MA28139 PDF资料下载(16/34 页)OBDH Bus Terminal

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参数资料

型号：	MA28139
厂商：	Dynex Semiconductor Ltd.
英文描述：	OBDH Bus Terminal
中文描述：	OBDH客运站
文件页数：	16/34页
文件大小：	416K
代理商：	MA28139

MA28139

16/34

Figure 14: 8-Bit Digital Serial and 8-Bit Digital Bi-Level Acquisition Waveforms

Note 1: For any acquisition command to be decoded, the evaluated Memory Load Address must be zero. An evaluated Memory Load

Address of non-zero does not imply data acquisition.

Note 2: The Memory Load Address which is evaluated for decoding and addressing usage may vary from 3 to 5 bits.

If (EXTMLA1 = 1) and (EXTMLA2 = 0), the Memory Load Address field is extended to 4 bits and bit 11 of the Interrogation will be

treated as MLA(1).

If (EXTMLA2 = 1), the Memory Load Address field is extended to 5 bits and bits 10 and 11of the Interrogation will be

treated as MLA(0:1).

Any Interrogation bits treated as Extended Memory Load Address bits will not be treated as Terminal Address bits; this facility is

intended for 2x or 4x size expansion provided that up to 4 consecutive Terminal Addresses can be used.

Note 3: The 8-bit Digital Serial and 8-bit Digital Bi-Level Acquisition command responses are always 13 bits in length; the Destination

Address is simply copied from the Interrogation into the Response.

Bit Position

RIRSYNC

RIRCLK

RIRDATA

RIRVAL

IRCLK

TRCLK

CTCLK

CHADD(0:7)

MODS8 or

MODBL

DIGIN

DATARRT

ENRRT