tdat04622 ETC-unknow, tdat04622 Datasheet - Page 284

• Manufacturer Part Number: tdat04622
• Description: Tdat Sonet/sdh 155/622/2488 Mbits/s Data Interfaces
• Manufacturer: ETC-unknow

TDAT042G5 SONET/SDH
155/622/2488 Mbits/s Data Interface
Interface Timing Specifications
This section specifies the interface timing requirements for the microprocessor interface, line interface, UTOPIA
interface, and SONET transport overhead (TOAC) interface.
Microprocessor Interface Timing
In all modes of the microprocessor interface, the CS may be held active continuously without affecting the function-
ality of TDAT042G5. There is no minimum time between successive microprocessor accesses to TDAT042G5, i.e.,
successive reads or writes may be back to back.
Synchronous Mode
The synchronous microprocessor interface mode is selected when MPMODE (pin D8) = 1. Interface timing for the
synchronous mode write cycle is given in Figure 38 and in Table 163 (pages 256—257), and for the read cycle in
Figure 39 and in Table 164 (pages 258—259).
256
(66 MHz MAX)
Figure 38. Microprocessor Interface Synchronous Write Cycle (MPMODE (Pin D8) = 1)
ADDR[15:0]
DATA[15:0]
MPCLK
(INPUT)
ADS
R/W
CS
DT
HIGH Z
t3
t4
t1
t1
T0
T1
t5
T2
t1
T3
T4
t6
t2
t2
t2
T5
t7
HIGH Z
Agere Systems Inc.
Data Sheet
May 2001
5-7659(F)r.2