CLRC632 Datasheet, PDF (133/163 Pages) NXP Semiconductors – Multiple Protocol Contactless Reader IC

Philips Semiconductors
Multiple Protocol Contactless Reader IC
Product Specification Rev. 3.0; May 2003
CL RC632
18.7.1.2 Register Assignment
The 32 bytes of E²PROM content, beginning with the E²PROM starting byte-address, is written to the CL
RC632 register 10_hex up to register 2F_hex (for the E²PROM memory organisation see also 6).
Note: The procedure for the register assignment is the same as it is for the Start Up Initialisation (see 11.3).
The difference is, that the E²PROM starting byte-address for the Start Up Initialisation is fixed to 10_hex (Block
1, Byte 0). With the LoadConfig-Command it can be chosen.
18.7.1.3 Relevant Error Flags for the LoadConfig-Command
Valid E²PROM starting byte-addresses are in the range from 10_hex up to 60_hex.
Copying from block 8_hex up to 1F_hex (keys) is inhibited. Reading from these addresses sets the flag AccessErr
to 1. Addresses above 1FF_hex are taken modulo 200_hex (for the E²PROM memory organisation refer to
chapter 6).
18.7.2 CALCCRC COMMAND 12_HEX
18.7.2.1 Overview
Command
CalcCRC
Code_hex
Action
12
Activates the CRC-Coprocessor
Arguments and Data
Data Byte-Stream
Returned Data
-
The CalcCRC-Command takes all data from the FIFO buffer as input bytes for the CRC-Coprocessor. All
data stored in the FIFO buffer before the command is started will be processed. This command does not
return any data via the FIFO buffer, but the content of the CRC-register can be read back via the
CRCResultLSB-register and the CRCResultMSB-register. The CalcCRC-Command can only be started by
the µ-Processor. It does not stop automatically but has to be stopped explicitly by the µ-Processor with the
Idle-Command. If the FIFO buffer is empty, the CalcCRC-Command waits for further input from the FIFO
buffer.
133
Confidential