ML7344C datasheet(33/154 Pages) LAPIS

33 / 154 page

FEDL7344C/E/J-05

ML7344C/E/J

33/154

Extended Link Layer Format

If “CI-field” (1st byte of 2nd Block)=0x8C or 0x8D, Extended Link Layer is applied. The packet format is as

follows:

(1) CI-field = 0x8C

For TX, if 2 bytes extention format is used, set EXT_PKT_MODE[1:0] ([PKT_CTRL1: B0 0x04(7-6)])=0b01.

For RX, if RX_EXTPKT_OFF([PKT_CTRL1: B0 0x04(3)])=0b0, ML7344 recognizes “CI-field” and RX

operation is processed.

*1: 1st Block is identical to normal Format A.

*2: Indicates TX FIFO data storage area size.

*3: Indicates RX FIFO data storage area size.

*4: When RXDIO_CTRL[1:0] ([DIO_SET: B0 0x0C(7-6)])=0b10, indicates DCLK/DIO output area.

Length

MSB

LSB

Preamble

Sync

Word

TX: automatic insertion

RX: automatic detection, deletion

Manchester/3-out-of-6 applicable [B0 0x07(3-2,1-0)]

1st Block

(*1)

2nd Block

Optional Block

Postamble

field

byte

C to CRC

field

bytes

field

byte

ACC

field

byte

field

byte

CRC

field

bytes

CRC

field

bytes

Data

field

Max.12

bytes

Data

field

Max.16

bytes

0/2-8

bits

10/18/

32bits

> n*2(*1)

bits

CRC applicable

(*2)

(*3)

(*4)

[B0 0x07]

[B0 0x42]

[B0 0x43]

[B0 0x08]

[B1 0x25-2E]

[B0 0x05]

[B0 0x7A/7B, 7D/7E]

[B0 0x44]

field

byte

Extended

Block

ML7344C Datasheet(PDF) 33 Page - LAPIS Semiconductor Co., Ltd.

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