CXD2085M Просмотр технического описания (PDF) - Sony Semiconductor

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CXD2085M

ID-1 Detection

Sony Semiconductor 

CXD2085M

5-2. No bus mode

No bus mode is established when setting the MCON pin (Pin 3) to Low and then the CXD2085M can be

operates without using the I2C bus.

In this case, the contents to be set by the I2C bus is fixed as shown below. OLBX and O169 obtain the

decoding results as they become the direct output pins.

Table 3. Settings in No Bus Mode (Pin 3, MCON = Low)

R/W

Bit

Symbol

Contents

bit7 MSB POLBX

bit6

PO169

Fixed to Low. In no I2C bus mode, there is no general-purpose I/O port

function and this bit's operation is not affected.

bit5

bit4

WR

bit3

PORT2

PORT1

TST

PORT1 and PROT2 fixed to Low. The OLBX and O169 pins are the

direct output pins of the ID decoding result.

SCL (Pin 9) input reflected as it is. Therefore, connect the SCL pin to

Vss in no I2C bus mode.

bit2

XJGLK

bit1

LNJ1

bit0 LSB RES

SCL (Pin 9) input reflected as it is. Fixed to Low as the SCL pin is surely

connected to Vss.

Fixed to Low. When resetting is required, use the XRST pin (Pin 1).

–8–

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