Maxim DS33R11 specifications TR.IOCR1, Configuration Register, Bit 6 Rsync Mode Select 2 RSMS2

	DS33R11 Ethernet Mapper with Integrated T1/E1/J1 Transceiver
Register Name:	TR.IOCR1
Register Description:	I/O Configuration Register 1
Register Address:	01h

Bit #

Name

Default

7	6	5	4	3	2	1	0
RSMS	RSMS2	RSMS1	RSIO	TSDW	TSM	TSIO	ODF
0	0	0	0	0	0	0	0

Bit 7: RSYNC Multiframe Skip Control (RSMS) Useful in framing format conversions from D4 to ESF. This function is not available when the receive-side elastic store is enabled. RSYNC must be set to output multiframe pulses (TR.IOCR1.5 = 1 and TR.IOCR1.4 = 0).

0 = RSYNC outputs a pulse at every multiframe

1 = RSYNC outputs a pulse at every other multiframe

Bit 6: RSYNC Mode Select 2 (RSMS2)

T1 Mode: RSYNC pin must be programmed in the output frame mode (TR.IOCR1.5 = 0, TR.IOCR1.4 = 0).

0= do not pulse double-wide in signaling frames

1= do pulse double-wide in signaling frames

E1 Mode: RSYNC pin must be programmed in the output multiframe mode (TR.IOCR1.5 = 1, TR.IOCR1.4 = 0).

0 = RSYNC outputs CAS multiframe boundaries

1 = RSYNC outputs CRC4 multiframe boundaries

Bit 5: 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. See the timing diagrams in Section 12.

0 = frame mode

1 = multiframe mode

Bit 4: RSYNC I/O Select (RSIO) (Note: This bit must be set to 0 when TR.ESCR.0 = 0.) 0 = RSYNC is an output

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

Bit 3: TSYNC Double-Wide (TSDW) (Note: This bit must be set to 0 when TR.IOCR1.2 = 1 or when TR.IOCR1.1 = 0.)

0 = do not pulse double-wide in signaling frames 1 = do pulse double-wide in signaling frames

Bit 2: TSYNC Mode Select (TSM) Selects frame or multiframe mode for the TSYNC pin. See the timing diagrams in Section 12.

0 = frame mode

1 = multiframe mode

Bit 1: TSYNC I/O Select (TSIO) 0 = TSYNC is an input

1 = TSYNC is an output

Bit 0: Output Data Format (ODF)

0 = bipolar data at TPOSO and TNEGO

1 = NRZ data at TPOSO; TNEGO = 0

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