10.11 Queued Serial Communication Interface (QSCI) Timing
1
Table 10-16 QSCI Timing
Characteristic
Symbol
Min
—
Max
Unit
See Figure
—
Baud Rate2
BR
(fMAX/16)
Mbps
RXD3 Pulse Width
TXD4 Pulse Width
RXDPW
TXDPW
0.965/BR
1.04/BR
1.04/BR
ns
ns
10-12
0.965/BR
10-13
LIN Slave Mode
Deviation of slave node clock from
nominal clock rate before
synchronization
FTOL_UNSYNCH
FTOL_SYNCH
TBREAK
-14
-2
14
2
%
%
—
Deviation of slave node clock relative
to the master node clock after
synchronization
—
Minimum break character length
13
11
—
—
Master
node bit
periods
—
Slavenode
bit periods
—
1. Parameters listed are guaranteed by design.
2. f is the frequency of operation of the system clock in MHz, which is 32MHz for the 56F8037/56F8027 device.
MAX
3. The RXD pin in QSCI0 is named RXD0 and the RXD pin in QSCI1 is named RXD1.
4. The TXD pin in QSCI0 is named TXD0 and the TXD pin in QSCI1 is named TXD1.
RXD
QSCI Receive
data pin
RXDPW
(Input)
Figure 10-12 RXD Pulse Width
TXD
QSCI Receive
data pin
TXDPW
(Input)
Figure 10-13 TXD Pulse Width
56F8037/56F8027 Data Sheet, Rev. 6
158
FreescaleSemiconductor
FREESCALE [ Freescale ]
