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參數資料
型號: MC145574
廠商: Motorola, Inc.
英文描述: ISDN S/T-Interface Transceiver
中文描述: 綜合業務數字網S / T的接口收發器
文件頁數: 43/164頁
文件大小: 1072K
代理商: MC145574
MC145574
5–5
MOTOROLA
When SCPEN comes low again, the next eight rising edges of SCPCLK shift data in from
SCP Rx. This data is then stored in the selected byte. Figure 5–6 illustrates this process.
Figure 5–6. Serial Control Byte Register Write Operation Double 8–Bit Transaction
R/W
A1
A2
A0
D2
D1
D0
HIGH IMPEDANCE
D7
D6
D5
D4
D3
A3
SCPEN
SCPCLK
SCP Tx
SCP Rx
DONT CARE
DONT CARE
DONT CARE
Merged operations are accomplished by not taking SCPEN high between separate SCP instructions.
The SCP bytes/nibbles are strung together in a continuous bit stream and can be a mux or read/write
command. The device is able to extract the separate instructions and provide the appropriate response.
The SCPEN signal goes low at the start of the bit stream and goes high again at the end.
Figure 5–7 illustrates this process with two consecutive nibble register read operations. The merged
instructions can be a free mix of nibble/byte/read/write operations.
Figure 5–7. Merged Serial Control Port Nibble Register Read Operation
SCPEN
R/W
A1
A2
A0
D3
D2
D0
D1
HIGH IMPEDANCE
SCPCLK
SCP Tx
SCP Rx
NOTES:
1. R/W = 1 for a read operation.
2. Data is shifted out on SCP Tx on the falling edges of SCPCLK, MSB first.
3. Data is shifted into the chip from SCP Rx on the rising edges of SCPCLK, MSB first.
DONT CARE
A2
R/W
A1
D3
D2
D0
D1
DONT CARE
HIGH
IMPEDANCE
HIGH
IMPEDANCE
A0
DONT CARE
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相關PDF資料
PDF描述
MC14559BDWR2 Successive Approximation Registers
MC14559B Successive Approximation Registers
MC14559BCP Successive Approximation Registers
MC1455 Timing Circuit
MC1455BD Timing Circuit
相關代理商/技術參數
參數描述
MC145574AAC 功能描述:IC TRANSCEIVER ISDN 32-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器,接收器,收發器 系列:- 標準包裝:1,000 系列:- 類型:收發器 驅動器/接收器數:2/2 規程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC(0.295",7.50mm 寬) 供應商設備封裝:16-SOIC 包裝:帶卷 (TR)
MC145574AACR2 功能描述:IC TRANSCEIVER ISDN 32-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器,接收器,收發器 系列:- 標準包裝:1,000 系列:- 類型:收發器 驅動器/接收器數:2/2 規程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC(0.295",7.50mm 寬) 供應商設備封裝:16-SOIC 包裝:帶卷 (TR)
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MC145574ADWR2 功能描述:IC TRANSCEIVER ISDN 28-SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器,接收器,收發器 系列:- 標準包裝:1,000 系列:- 類型:收發器 驅動器/接收器數:2/2 規程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC(0.295",7.50mm 寬) 供應商設備封裝:16-SOIC 包裝:帶卷 (TR)
MC145574AEG 制造商:Freescale Semiconductor 功能描述: