MCIMX27ADSE Freescale Semiconductor, MCIMX27ADSE Datasheet - Page 17

• Manufacturer Part Number: MCIMX27ADSE
• Description: KIT APPLICATION DEV ADS I.MX27
• Manufacturer: Freescale Semiconductor
• Series: i.MXr
• Type: Microcontrollerr

Specifications of MCIMX27ADSE

• Contents: Main Board, LCD Panel, Keypad, NAND Flash Card, Image Sensor and TV Encoder Card
• Silicon Manufacturer: Freescale
• Core Architecture: ARM
• Core Sub-architecture: ARM9
• Silicon Core Number: I.MX2
• Silicon Family Name: I.MX27
• Supported Devices: I.MX27
• Rohs Compliant: Yes
• For Use With/related Products: i.MX27
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.2.5
Table 2-7 shows S15 switch functions. The settings of the four SPST slide switches in S15 may be read by
software to implement user-defined functions. The switch settings are read on data bits D[3:0].
2.2.6
Table 2-8 shows S16 switch functions. It controls the power up status of the UART’s transceiver and the
UARTA transceiver baud rate.
2.2.7
In ADS, many circuits are supplied by the battery emulation circuit. This variable resistor (R425) is used
to adjust the output voltage of the battery emulation circuit. It turns to around 4V in the default factory
setting. This voltage can measure by a voltmeter in the test point TL79.
2.2.8
Table 2-9 explains the ADS jumpers.
Freescale Semiconductor
.
.
Enable EEPROM for external
ethernet controller, J71
SD/MMC2 enable jumpers, J72-J77
DIP Switch S15 - User Defined Switches
DIP Switch S16 - UART Enable Switches
Variable resistor R425 - Battery emulation output control
ADS Jumper Headers
S16-1, UARTA_EN
S16-2, UARTA_SHDN
S16-3, UARTA_MBAUD
S16-4, UARTB_EN
Jumper Designation
S15-[4:1]
Switch Designation
Switch Designation
Table 2-8. S16 UART Enable Switches function
MCIMX27ADSE User’s Manual, Rev. A
Table 2-9. ADS Jumper Headers
Table 2-7. S15 Switch Settings
Connection
Setting
OFF
OFF
OFF
OFF
Pin
ON
ON
ON
ON
1-2
2-3
1-2
Setting
OFF
ON
UARTA transceiver is disabled.
UARTA baud rate limits to 1Mbps.
UARTA transceiver is enabled; default factory
setting.
UARTA transceiver is in shutdown mode.
UARTA transceiver is in wake up mode; default
factory setting.
UARTA baud rate limits to 250Kbps; default
factory setting.
UARTB transceiver is enabled; default factory
setting.
UARTB transceiver is disabled.
Enable the EEPROM (U45) for the External
Ethernet; default factory setting.
Disable the EEPROM (U45) for the External
Ethernet.
Enable the SD/MMC2.
D[3:0] reads zero.
D[3:0] reads one.
Effect
Effect
Effect
Configuration and Operation
2-3