7733 datasheet(583/940 Pages) RENESAS

tên linh kiện	7733

Giải thích chi tiết về linh kiện	16-BIT SINGLE-CHIP MICROCOMPUTER

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APPENDIX

7733 Group User’s Manual

21-35

Appendix 3. Control registers

Serial transmit control register

Bit

Bit name

At reset

Functions

Serial transmit control register (address 6E16)

g When using multiple transfer clock output pins, satisfy the following conditions:

q Serial I/O mode selection bits (bits 2 to 0 at address 3016) = “0012”

q Internal/external clock selection bit (bit 3 at address 3016) = “0”

q CTS/RTS enable bit (bit 4 at address 3416) = “1”

q Receive enable bit (bit 2 at address 3516) = “0” (for cases and in Table 8.3.4)

q Transmission clock output pin selection bits = “012”, “102”, or “112” (Refer to Table 8.3.3.)

Note: Bits 4 and 5 are ignored in the UART mode. (They may be “0” or “1.”)

Not implemented.

Un-

defined

Transmission clock output pin

selection bits

(Valid only in the clock synchronous

serial I/O mode.) (Note)

0 0: One transfer clock output pin

(CLK0)

0 1:

1 0:

1 1:

3 to 0

7, 6

Not implemented.

Value “0” is read out from here.

b5 b4

Multiple transfer clock

output pins

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