參數(shù)資料
型號(hào): HT9580
廠商: Holtek Semiconductor Inc.
英文描述: Character Pager Controller
中文描述: 字符傳呼機(jī)控制器
文件頁數(shù): 29/63頁
文件大?。?/td> 444K
代理商: HT9580
SPI configure register
Address
Register
Name
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
State on
POR
0032H
SPI-CONFIG
S/M
LEN1
LEN0
REQST
SPIFG
CLK_EDG
SPI_EN
START
0111 1000
HT9580
29
April 28, 2000
Preliminary
S/M: Slave/master mode selection
When S/M is "0", HT9580 is in the master
mode. Otherwise, HT9580 is in the slave
mode.
0
1
S/M
Master mode
(SCK is output)
Slave mode
(SCK is input)
LEN0, LEN1: Data length
The LEN0 and LEN1 will determine the data
length between exchange.
LEN1
LEN0
Data Length (Bit)
0
0
4
0
1
8
1
0
16
1
1
32
REQST: SPI request (read only)
When FLEX
TM
decoder wants to exchange
data with HT9580, the REQST will have low
pulse.
SPIFG: SPI complete flag
0(clear):Datatransfertoexternaldevicehas
been completed.
1 (set): No valid completion of data transfer.
Thebitisclearedbyhardwareandset
by software.
CLK_EDG: Data sampling edge
The CLK_EDG will determine the valid
MISOandMOSIsamplingedgeofSCKclock.
0
1
CLK_EDG
Rising edge
Falling edge
SPI_EN: The SPI enable
0
1
SPI_EN
When the SPI cir-
cuit is disabled, the
POCSAG decoder
I/O pins will be en-
abled
The SPI cir-
cuit and SPI
I/O pins will
be enabled
START: The data exchange start or not
0
1
START
No data exchange
Data
exchange
start
When the bit is set by software, the SPI data
exchange will start. After the first bit data ex-
change is completed, the START bit will clear
to low again by hardware.
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