MMCCMB2107 Freescale, MMCCMB2107 Datasheet - Page 101

• Manufacturer Part Number: MMCCMB2107
• Manufacturer: Freescale

Specifications of MMCCMB2107

• Lead Free Status / RoHS Status: Not Compliant

3.8.1 Reset Configuration
MMC2107 – Rev. 2.0
MOTOROLA
During reset, the pins for the reset override functions are immediately
configured to known states, even if the clock source is not present.
Table 3-6
If the RCON pin is not asserted during reset, the chip configuration and
the reset configuration pin functions after reset are determined by RCON
or fixed defaults, regardless of the states of the external data pins. The
internal configuration signals are driven to levels specified by the RCON
register’s reset state for default module configuration.
If the external RCON pin is asserted during reset, then various chip
functions, including the reset configuration pin functions after reset, are
configured according to the levels driven onto the external data pins.
(See
the levels on the external configuration pins to allow for module
configuration.
D[28, 26, 23:21, 19:16],
PA[4, 2], PB[7:5, 3:0]
RCON
V
1. If the external RCON pin is not asserted during reset, pin functions are determined by the
2. During reset, the external RCON pin assumes its RCON pin function, but this pin changes
DDSYN
Freescale Semiconductor, Inc.
default operation mode defined in the RCON register. If the external RCON pin is asserted,
pin functions are determined by the chip operation mode defined by the override values
driven on the external data bus pins.
to the function defined by the chip operation mode immediately after reset. See
For More Information On This Product,
Table
Table 3-6. Reset Configuration Pin States During Reset
Chip Configuration Module (CCM)
Pin
shows the states of the external pins while in reset.
3-7.) The internal configuration signals are driven to reflect
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Digital I/O or primary
function
RCON function for all
modes
Not affected
Function
(2)
Pin
(1)
Chip Configuration Module (CCM)
Input
Input
Input
I/O
Output
State
—
—
—
Functional Description
Must be driven
by external logic
Internal weak
pullup device
Must be driven by
external logic
Technical Data
Input
State
Table
3-7.
101