參數(shù)資料
型號(hào): CY7C67200
廠商: Cypress Semiconductor Corp.
英文描述: EZ-OTG Programmable USB On-The-Go Host/Peripheral Controller(EZ-OTG可編程USB On-The-Go主機(jī)/外圍設(shè)備控制器)
中文描述: 的EZ - OTG公司可編程的USB On - The - Go的主機(jī)/外設(shè)控制器(的EZ - OTG公司可編程的USB On - The - Go的主機(jī)/外圍設(shè)備控制器)
文件頁(yè)數(shù): 57/82頁(yè)
文件大?。?/td> 1719K
代理商: CY7C67200
CY7C67200
Document #: 38-08014 Rev. *F
Page 57 of 82
Scale Select
(Bits [12:9])
The Scale Select field provides control over the SCK frequency, based on 48 MHz. See
Table 8-9
for a definition of this field. This
field only applies to master mode.
Master Active Enable
(Bit 7)
The Master Active Enable bit is a read only bit that indicates if the master state machine is active or idle. This field only applies
to master mode.
1:
Master state machine is active
0:
Master state machine is idle
Master Enable
(Bit 6)
The Master Enable bit sets the SPI interface to master or slave. This bit is only writable when the Master Active Enable bit reads
‘0’, otherwise value will not change.
1:
Master SPI interface
0:
Slave SPI interface
SS Enable
(Bit 5)
The SS Enable bit enables or disables the master SS output.
1:
Enable master SS output
0:
Disable master SS output (three-state master SS output, for single SS line in slave mode)
SS Delay Select
(Bits [4:0])
When the SS Delay Select field is set to ‘00000’ this indicates manual mode. In manual mode SS is controlled by the SS Manual
bit of the SPI Control register. When the SS Delay Select field is set between ‘00001’ to ‘11111’, this value indicates the count in
half bit times of auto transfer delay for: SS LOW to SCK active, SCK inactive to SS HIGH, SS HIGH time. This field only applies
to master mode.
Table 8-9. Scale Select Field Definition for SCK Frequency
Scale Select [12:9]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
SCK Frequency
12 MHz
8 MHz
6 MHz
4 MHz
3 MHz
2 MHz
1.5 MHz
1 MHz
750 KHz
500 KHz
375 KHz
250 KHz
375 KHz
250 KHz
375 KHz
250 KHz
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