SMC Networks ARM PL241 - Manual (Page 79)

Programmer’s Model
ARM DDI 0389B Copyright © 2006 ARM Limited. All rights reserved. 3-19
3.3.12 SMC User Configuration Register at 0x1204
The smc_user_config Register is a general purpose write-only register. This register sets
the value of the smc_user_config[7:0] primary outputs. The smc_user_config Register
can be written in all states. Figure 3-17 shows the register bit assignments.
Figure 3-17 smc_user_config Register bit assignments
Table 3-13 lists the register bit assignments.
3.3.13 SMC Peripheral Identification Registers <0-3> at 0x1FE0-0x1FEC
The smc_periph_id Registers are four 8-bit read-only registers, that span address
locations
0xFE0-0xFEC . The registers can conceptually be treated as a single register that
holds a 32-bit peripheral ID value. They are read by an external master to determine
what version of the device the SMC is. None of the registers 0-3 can be read in the Reset
state.
Table 3-14 lists the register bit assignments.
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Table 3-13 smc_user_config Register bit assignments
Bits Name Function
[31:8] - Reserved, undefined. Write as zero.
[7:0] smc_user_config This value sets the state of the smc_user_config[7:0] primary output pins.
Table 3-14 smc_periph_id Register bit assignments
Bits Name Description
[31:25] - Reserved, read undefined.
[24] integration_cfg Configuration options are peripheral-specific.
See SMC Peripheral Identification Register 3 on page 3-21.
[23:20] - The peripheral revision number is revision-dependent.
[19:12] designer Designer’s ID number. This is 0x41 for ARM.
[11:0] part_number Identifies the peripheral. The part number for the SMC is 0x352 .