DMIC_CLK, DMIC_R, DMIC_L	Digital Audio Microphone Interface
LED	LED1 and LED2	LED1 (Blue) and LED2 (Red)
Mode Control	P3_4	Test Mode Control

The following figure illustrates the block diagram of DUT Test Board.

Figure 7-6. DUT Test Board Block Diagram

The following figure illustrates the IS2083BM MPBT Test Board circuit. The DUT socket connects all the test interface to include RF test point, PMU test points, audio input/output test points and the control interface.

Figure 7-7. IS2083BM DUT MPBT Test Board Circuit

The following figure illustrates MPBT Test Fixture that includes DUT test board PCB, socket, Victoria Board (AC102013) and I2S Adapter Board.

Figure 7-8. MPBT Test Fixture Connection Diagram

The following MPBT Test fixture includes DUT test board PCB, socket, Victoria Board (AC102013).

Note: During testing, the antenna shield copper paper is used to minimize the RF power leakage to antenna path.

The following figure shows the antenna shield copper area on DUT socket, which is used to minimize the RF power leakage to antenna during MPBT RF test. The RF test probe is placed on the DUT RF test point position.

Figure 7-10. DUT Socket RF Test Probe and Shielding