Freescale Semiconductor PowerQUICC MPC885 Reference Manual page 608

Serial Interface
Figure 20-1 shows the SI block diagram.
Route
SI RAM
TDM a&b
Strobes
20.1 SI Features
The SI consists of two main sections, the TSA and the NMSI. The TSA's main features are as follows:
• QUICC Multichannel Controller (QMC) see the Supplement, QUICC™ Multichannel Controller
— Up to 64 independent communication channels
— Arbitrary mapping of any of 0–63 channels to any of 0–63 TDM time slots
20-2
Tx / Rx
RAM
Control
SMC1
MUX
Time-Slot
Assigner
TDM a&b SMC1
Pins
Pins
Figure 20-1. MPC885 SI Block Diagram
MPC885 PowerQUICC Family Reference Manual, Rev. 2
U-Bus
Mode Command
Register Register
SMC2
SCC2
MUX
MUX
SMC2
Pins
Non-multiplexed Serial Interface (NMSI)
Status Clock
Register Route
SCC3 SCC4
MUX MUX
SCC2 SCC3 SCC4
Pins Pins Pins
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