SLASEA6D February 2017 – June 2020
PRODUCTION DATA.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
1 | 0 | 0 | 0 | 0 | 0 | 0 | x |
R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W |
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 |
R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W |
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset |
Bit | Field | Type | Reset | Description |
---|---|---|---|---|
15 | CLK_TX_IDLE | R/W | 1 | When high puts the CLK_TX circuitry in idle mode during which the CLKTX+ and CLKTX- output pins are driven to the proper common-mode levels in order to charge the external AC coupling caps. When low allows the divided clock to be driven onto the CLKTX+ and CLKTX- output pins. |
14:13 | CLK_TX_DIVSELECT | R/W | 01 | Selects either div2, div3 or div 4 output.
00 = divided by 3 01 = divided by 4 10 = divided by 2 11 = not valid |
12 | Reserved | R/W | 0 | Reserved |
11:8 | CLK_TX_SWING | R/W | 0x0 | Sets desired swing on CLKTX+ and CLKTX- outputs in mVpp-diff
0x0 125 0x1 232 0x2 337 0x3 440 0x4 540 0x5 639 0x6 736 0x7 831 0x8 924 0x9 1012 0xA 1097 0xB 1178 0xC 1255 0xD 1329 0xE 1398 0xF 1462 |
7:3 | Reserved | R/W | 00000 | Reserved |
2 | CLK_TX_FLIP | R/W | 0 | Flips the polarity of CLKTX |
1 | TX_SYNC_ENA | R/W | 1 | Syncs the CLKTX with SYSREF when asserted |
0 | EXTREF_ENA | R/W | 0 | Allows the chip to use an external refernce(1) or the internal reference(0) |