M53015 Evaluation Board, Rev. 0.5
12 Freescale Semiconductor
5.23 Jumpers, Headers, and Switches
Headers and jumpers on the M53015EVB allow for user control of the hardware configuration. The
following tables provide descriptions for each of these settings:
A21
SW3-2 Chip Select Configuration
ON FB_A[23:22] = FB_A[23:22]
OFF FB_A[23:22] = FB_CS[3:2]
A22
SW3-3 Reserved
ON Reserved
OFF Default
1
Bold indicates the default setting, SW4-3, SW4-4, and SW3-4 are not connected and their position does not affect
configuration.
Table 11. Header Settings
Reference Designator Setting
1,2
Function
H1
ON Connects a 4 ohm load across the SPKR_N and SPKR_P lines of the internal CODEC
OFF Disconnects the 4 ohm load across the SPKR_N and SPKR_P lines of the internal CODEC
H2
ON Connects the T0IN line to the LED D1
OFF Disconnects the T0IN line from the LED D1
H3
ON Connects the T1IN line to the LED D2
OFF Disconnects the T1IN line from the LED D2
H4
ON Connects the T2IN line to the LED D3
OFF Disconnects the T2IN line from the LED D3
H5
ON Connects the T3IN line to the LED D4
OFF Disconnects the T3IN line from the LED D4
H6
ON Grounds the ADC_N/MIC_N line of the internal CODEC to AVSS_SPKR_HP_HDST
OFF Disconnects the ADC_N/MIC_N line of the internal CODEC from AVSS_SPKR_HP_HDST
H7
ON
Connects the Left channel of the Speaker/Headphone Out jack (J18) to the speaker lines
(for speaker use)
OFF
Disconnects the Left channel of the Speaker/Headphone Out jack (J18) from the speaker
lines (for Headphone Out use)
H8
1-2 Adds a 1.0uF capacitor in series with the ADC_N/MIC_N line of the internal CODEC
3-4 Adds a 0.1uF capacitor in series with the ADC_N/MIC_N line of the internal CODEC
5-6 Removes in series capacitance from the ADC_N/MIC_N line of the internal CODEC
Table 10. SW3, SW4, and SW5 Settings (continued)
Pins Affected Switch Settings
1
Function
