Motorola ColdFire MCF5281 - Manual (Page 534)

Chip Configuration Module (CCM)
27-6 Freescale Semiconductor
27.5.3.3 Chip Identification Register (CIR)
27.6 Functional Description
Six functions are defined within the chip configuration module:
1. Reset configuration
2. Chip mode selection
3. Boot device selection
4. Output pad strength configuration
4–3 BOOTPS Boot port size. Reflects the default selection for the boot port size if the boot device is
configured to be external.
00 Internal (32 bits) (This is the value used for this device.)
01 16 bits
10 8 bits
11 32 bits
The default function of the boot port size can be overridden during reset configuration.
2 BOOTSEL Boot select. Reflects the default selection for the boot device.
0 Boot from internal boot device (This is the value used for this device.)
1 Boot from external boot device
1 — Reserved, should be cleared.
0 MODE Chip configuration mode. Reflects the default chip configuration mode.
0 Single-chip mode (This is the value used for this device.)
1 Master mode
The default mode can be overridden during reset configuration. If the default is overridden,
the CCR[MODE0] reflects the mode configuration.
15 8 7 0
Field PIN PRN
Reset 0010_0000_0000_0000
R/W R
Address IPSBAR + 0x11_000a
Figure 27-4. Chip Identification Register (CIR)
Table 27-6. CIR Field Description
Bits Name Description
15–8 PIN Part identification number. Contains a unique identification number for the
device.
7–0 PRN Part revision number. This number is increased by one for each new
full-layer mask set of this part. The revision numbers are assigned in
chronological order.
Table 27-5. RCON Field Descriptions (continued)
Bits Name Description
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3