PRELIMINARY
PM4318 OCTLIU
DATASHEET
PMC- 2001578
ISSUE 3
OCTAL E1/T1/J1 LINE INTERFACE DEVICE
17.6 Serial PROM (SPI) Interface (Figure 40)
(T = -40°C to +85°C V
A
= 3.3V ±5%, V = 1.8V ±5%)
DD1V8
DDall33
Table 54 – SPI Interface
Symbol
Description
Min
Max
Units
SRCLK Frequency
SRCCLK Frequency
XCLK frequency ÷ 4
XCLK frequency ÷ 4
TS
SPI Input Set-Up Time to SRCLK, SRRCLK
SPI Input Set-Up Time to SRCLK, SRRCLK
SRCLK, SRRCLK to SPI Output Prop. Time
50
50
ns
ns
ns
SPI
TH
SPI
T
-50
50
P
SPI
Figure 40 – SPI Interface Timing
SRCLK
tS
tH
SPI
SPI
SREN (Slave)
SRDO
tP
SPI
SREN (Master)
SRDI
SRCCLK
tP
SPI
SRCEN
SRCDO
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
227
PMC [ PMC-SIERRA, INC ]
