Table 8.3 Serdes Transmit Driver Settings In Gen2 Mode With -3.5Db De-Emphasis - Renesas IDT 89HPES48H12G2 User Manual

IDT SerDes
Notes
PES48H12G2 User Manual
Transmit Levels
De-
De-
Drive emphas
emphas
Level ized
is
Level
898 -3.5 603
891 -3.5 596
884 -3.5 589
878 -3.6 581
871 -3.6 574
854 -3.6 562
837 -3.7 549
819 -3.7 537
802 -3.7 525
777 -3.7 509
752 -3.7 494
727 -3.6 478
702 -3.6 463
672 -3.6 446
641 -3.5 428
610 -3.4 411
579 -3.4 393
546 -3.4 370
512 -3.4 346
479 -3.4 323
445 -3.4 300
406 -3.4 274
367 -3.4 248
328 -3.4 222
289 -3.4 196
246 -3.5 166
203 -3.5 136
160 -3.6 107
118 -3.7 77

Table 8.3 SerDes Transmit Driver Settings in Gen2 Mode with -3.5dB de-emphasis

1.
Table values are based on simulations using the Snowbush SerDes HSPICE model and device package s-
parameters. Values are sampled at the device pins. The simulation assumes typical conditions, with VddPEA =
VddPETA = 1.0V, VddPEHA = 2.5V, and TX_AMPBOOST = 0x1. Please refer to the device data sheet for post-
silicon device characterization data.
8 - 7
Settings of Relevant Fields in the S[x]TXLCTL0 &
S[x]TXLCTL1 registers
TDVL_ TX_EQ_ CDC_
FS3DBG2 3DBG2 FS3DBG2
0x1C 0x1
0x1B 0x1
0x1A 0x1
0x19 0x1
0x18 0x1
0x17 0x1
0x16 0x1
0x15 0x1
0x14 0x1
0x13 0x1
0x12 0x1
0x11 0x1
0x10 0x1
0x0F 0x1
0x0E 0x1
0x0D 0x1
0x0C 0x1
0x0B 0x1
0x0A 0x1
0x09 0x1
0x08 0x1
0x07 0x1
0x06 0x1
0x05 0x1
0x04 0x1
0x03 0x1
0x02 0x1
0x01 0x1
0x00 0x1
FDC_ TX_SLEW
FS3DBG2 _G2
0x1 0x3 0x0
0x1 0x4 0x0
0x1 0x4 0x0
0x1 0x4 0x0
0x1 0x4 0x0
0x1 0x4 0x0
0x1 0x4 0x0
0x1 0x4 0x0
0x1 0x4 0x0
0x1 0x3 0x0
0x1 0x3 0x0
0x1 0x3 0x0
0x1 0x3 0x0
0x1 0x1 0x0
0x1 0x1 0x0
0x1 0x1 0x0
0x1 0x1 0x0
0x1 0x0 0x0
0x1 0x0 0x0
0x1 0x0 0x0
0x1 0x0 0x0
0x0 0x7 0x0
0x0 0x7 0x0
0x0 0x7 0x0
0x0 0x7 0x0
0x0 0x5 0x0
0x0 0x5 0x0
0x0 0x5 0x0
0x0 0x5 0x0
April 5, 2013