參數(shù)資料
型號： PEF24902
英文描述： ISDN Line Interface
中文描述： ISDN線路接口
文件頁數(shù)： 46/73頁
文件大小： 1618K
代理商： PEF24902
PEB 2466
PEF 2466
Interface Description
Hardware Reference Manual
37
2001-02-20
.
Figure 22
Example for a One-Byte Read Access
For byte-by-byte transfer, the high time of DCLK can be prolonged, resulting in a
user-defined
‘
waiting time
’
between bytes. This mechanism can be used for writing to
and reading from the device.
Figure 23
Example for a Read Access with Byte-by-Byte Transfer
Read and write commands can be chained by leaving CS# low after the completion of
each command sequence.
For read or write access to individual registers, the command sequence may be
terminated by rising CS# after the transmission of any number of bytes.
7 6 5 4 3 2 1 0
DIN
DOUT
DCLK
CS#
Read Command
Data Byte 1
High 'Z'
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
High 'Z'
Identification 81
H
2466_223
7 6 5 4 3 2 1 0
DIN
DOUT
DCLK
CS#
Read Command
Data Byte 1
High 'Z'
High 'Z'
7 6 5 4 3 2 1
0
7 6 5 4 3 2 1 0
Identification 81
H
2466_224
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