Renesas Stereo System SH7709S User Manual

Rev. 5.00, 09/03, page 574 of 760

Bit:

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

PE7

MD1

PE7

MD0

PE6

MD1

PE6

MD0

PE5

MD1

PE5

MD0

PE4

MD1

PE4

MD0

PE3

MD1

PE3

MD0

PE2

MD1

PE2

MD0

PE1

MD1

PE1

MD0

PE0

MD1

PE0

MD0

Initial  value:

1/0

0

1

0

1

0

1

0

1

0

1

0

1

0

1/0

0

R/W: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W

The port E control register (PECR) is a 16-bit readable/writable register that selects the pin
functions. PECR is initialized to H'AAAA (

ASEMD0 = 1) or H'2AA8 (ASEMD0 = 0) by a

power-on reset, but is not initialized by a manual reset, in software standby mode, or in sleep
mode.

Bits 15 and 14—PE7 Mode 1 and 0 (PE7MD1, PE7MD0)
Bits 13 and 12—PE6 Mode 1 and 0 (PE6MD1, PE6MD0)
Bits 11 and 10—PE5 Mode 1 and 0 (PE5MD1, PE5MD0)
Bits 9 and 8—PE4 Mode 1 and 0 (PE4MD1, PE4MD0)
Bits 7 and 6—PE3 Mode 1 and 0 (PE3MD1, PE3MD0)
Bits 5 and 4—PE2 Mode 1 and 0 (PE2MD1, PE2MD0)
Bits 3 and 2—PE1 Mode 1 and 0 (PE1MD1, PE1MD0)
Bits 1 and 0—PE0 Mode 1 and 0 (PE0MD1, PE0MD0)
These bits select the pin functions and perform input pull-up MOS control.

0

0

Reserved (n = 0, 7) (see table 18.1)

(Initial value) (

ASEMD0

 = 0)

0

1

Port output

1

0

Port input (Pull-up MOS: on)

(Initial value) (

ASEMD0

 = 1)

1

1

Port input (Pull-up MOS: off)

(n = 0, 7)

0

0

Other function (n = 2, 4, 5) (see table 18.1), Reserved (n = 1, 3, 6)

0

1

Port output

1

0

Port input (Pull-up MOS: on)

(Initial value)

1

1

Port input (Pull-up MOS: off)

(n = 1 to 6)