MPC852T datasheet(48/80 Pages) FREESCALE

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MPC852T Hardware Specifications, Rev. 3.1

Freescale Semiconductor

CPM Electrical Characteristics

Table 21 provides the NMSI internal clock timing.

106

RXD3 setup time to RCLK3 rising edge

5.00

—

107

RXD3 hold time from RCLK3 rising edge 2

5.00

—

108

CD3 setup Time to RCLK3 rising edge

5.00

—

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 an external sync signal.

Table 21. NMSI Internal Clock Timing

Num

Characteristic

All Frequencies

Unit

Min

Max

100

RCLK3 and TCLK3 frequency 1

The ratios SyncCLK/RCLK3 and SyncCLK/TCLK3 must be greater or equal to 3/1.

0.00

SYNCCLK/3

MHz

102

RCLK3 and TCLK3 rise/fall time

—

103

TXD3 active delay (from TCLK3 falling edge)

0.00

30.00

104

RTS3 active/inactive delay (from TCLK3 falling edge)

0.00

30.00

105

CTS3 setup time to TCLK3 rising edge

40.00

—

106

RXD3 setup time to RCLK3 rising edge

40.00

—

107

RXD3 hold time from RCLK3 rising edge 2

Also applies to CD and CTS hold time when they are used as an external sync signals.

0.00

—

108

CD3 setup time to RCLK3 rising edge

40.00

—

Table 20. NMSI External Clock Timing (continued)

Num

Characteristic

All Frequencies

Unit

Min

Max

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