Serial Communication Interface (SCI) Timing
56F8322 Technical Data, Rev. 10.0
Freescale Semiconductor 119
Preliminary

Figure 10-14 Quadrature Decoder Timing

10.12 Serial Communication Interface (SCI) Timing

Figure 10-15 RXD Pulse Width

Figure 10-16 TXD Pulse Width

Table 10-21 SCI Timing1
1. Parameters listed are guarantee d by design.
Characteristic Symbol Min Max Unit See Figure
Baud Rate2
2. fMAX is the frequ ency of operation of the system clock in MHz, which is 60MHz for the 56 F8322 device and 40MHz for the
56F8122 device.
BR (fMAX/16) Mbps
RXD3 Pulse Width
3. The RXD pin in SCI0 is named RXD0 and the RXD pin in SCI1 is named RXD1.
RXDPW 0.965/BR 1.04/BR ns 10-15
TXD4 Pulse Width
4. The TXD pin in SCI0 is named TXD0 an d the TXD pin in SCI1 is named TXD1.
TXDPW 0.965/BR 1.04/BR ns 10-16
Phase B
(Input) PIN PHL
PHL
Phase A
(Input)
PIN PHL
PHL
PPH PPH PPH PPH
RXDPW
RXD
SCI receive
data pin
(Input)
TXDPW
TXD
SCI receive
data pin
(Input)