MC145572FN Freescale Semiconductor, MC145572FN Datasheet - Page 85

• Manufacturer Part Number: MC145572FN
• Manufacturer: Freescale Semiconductor

Specifications of MC145572FN

• Number Of Line Interfaces: 1
• Control Interface: HDLC
• Package Type: PLCC
• Lead Free Status / Rohs Status: Not Compliant

MOTOROLA
5.3.2.2
PCP REGISTER R6 OPERATION
Data is written to Register R6, the eoc register, by writing two successive bytes to the PCP. The first
byte must contain the register address, write bit cleared to 0, and the most significant four bits of data
to be written, as shown in Figure 5–15.
Data is read from Register R6 by first writing a data byte containing the read/write indicator bit set
to a 1 and the register address to the PCP. The data is then read from the PCP by reading two bytes.
The first byte contains the most significant four bits of data in bits D3:D0. The next byte contains the
low order byte of data. See Figure 5–15.
R/W
CS
D0
D1
D2
D3
D4
D5
D6
D7
R6D10
R6D11
R6D8
R6D9
0
1
1
0
REGISTER R6 WRITE
Figure 5–15. PCP Register R6 Write and Read Operations
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R6D0
R6D1
R6D2
R6D3
R6D4
R6D5
R6D6
D7D6
MC145572
R6D x Register R6 Data Bit
X
CS
R/W
Don’t Care
Chip Select
Read/Write Line
KEY
0
1
1
1
X
X
X
X
REGISTER R6 READ
R6D10
R6D11
R6D8
R6D9
X
X
X
X
R6D0
R6D1
R6D2
R6D3
R6D4
R6D5
R6D6
D7D6
5–13