DS26401 datasheet(161/309 Pages) DALLAS

161 / 309 page

DS26401 Octal T1/E1/J1 Framer

161

RIOCR

Receive I/O Configuration Register

084h + (200h x n) : where n = 0 to 7, for Ports 1 to 8

Bit #

Name

RCLKINV

RSYNCINV

H100EN

RSCLKM

—

RSIO

RSMS2

RSMS1

Default

Bit 0 / RSYNC Mode Select 1 (RSMS1).

Selects frame or multiframe pulse when RSYNC pin is in output mode. In

input mode (elastic store must be enabled) multiframe mode is only useful when receive signaling reinsertion is

enabled.

0 = frame mode

1 = multiframe mode

Bit 1 / RSYNC Mode Select 2 (RSMS2)

T1:

RSYNC pin must be programmed in the output frame mode

0 = do not pulse double wide in signaling frames

1 = do pulse double wide in signaling frames

E1:

RSYNC pin must be programmed in the output multiframe mode

0 = RSYNC outputs CAS multiframe boundaries

1 = RSYNC outputs CRC4 multiframe boundaries

Bit 2 / RSYNC I/O Select (RSIO).

(Note: This bit must be set to zero when elastic store is disabled.)

0 = RSYNC is an output

1 = RSYNC is an input (only valid if elastic store enabled)

Bit 3 / Unused. Must be set = 0 for proper operation.

Bit 4 / RSYSCLK Mode Select (RSCLKM)

0 = if RSYSCLK is 1.544MHz

1 = if RSYSCLK is 2.048MHz or IBO enabled

Bit 5 / H.100 SYNC Mode (H100EN).

See Section 10.6.

0 = Normal operation

1 = RSYNC and TSSYNC shifted

Bit 6 / RSYNC Invert (RSYNCINV)

0 = No inversion

1 = Invert RSYNC as either input or output

Bit 7 / RCLK Invert (RCLKINV)

0 = No inversion

1 = Invert RCLK input

DS26401 Datasheet(PDF) 161 Page - Dallas Semiconductor

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