TMP92FD54AI datasheet(41/84 Pages) TOSHIBA

41 / 84 page

2006-01-27

92FD54AI-41

TMP92FD54AI

device returns the ACK response data for a Communications error (bit 3) 18H

and waits for the next operation command (third byte). The four high-order

bits of the returned ACK response data are the four high-order bits of the

immediately preceding operation command data, so the value of these bits is

always 1.

Next, the device checks the checksum data in the m + 1’th byte. This check is

made to see whether the low-order 8-bit value obtained by adding eight bits of

the transmission data to 27 to m + 1 bytes not including the sign (ignoring

overflow) is 00H. If the value is not 00H, the device returns the ACK response

data for a CHECKSUM error (bit 0) 11H and waits for the next operation

command (third byte). If all data is found to be normal as a result of the above

check, the device returns the ACK response data for normal reception, 10H.

15. If the ACK response data in the (m + 2)th byte is a normal ACK response, the

device sends the normal ACK response data 10H and then branches to the

address specified by the data received as bytes 19 to 22.

TMP92FD54AI 数据表(PDF) 41 Page - Toshiba Semiconductor