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参数资料
| 型号： | DS26334G |
| 英文描述： | 3.3V, 16-Channel, E1/T1/J1 Short and Long-Haul Line Interface Unit |
| 中文描述： | 3.3伏，16路，E1/T1/J1短，长途线路接口单元 |
| 文件页数： | 18/115页 |
| 文件大小： | 756K |
| 代理商： | DS26334G |
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DS26334 3.3V, 16-Channel, E1/T1/J1 Short/Long-Haul Line Interface Unit
18 of 115
5 FUNCTIONAL DESCRIPTION
5.1 Port Operation
5.1.1 Serial Port Operation
Setting MODESEL = ‘low’ enables the serial bus interface on the DS26334. Port read/write timing is unrelated to
the system transmit and receive timing, allowing asynchronous reads or writes by the host. See Section
9.3
for the
AC timing of the serial port. All serial port accesses are LSB first when BSWP pin is high and MSB first when
BSWP is low.
Figure 5-1
to
Figure 5-3
show operation with LSB first.
This port is compatible with the SPI interface defined for Motorola Processors. An example of this is the MMC2107
from Motorola.
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 6 bits identify the register address (A1 to A6) (A7 is 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 5-1. 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
A
6
x
(adrs
msb)
SDI
SDO
D1
D2
D3
D4
D5
D7
(lsb)
(msb)
DO
D6
(lsb)
WRITE ACCESS ENABLED
Figure 5-2. 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
相关PDF资料 |
PDF描述 |
|---|---|
| DS26334GN | 3.3V, 16-Channel, E1/T1/J1 Short and Long-Haul Line Interface Unit |
| DS26503 | T1/E1/J1 BITS Element |
| DS26503L | T1/E1/J1 BITS Element |
| DS26503LN | T1/E1/J1 BITS Element |
| DS26503 | T1/E1/J1/64KCC BITS Element |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS26334G+ | 功能描述:电信集成电路 3.3V E1/T1/J1 16Ch Short/Long Haul LIU RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
| DS26334GA2 | 功能描述:电信集成电路 RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
| DS26334GA2+ | 功能描述:电信集成电路 RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
| DS26334GA3 | 功能描述:电信集成电路 3.3V E1/T1/J1 16Ch Short/Long Haul LIU RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
| DS26334GA3+ | 功能描述:电信集成电路 3.3V E1/T1/J1 16Ch Short/Long Haul LIU RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
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