參數(shù)資料
型號(hào): CLRC632
廠商: NXP Semiconductors N.V.
英文描述: Multiple Protocol Contactless Reader IC
中文描述: 多協(xié)議非接觸式讀卡器IC
文件頁數(shù): 13/163頁
文件大?。?/td> 948K
代理商: CLRC632
Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
CL RC632
13
Confidential
4
DIGITAL INTERFACE
4.1
Overview of Supported μ-Processor Interfaces
The CL RC632 supports direct interfacing of various μ-Processors. Alternatively the Enhanced Parallel Port
(EPP) of personal computers can be connected directly. The following table shows the parallel interface
signals supported by the CL RC632:
Bus Control Signals
Bus
Separated Address and Data Bus
Multiplexed Address and Data Bus
control
NRD, NWR, NCS
NRD, NWR, NCS, ALE
address
A0, A1, A2
AD0, AD1, AD2, AD3, AD4, AD5
Separated Read and Write
Strobes
data
D0 … D7
AD0 … AD7
control
R/NW, NDS, NCS
R/NW, NDS, NCS, AS
address
A0, A1, A2
AD0, AD1, AD2, AD3, AD4, AD5
Common Read and Write
Strobe
data
D0 … D7
AD0 … AD7
control
nWrite, nDStrb, nAStrb, nWait
address
AD0, AD1, AD2, AD3, AD4, AD5
Common Read and Write
Strobe with Handshake
(EPP)
data
-
AD0 … AD7
Table 4-1: Supported μ-Processor Interface Signals
4.2
Automatic μ-Processor Interface Type Detection
After every Power-On or Hard Reset, the CL RC632 also resets its parallel μ-Processor interface mode and
checks the current μ-Processor interface type.
The CL RC632 identifies the μ-Processor interface by means of the logic levels on the control pins after the
Reset Phase. This is done by a combination of fixed pin connections (see below) and a dedicated
initialisation routine (see 11.4).
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