CLRC632 Datasheet, PDF (132/163 Pages) NXP Semiconductors – Multiple Protocol Contactless Reader IC

Philips Semiconductors
Multiple Protocol Contactless Reader IC
Product Specification Rev. 3.0; May 2003
CL RC632
18.6.2 READE2 COMMAND 03_HEX
18.6.2.1 Overview
Command _Codehex
Action
ReadE2
03
Reads data from E²PROM and puts it to the
FIFO buffer
Arguments
Start Address LSB
Start Address MSB
Number of Data Bytes
Returned Data
Data Bytes
The ReadE2-Command interprets the first two bytes found in the FIFO buffer as E²PROM starting
byte-address. The next byte specifies the number of data bytes that shall be returned.
When all three argument-bytes are available in the FIFO buffer, the specified number of data bytes is copied
from the E²PROM into the FIFO buffer, starting from the given E²PROM starting byte-address.
The ReadE2-Command can be triggered only by the µ-Processor. It stops automatically when all data has
been delivered.
18.6.2.2 Error Flags for the ReadE2 Command
Reading is inhibited for the E²PROM blocks 8_hex up to 1F_hex ( key memory area). 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 Diverse Commands
18.7.1 LOADCONFIG COMMAND 07_HEX
18.7.1.1 Overview
Command
LoadConfig
Code_hex
Action
07
Reads data from E²PROM and initialises the
registers
Arguments and Data
Start Address LSB
Start Address MSB
Returned Data
-
The LoadConfig-Command interprets the first two bytes found in the FIFO buffer as E²PROM starting
byte-address. When the two argument-bytes are available in the FIFO buffer, 32 bytes from the E²PROM are
copied into the CL RC632 control and configuration registers, starting at the given E²PROM starting
byte-address. The LoadConfig-Command can only be started by the µ-Processor. It stops automatically
when all relevant registers have been copied.
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