Freescale Semiconductor PowerQUICC MPC885 Reference Manual page 641

Powerquicc family
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The clock signals available to each SCC and SMC in NMSI mode are shown in
USB
Rx
USB
Tx
SCC2
Rx
SCC2
Tx
SCC3
Rx
SCC3
Tx
SCC4
Rx
SCC4
Tx
SMC1
SMC2
The SCC2 in NMSI mode has its own set of modem control signals:
TXD2
RXD2
TCLK2 ← BRG1–BRG4, CLK1–CLK4
RCLK2 ← BRG1–BRG4, CLK1–CLK4
RTS2
CTS2
CD2
The SCC3 in NMSI mode has its own set of modem control signals:
TXD3
RXD3
TCLK3 ← BRG1–BRG4, CLK5–CLK8
RCLK3 ← BRG1–BRG4, CLK5–CLK8
RTS3
CTS3
CD3
Freescale Semiconductor
BRG1
RCLK1
TCLK1
RCLK2
TCLK2
RCLK3
TCLK3
RCLK4
TCLK4
SMCLK1
SCC clock source selected in SICR
SMCLK2
SMC clock source selected in SIMODE
Figure 20-28. Bank-of-Clocks Selection Logic for NMSI
MPC885 PowerQUICC Family Reference Manual, Rev. 2
BRG2
BRG3
BRG4
Bank of Clocks
Selection Logic
Serial Interface
Figure
20-28.
BRGO1
BRGO2
BRGO3
BRGO4
CLK1
CLK2
CLK3
CLK4
CLK5
CLK6
CLK7
CLK8
20-35

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