参数资料
型号: DS26334
英文描述: 3.3V, 16-Channel, E1/T1/J1 Short and Long-Haul Line Interface Unit
中文描述: 3.3V、16路、E1/T1/J1短/长程线路接口单元
文件页数: 18/115页
文件大小: 756K
代理商: DS26334
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
DS26334G 3.3V, 16-Channel, E1/T1/J1 Short and Long-Haul Line Interface Unit
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
相关代理商/技术参数
参数描述
DS26334_07 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:3.3V, 16-Channel, E1/T1/J1 Shortand Long-Haul Line Interface Unit
DS26334DK 功能描述:网络开发工具 DS26334 Dev Kit RoHS:否 制造商:Rabbit Semiconductor 产品:Development Kits 类型:Ethernet to Wi-Fi Bridges 工具用于评估:RCM6600W 数据速率:20 Mbps, 40 Mbps 接口类型:802.11 b/g, Ethernet 工作电源电压:3.3 V
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
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