Rainbow Electronics DS26519 - Manual (Page 140)

DS26519 16-Port T1/E1/J1 Transceiver
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Register Name:
GTCCR4
Register Description: Global Transceiver Clock Control Register 4
Register Address: 20F4h
Channels: 9 to 16
Bit
# 7 6 5 4 3 2 1 0
Name — RSYSCLKSEL TSYSCLKSEL TCLKSEL — — — —
Default 0 0 0 0 0 0 0 0
Bit 6: RSYSCLKn Select (RSYSCLKSEL)
0 = Use RSYSCLKn pins for each receive system clock (Channels 9–16).
1 = Use BPCLK21 as the master clock for all eight receive system clocks (Channels 9–16).
Bit 5: TSYSCLKn Select (TSYSCLKSEL)
0 = Use TSYSCLKn pins for each transmit system clock (Channels 9–16).
1 = Use BPCLK2 as the master clock for all eight transmit system clocks (Channels 9–16).
Bit 4: TCLKn Select (TCLKSEL)
0 = Use TCLKn pins for each of the transmit clock (Channels 9–16).
1 = Use REFCLKIO as the master clock for all eight transmit clocks (Channels 9–16).