SXT6051 Functional Timing
FUNCTIONAL TIMING
Transmit Frame Parallel Timing
Figure 12:Transmit Frame Reference Timing Parallel Interface
MHBC LKI
Input parallel clock
for transmit frame
(6.48 MHz
19.44 M Hz
/
STM-0 or
STM-1
Every fram e
/
)
MFRM I
External input frame reference
for transmit frame (8 KHz)
MHBC LKO
Output Parallel Clock
(Transmit Frame)
MHBD ATA (STM -0)
Output parallel data
(Transmit Frame)
A1
A2
J0
Data
Data
Data
Data
Data
Data
Data
Data
Data
MFRM O (STM -0)
Output Frame Reference
(Transmit Frame)
Every fram e
MHBD ATA (STM -1)
A1
A2
A2
A2
J0
NU1_8 NU1-9
Data
Data
Data
Data
Data
Data
Data
Output data
(
Transmit Frame)
MFRM O (STM -1)
Every fram e
Output Frame Reference
(
Transmit Frame)
Note :
a. MFRM I input cannot be used in repeater m ode or in 1+1 protection "slave" configuration.
(has to be tied to ground or VCC)
b. MFRM I input can be tied to ground if there is no need to synchronize the transm it fram e with an
external reference. The transm it fram e reference is then dependent to the chip reset.
43
LevelOne [ LEVEL ONE ]
