參數(shù)資料
型號(hào)： DS26303G-75
廠商： Maxim Integrated Products, Inc.
英文描述： 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
中文描述： 3.3，E1/T1/J1，短途，八線路接口單元
文件頁(yè)數(shù)： 22/97頁(yè)
文件大小： 966K
代理商： DS26303G-75
DS26303: 3.3V, T1/E1/J1, Short-Haul, Octal Line Interface Unit
22 of 97
4.1.2 Serial Port Operation
Setting MODESEL = VDDIO/2 enables the serial bus interface on the DS26303. Port read/write timing is unrelated
to the system transmit and receive timing, allowing asynchronous reads or writes by the host. See Section
10.3
for
the AC timing of the serial port. All serial port accesses are LSB first when BSWP pin is low and MSB first when
BSWP is high.
Figure 4-3
to
Figure 4-5
show operation with LSB first.
This port is compatible with the SPI interface defined for Motorola processors. An example of this is Motorola’s
MMC2107.
Reading or writing to the internal registers requires writing one address/command byte prior to transferring register
data. The first bit written (LSB) of the address/command byte specifies whether the access is a read (1) or a write
(0). The next 5 bits identify the register address (A1 to A5; A6 and A7 are ignored).
All data transfers are initiated by driving the CSB input low. When CLKE is low, SDO data is output on the rising
edge of SCLK and when CLKE is high, data is output on the falling edge of SCLK. Data is held until the next falling
or rising edge. All data transfers are terminated if CSB input transitions high. Port control logic is disabled and SDO
is tri-stated when CSB is high. SDI is always sampled on the rising edge of SCLK.
Figure 4-3. Serial Port Operation for Write Access
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SCLK
CSB
0
A1
A2
A3
A4
A5
A6
X
(msb)
SDI
SDO
D1
D2
D3
D4
D5
D7
(lsb)
(msb)
DO
D6
(lsb)
WRITE ACCESS ENABLED
Figure 4-4. Serial Port Operation for Read Access with CLKE = 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
0
A1
A2
A3
A4
A5
D1
D2
D3
D4
D5
D6
SCLK
SDI
SDO
CSB
(lsb)
(msb)
D0
(lsb)
D7
(msb)
A6
X
Read
Access
Enabled
相關(guān)PDF資料
PDF描述
DS26303GN-120 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
DS26303GN-75 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
DS26303L-120 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
DS26303L-75 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
DS26303LN-120 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS26303GN-120 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
DS26303GN-75 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
DS26303L-120 功能描述:電信線路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
DS26303L-120+ 功能描述:電信線路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
DS26303L-120+A3 功能描述:電信線路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
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