參數(shù)資料
型號： SAA7140B
廠商： NXP SEMICONDUCTORS
元件分類： 消費家電
英文描述： High Performance Scaler HPS
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP128
文件頁數(shù)： 42/68頁
文件大小： 432K
代理商： SAA7140B
1996 Sep 04
42
Philips Semiconductors
Objective specification
High Performance Scaler (HPS)
SAA7140A; SAA7140B
8
I
2
C-BUS PROTOCOL
8.1
I
2
C-bus format
Table 10
I
2
C-bus format
Table 11
Description of I
2
C-bus format
Table 12
I
2
C-bus status byte (X in address byte = 1; 71H at IICSA = LOW or 73H at IICSA = HIGH)
Table 13
Function of status bits ID3 to ID0 (software model of SAA7140A and SAA7140B compatible)
Remark:
With the exception of subaddress 20H (read only) all I
2
C-bus registers are read/write registers.
S
SLAVE ADDRESS
ACK
SUBADDRESS
ACK
DATA0
ACK
X
DATAn
ACK
P
CODE
DESCRIPTION
S
Slave address
ACK
Subaddress
START condition
0111 00X = IICSA = LOW or 0111 001X = IICSA = HIGH
acknowledge generated by the slave
subaddress byte (if more than 1 data byte is transmitted then an auto-increment of the subaddress
is performed)
data byte
STOP condition
read/write control bit:
X = 0, order to write (the circuit is slave receiver)
X = 1, order to read (the circuit is slave transmitter)
Data
P
X
FUNCTION
DATA BITS
D7
D6
D5
D4
D3
D2
D1
D0
Status byte (subaddress 20H)
ID3
ID2
ID1
ID0
X
X
X
X
ID3
ID2
ID1
ID0
VERSION
0
0
0
0
V0 (first version)
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