SNAA410 July   2024 CDCDB2000 , LMKDB1102 , LMKDB1104 , LMKDB1108 , LMKDB1120 , LMKDB1202 , LMKDB1204

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Introduction
  5. 2 RC19020 vs. LMKDB1120 Comparison
    1. 2.1 RC19020 vs. LMKDB1120 Pin Comparison
    2. 2.2 RC19020 vs. LMKDB1120 Exposed Registers Comparison
  6. 3 9QXL2001B vs. LMKDB1120 Comparison
    1. 3.1 9QXL2001B vs. LMKDB1120 Pin Comparison
    2. 3.2 9QXL2001B vs. LMKDB1120 Exposed Register Comparison
  7. 4 9QXL2001C vs. LMKDB1120 Comparison
    1. 4.1 9QXL2001C vs. LMKDB1120 Pin Comparison
    2. 4.2 9QXL2001C vs. LMKDB1120 Exposed Registers Comparison
  8. 5 CDCDB2000 vs. LMKDB1120 Comparison
  9. 6 RC19008 vs. LMKDB1108 Comparison
    1. 6.1 RC19008 vs. LMKDB1108 Pin Comparison
    2. 6.2 RC19008 vs. LMKDB1108 Exposed Registers Comparison
  10. 7 RC19004 vs. LMKDB1104 Comparison
    1. 7.1 RC19004 vs. LMKDB1104 Pin Comparison
    2. 7.2 RC19004 vs. LMKDB1104 Exposed Register Comparison
  11. 8 RC19204 vs. LMKDB1204 Comparison
    1. 8.1 RC19204 vs. LMKDB1204 Pin Comparison
    2. 8.2 RC19204 vs. LMKDB1204 Exposed Register Comparison
  12. 9 RC19202 vs. LMKDB1202 Comparison
    1. 9.1 RC19202 vs. LMKDB1202 Pin Comparison
    2. 9.2 RC19202 vs. LMKDB1202 Exposed Registers Comparison
  13. 10RC19002 vs. LMKDB1102 Comparison
    1. 10.1 RC19002 vs. LMKDB1102 Pin Comparison
    2. 10.2 RC19002 vs. LMKDB1102 Exposed Registers Comparison
  14. 11Summary
  15. 12References

2.1 RC19020 vs. LMKDB1120 Pin Comparison

To summarize, when replacing the RC19020 with the LMKDB1120, do not leave the vPWRGD/PWRDN# pin (M6) floating and depend on the internal pulldown resistor on the LMKDB1120. Instead, drive pin M6 low or high through external controllers, or pull pin M6 low or high through external resistors.

PIN Pin Differences between RC19020 and LMKDB1120 that Affect Drop-In Replacements Design Requirements when Replacing the RC19020 with the LMKDB1120
TI NAME RENESAS NAME NO. TYPE
Input
CLKIN_P CLKIN G1 I No differences. N/A.
CLKIN_N CLKINb H1 I
Output
CLK0_P CLK0 J1 O No difference N/A.
CLK0_N CLKb0 K1 O
CLK1_P CLK1 L1 O
CLK1_N CLKb1 M1 O
CLK2_P CLK2 M2 O
CLK2_N CLKb2 M3 O
CLK3_P CLK3 M4 O
CLK3_N CLKb3 M5 O
CLK4_P CLK4 M7 O
CLK4_N CLKb4 M8 O
CLK5_P CLK5 M9 O
CLK5_N CLKb5 M10 O
CLK6_P CLK6 M11 O
CLK6_N CLKb6 M12 O
CLK7_P CLK7 L12 O
CLK7_N CLKb7 K12 O
CLK8_P CLK8 J12 O
CLK8_N CLKb8 H12 O
CLK9_P CLK9 G12 O
CLK9_N CLKb9 F12 O
CLK10_P CLK10 D12 O
CLK10_N CLKb10 C12 O
CLK11_P CLK11 B12 O
CLK11_N CLKb11 A12 O
CLK12_P CLK12 A11 O
CLK12_N CLKb12 A10 O
CLK13_P CLK13 A9 O
CLK13_N CLKb13 A8 O
CLK14_P CLK14 A7 O
CLK14_N CLKb14 A6 O
CLK15_P CLK15 A5 O
CLK15_N CLKb15 A4 O
CLK16_P CLK16 A3 O
CLK16_N CLKb16 A2 O
CLK17_P CLK17 A1 O
CLK17_N CLKb17 B1 O
CLK18_P CLK18 C1 O No difference N/A.
CLK18_N CLKb18 D1 O
CLK19_P CLK19 E1 O
CLK19_N CLKb19 F1 O
Output Enable
vOE0#/NC NC J2 I Completing a drop-in replacement does not require any changes on these pins. These pins are NC for both the RC19020 and the LMKDB1120 and can be left floating. LMKDB1120 offers an additional active low OE function for CLK0, CLK1, CLK2, CLK3, and CLK4. These LMKDB1120 pins have internal pulldown resistors that enable the outputs by default and can be left floating. N/A.
vOE1#/NC NC K2 I
vOE2#/NC NC L3 I
vOE3#/NC NC L6 I
vOE4#/NC NC L9 I
vOE5#/SBI_IN OEb5_SBI_IN L8 I No differences
vOE6#/SBI_CLK OEb6_SBI_CLK L10 I
vOE7# OEb7 K11 I
vOE8# OEb8 H11 I
vOE9# OEb9 E12 I
vOE10#/SHFT_LD# OEb10_SHFT_LDb E11 I
vOE11# OEb11 C11 I
vOE12# OEb12 B10 I
vOE13#/NC NC B9 I Completing a drop-in replacement does not require any changes on these pins. These pins are NC for both the RC19020 and the LMKDB1120 and can be left floating. LMKDB1120 offers an additional active low OE function for CLK13, CLK14, CLK15, CLK16, CLK17, CLK18 and CLK19. These LMKDB1120 pins have internal pulldown resistors that enable the outputs by default and can be left floating.
vOE14#/NC NC B7 I
vOE15#/NC NC B5 I
vOE16#/NC NC B3 I
vOE17#/NC NC D2 I
vOE18#/NC NC D11 I
vOE19#/NC NC J11 I
Communication
SBI_OUT/NC SBI_OUT C2 O No differences. N/A.
SMB_DATA SDATA L4 I/O
SMB_CLK SCLK L5 I
vSBI_EN SBI_ENQ E2 I
^vSADR1_tr SADR_tri1 B8 I
^vSADR0_tr SADR_tri0 B4 I
Power
VDDA VDDR H2 P Completing a drop-in replacement does not require any changes on this pin. The input receiver power supply pin name is different between the RC19020 and the LMKDB1120. TI decided to follow DB2000QL’s definition for naming the input receiver power supply pin as VDDA. No changes are required. Keep the same power filtering used for the RC19020.
VDD VDDCLK B2 P No differences.
VDD VDDCLK B6 P
VDD VDDCLK B11 P
VDD VDDCLK L2 P
VDD VDDCLK L11 P
Miscellaneous
DAP EPAD GND G No differences. N/A.
LOS#/NC LOSb G11 O
NC NC F2 NC
NC NC F11 NC
NC NC G2 NC
NC NC L7 NC
vPWRGD/PWRDN# PWRGD_PWRDNb M6 I RC19020 has an internal pullup resistor while LMKDB1120 has an internal pulldown resistor. TI followed DB2000QL’s definition which states that the PWRGD/PWRDN# pin requires an internal pulldown resistor. Do not leave this pin floating and depend on the internal resistor. Drive pin low or high through external controllers, or pull pin low or high through external resistors.