参数资料
型号: WJLXT384LEB1
厂商: CORTINA SYSTEMS INC
元件分类: 数字传输电路
英文描述: DATACOM, PCM TRANSCEIVER, PQFP144
封装: 20 X 20MM, ROHS COMPLIANT, LQFP-144
文件页数: 26/140页
文件大小: 1514K
代理商: WJLXT384LEB1
121
Document Number: 248994
Revision Number: 005
Revision Date: November 28, 2005
Intel LXT384 Octal T1/E1/J1 S/H PCM Transceiver with JA
11.3
Host Processor Mode - Serial Interface Timing
Table 71 lists serial I/O timing for a Motorola or Intel
processor in the Host Processor mode with
a serial interface.
Figure 29 is a timing diagram for serial input to the Host Processor interface.
Table 71. Serial I/O Timing Characteristics
Parameter
Sym.
Min.
Typ.1
Max.
Unit
Test
Condition
Rise/fall time any pin
Trf
100
ns
CLoad = 1.6
mA, 50 pF
SDI to SCLK setup time
Tdc
5
ns
SCLK to SDI hold time
Tcdh
5
ns
SCLK low time
Tcl
25
ns
SCLK high time
Tch
25
ns
SCLK rise and fall time
Tr, Tf
50
ns
CS falling edge to SCLK rising edge
Tcc
10
ns
Last SCLK edge to CS rising edge
Tcch
10
ns
CS inactive time
Tcwh
50
ns
SCLK to SDO valid delay time
Tcdv
5
ns
SCLK falling edge or CS rising edge to SDO high
impedance
Tcdz
10
ns
1. Typical figures are at 25 C° and are for design aid only, not guaranteed, and not subject to production
testing.
Figure 29. Serial Input Timing
tCH
tCC
tCL
tCDH
tDC
tCDH
tCCH
tCWH
CS
SCLK
SDI
LSB
MSB
CONTROL BYTE
DATA BYTE
tCH
tCC
tCL
tCDH
tDC
tCDH
tCCH
tCWH
CS
SCLK
SDI
LSB
MSB
CONTROL BYTE
DATA BYTE
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