BCM4339 Preliminary Data Sheet
SDIO/gSPI Timing
Device Input Timing
Figure 46: SDIO Bus Input Timing (SDR Modes)
SDIO_CLK
tIS
tIH
CMD input
DAT[3:0] input
Table 55: SDIO Bus Input Timing Parameters (SDR Modes)
Symbol
Minimum
Maximum
Unit
Comments
SDR104 Mode
tIS
tIH
1.4
0.8
–
–
ns
ns
CCARD = 10 pF, VCT = 0.975V
CCARD = 5 pF, VCT = 0.975V
SDR50 Mode
tIS
tIH
3.0
0.8
–
–
ns
ns
CCARD = 10 pF, VCT = 0.975V
CCARD = 5 pF, VCT = 0.975V
SDR25 Mode
tIS
tIH
3.0
0.8
–
–
ns
ns
CCARD = 10 pF, VCT = 0.975V
CCARD = 5 pF, VCT = 0.975V
SDR12 Mode
tIS
tIH
3.0
0.8
–
–
ns
ns
CCARD = 10 pF, VCT = 0.975V
CCARD = 5 pF, VCT = 0.975V
Broadcom®
November 17, 2014 • 4339-DS106-R
Page 163
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