C167CS datasheet(156/517 Pages) INFINEON

156 / 517 page

C167CS

Derivatives

Parallel Ports

User’s Manual

7-29

V2.0, 2000-07

Note: Due to pin limitations register bit P3.14 is not connected to an IO pin.

Pins P3.15 and P3.12 do not support open drain mode.

Alternate Functions of Port 3

The pins of Port 3 serve for various functions which include external timer control lines,

the two serial interfaces, and the control lines BHE/WRH and clock output.

Table 7-5 summarizes the alternate functions of Port 3.

ODP3

P3 Open Drain Ctrl. Reg.

ESFR (F1C6H/E3H)

Reset Value: 0000H

98765

43210

ODP

3.13

ODP

3.11

ODP

3.10

ODP

3.9

ODP

3.8

ODP

3.7

ODP

3.6

ODP

3.5

ODP

3.4

ODP

3.3

ODP

3.2

ODP

3.1

ODP

3.0

Bit

Function

ODP3.y

Port 3 Open Drain control register bit y

ODP3.y = 0: Port line P3.y output driver in push/pull mode

ODP3.y = 1: Port line P3.y output driver in open drain mode

Table 7-5

Alternate Functions of Port 3

Port 3 Pin

Alternate Function

P3.0

P3.1

P3.2

P3.3

P3.4

P3.5

P3.6

P3.7

P3.8

P3.9

P3.10

P3.11

P3.12

P3.13

–

P3.15

T0IN

CAPCOM1 Timer T0 Count Input

T6OUT

GPT2 Timer T6 Toggle Latch Output

CAPIN

GPT2 Capture Input

T3OUT

GPT1 Timer T3 Toggle Latch Output

T3EUD

GPT1 Timer T3 External Up/Down Input

T4IN

GPT1 Timer T4 Count Input

T3IN

GPT1 Timer T3 Count Input

T2IN

GPT1 Timer T2 Count Input

MRST

SSC Master Receive/Slave Transmit

MTSR

SSC Master Transmit/Slave Receive

TxD0

ASC0 Transmit Data Output

RxD0

ASC0 Receive Data Input

BHE/WRH

Byte High Enable/Write High Output

SCLK

SSC Shift Clock Input/Output

–

CLKOUT/

System Clock Output/

FOUT

Programmable Frequency Output

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