Transmitter operating modes, Mclk pre-scaler, Ransmitter – Rainbow Electronics DS26503 User Manual
Page 28: Perating, Odes, Mclk p, Caler, Table 6-6.transmit path operating mode, Table 6-7. mclk pre-scaler for t1 mode
DS26503 T1/E1/J1 BITS Element
28 of 123
6.5 Transmitter Operating Modes
Table 6-6.Transmit Path Operating Mode
TMODE3
PIN 62
TMODE2
PIN 48
TMODE1
PIN 49
TMODE0
PIN 14
TRANSMIT PATH OPERATING MODE
0 0 0 0
T1
D4
0 0 0 1
T1
ESF
0 0 1 0
J1
D4
0 0 1 1
J1
ESF
0 1 0 0
E1
FAS
0
1
0
0
E1 FAS + CAS (Note 1)
0 1 0 1
Reserved
0 1 1 0
E1
CRC4
0
1
1
0
E1 CRC4 + CAS (Note 1)
0 1 1 1
Reserved
1
0
0
0
E1 G.703 2048kHz Synchronization Interface
1 0 0 1
Reserved
1 0 1 0
Reserved
1 0 1 1 6312kHz
Synchronization
Interface
(Note 2)
1 1 0 0
Reserved
1 1 0 1
Reserved
1 1 1 0
Reserved
1 1 1 1
Reserved
Note 1:
The DS26503 does not have an internal source for CAS signaling and multiframe alignment generation. CAS
signaling, and the multiframe alignment word, must be embedded in the transmit data (in the TS16 position) present
on the TSER pin and frame aligned to sync signal on the TS pin.
Note 2:
In addition to setting the TMODE bits to 6312kHz Synchronization Interface mode, the Transmit PLL must also be
configured to transmit a 6312kHz signal through the Transmit PLL Control Register (TPCR.6 and TPCR.7).
6.6 MCLK Pre-Scaler
Table 6-7. MCLK Pre-Scaler for T1 Mode
MPS1
PIN 16
MPS0
PIN 15
JACKS
PIN 46
MCLK
(MHz)
0 0 0
1.544
0 1 0
3.088
1 0 0
6.176
1 1 0
12.352
0 0 1
2.048
0 1 1
4.096
1 0 1
8.192
1 1 1
16.384