MPC870 FREESCALE [Freescale Semiconductor, Inc], MPC870 Datasheet - Page 57

• Manufacturer Part Number: MPC870
• Description: Hardware Specifications
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

CPM Electrical Characteristics
13.6 SCC in NMSI Mode Electrical Specifications
Table 22
Table 23
57
1
2
1
2
The ratios SyncCLK/RCLK3 and SyncCLK/TCLK3 must be greater than or equal to 2.25/1.
Also applies to CD and CTS hold time when they are used as external sync signals.
The ratios SyncCLK/RCLK3 and SyncCLK/TCLK3 must be greater or equal to 3/1.
Also applies to CD and CTS hold time when they are used as external sync signals
Num
Num
100
101
102
103
104
105
106
107
108
100
102
103
104
105
106
107
108
provides the NMSI external clock timing.
provides the NMSI internal clock timing.
RCLK3 and TCLK3 width high
RCLK3 and TCLK3 width low
RCLK3 and TCLK3 rise/fall time
TXD3 active delay (from TCLK3 falling edge)
RTS3 active/inactive delay (from TCLK3 falling edge)
CTS3 setup time to TCLK3 rising edge
RXD3 setup time to RCLK3 rising edge
RXD3 hold time from RCLK3 rising edge
CD3 setup time to RCLK3 rising edge
RCLK3 and TCLK3 frequency
RCLK3 and TCLK3 rise/fall time
TXD3 active delay (from TCLK3 falling edge)
RTS3 active/inactive delay (from TCLK3 falling edge)
CTS3 setup time to TCLK3 rising edge
RXD3 setup time to RCLK3 rising edge
RXD3 hold time from RCLK3 rising edge
CD3 setup time to RCLK3 rising edge
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
MPC875/MPC870 Hardware Specifications, Rev. 3.0
Table 22. NMSI External Clock Timing
Table 23. NMSI Internal Clock Timing
Characteristic
1
1
Characteristic
2
2
1/SYNCCLK +5
1/SYNCCLK
All Frequencies
40.00
40.00
40.00
0.00
0.00
0.00
0.00
Min
0.00
0.00
5.00
5.00
5.00
5.00
All Frequencies
—
Min
—
Freescale Semiconductor
SYNCCLK/3 MHz
30.00
30.00
Max
—
—
—
—
—
15.00
50.00
50.00
Max
—
—
—
—
—
—
Unit
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns