MCIMX515CJM6C Freescale, MCIMX515CJM6C Datasheet - Page 14

• Manufacturer Part Number: MCIMX515CJM6C
• Manufacturer: Freescale

Specifications of MCIMX515CJM6C

• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

IOMUX Configuration for Boot Media
3
The information provided in this section describes the contacts assigned for each type of bootable media.
It also includes data about the clocks used during boot flow and their frequencies. Signals that can be
multiplexed appear in tables throughout this section. See the IOMUXC chapter in the i.MX51 Multimedia
Applications Processor Reference Manual (MCIMX51RM) for details about how to program the IOMUX
controller.
14
VREG
XTAL/EXTAL
Signal Name
IOMUX Configuration for Boot Media
JTAG_TCK
JTAG_TMS
JTAG_TDI
JTAG_TDO
JTAG_TRSTB
JTAG_DE_B
JTAG_MOD
i.MX51 Applications Processors for Consumer and Industrial Products, Rev. 4
JTAG
This regulator is no longer used and should be floated by the user.
The user should tie a fundamental-mode crystal across XTAL and EXTAL. The crystal must be
rated for a maximum drive level of 100
80 Ω or less is recommended. Freescale BSP (Board Support Package) software requires 24 MHz
on EXTAL.
The crystal can be eliminated if an external 24 MHz oscillator is available. In this case, EXTAL must
be directly driven by the external oscillator and XTAL is floated. The EXTAL signal level must swing
from NVCC_OSC to GND. If the clock is used for USB, then there are strict jitter requirements:
< 50 ps peak-to-peak below 1.2 MHz and < 100 ps peak-to-peak above 1.2 MHz for the USB PHY.
The COSC_EN bit in the CCM (Clock Control Module) must be cleared to put the on-chip oscillator
circuit in bypass mode which allows EXTAL to be externally driven. COSC_EN is bit 12 in the CCR
register of the CCM.
Table 3. Special Signal Considerations (continued)
Table 4. JTAG Controller Interface Summary
Input/open-drain output
3-state output
I/O Type
Input
Input
Input
Input
Input
μ
W or higher. An ESR (equivalent series resistance) of
Remarks
On-chip Termination
100 kΩ pull-down
100 kΩ pull-down
47 kΩ pull-up
47 kΩ pull-up
47 kΩ pull-up
47 kΩ pull-up
Keeper
Freescale Semiconductor