CLRC63201TSLASH0FE datasheet(37/163 Pages) PHILIPS

37 / 163 page

Philips Semiconductors

Product Specification Rev. 3.0; May 2003

Multiple Protocol Contactless Reader IC

CL RC632

Confidential

5.2.2.8

BitFraming Register

Adjustments for bit oriented frames.

Name: BitFraming

Address: 0x0F

Reset value: 00000000, 0x00

RxAlign

TxLastBits

Access

Rights

r/w

Description of the bits

Bit

Symbol

Function

Reserved for future use

6-4

RxAlign

Used for reception of bit oriented frames: RxAlign defines the bit position for the

first bit received to be stored in the FIFO. Further received bits are stored in the

following bit positions.

After reception, RxAlign is cleared automatically.

Example:

RxAlign = 0:

the LSB of the received bit is stored at bit 0,

second received bit is stored at bit position 1

RxAlign = 1:

the LSB of the received bit is stored at bit 1,

second received bit is stored at bit position 2

RxAlign = 7:

the LSB of the received bit is stored at bit 7,

second received bit is stored in the following byte

at bit position 0

reserved for future use

2-0

TxLastBits

Used for transmission of bit oriented frames: TxLastBits defines the number of

bits of the last byte that shall be transmitted. A 000 indicates that all bits of the last

byte shall be transmitted.

After transmission, TxLastBits is cleared automatically.

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