Rainbow Electronics DS21458 - Manual (Page 39)

DS21455/DS21458 Quad T1/E1/J1 Transceivers
39 of 270
5.9 Packages
The package diagrams below show the lead pattern that will be placed on the target PC board. This is the
same pattern that would be seen as viewed from the top.
Figure 5-1. DS21455 Pin Diagram, 27mm BGA
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
A RNEGI3 RFSYNC3 RLINK3 RCLKI3 DVSS ESIBS13 TCLKO3 TPOSI3 DVDD TSIG3 TSYSCLK3 RLCLK2 RLINK2 CS2 RCLKI2 RPOSO2 DVSS TCHCLK2 TSYSCLK2 DVSS
B RPOSO3 RPOSI3 DVDD RCLKO3 CS3 DVDD DVSS TCHCLK3 DVSS TCLK3 DVSS DVDD RCLK2 RPOSI2 RNEGO2 RSIG2 ESIBS12 TSSYNC2 TCLK2 TNEGO2
C RSIG3 RNEGO3 EISBRD3 DVDD TVSS TLINK3 TSYNC3 TCLKI3 TPOSO3 TSER3 TCHBLK3 DVDD EISBRD2 RCLKO2 RSIGF2 DVDD TSER2 TSIG2 TPOSO2 TPOSI2
D RSYNC3 RSIGF3 RLCLK3 RVSS RVSS TLCLK3 ESIBS03 TNEGI3 TNEGO3 TSSYNC3 TVDD RSYNC2 RNEGI2 RCHCLK2 RSER2 RMSYNC2 RFSYNC2 DVDD TCLKI2 TSYNC2
E RLOS3 RSER3 RCLK3 RVDD RLOS2 TCLKO2 TLINK2 TLCLK2
F RLCLK1 RMSYNC3 RCHCLK3 BPCLK3 RSYSCLK2 ESIBS02 TNEGI2 TCHBLK2
G RSYNC1 RLINK1 RSYSCLK3 RCHBLK3 RCHBLK2 TVSS TVDD DVDD
H RSYSCLK1 RLOS1 DVSS A5 BPCLK2 N.C. RVSS DVSS
J RCHCLK1 RSER1 DVDD EISBRD1 RVDD RVSS D1/AD1 ESIBS14
K RSIGF1 LIUC/TPD WR RFSYNC1 CS4 RLCLK4 TSSYNC4 TSER4
L RMSYNC1 RSIG1 RNEGO1 RPOSO1 A1 TCHCLK4 TSIG4 DVSS
M BPCLK1 RCHBLK1 RCLKO1 RCLKI1 DVDD RCLK4 TCLK4 DVDD
N JTDI RD RCLK1 DVDD DVSS TSYSCLK4 TPOSO4 TNEGO4
P RVDD1 BTS CS1
A7/ALE
(AS)
RNEGI4 DVDD TCLKO4 TCLKI4
R TNEGI1 RVSS RNEGI1 RPOSI1 RCLKI4 TSYNC4 TPOSI4 TNEGI4
T MCLK1 RVSS TNEGO1 A3 RCLKO4 TLCLK4 TLINK4 ESIBS04
U INT DVDD A0 D7/AD7 D5/AD5 DVSS D3/AD3 A6 D4/AD4 MUX D0/AD0 RLINK4 EISBRD4 RCHCLK4 RPOSO4 TSTRST RNEGO4 TVSS TVDD TCHBLK4
V TSYNC1 A2 TLCLK1 D6/AD6 DVDD TCLKI1 TPOSO1 A4 ESIBS11 TCHCLK1 RLOS4 RSYNC4 BPCLK4 RFSYNC4 RPOSI4 RSIGF4 N.C. JTRST JTDO RVSS
W TCHBLK1 TVDD TPOSI1 TVSS TLINK1 ESIBS01 TCLKO1 DVSS TSER1 TSIG1 TSYSCLK1 TSSYNC1 JTMS RSYSCLK4 D2/AD2 RMSYNC4 RSER4 RVDD RVSS MCLK2
Y TTIP1 TRING1 TTIP2 TRING2 TTIP3 TRING3 TTIP4 TRING4 TCLK1 RTIP1 RRING1 RCHBLK4 RTIP2 RRING2 JTCLK RTIP3 RRING3 RSIG4 RTIP4 RRING4
NOTE: Locations C3, C13, J4, and U13 are used for the Extended System Information Bus (ESIB). These pin locations
on the DS21Q352, DS21Q354, DS21Q552, and DS21Q554 are connected to ground. When replacing a
DS21Qx5y with a DS21455, these signals should be routed to control logic to gain access to the ESIB. If these
pins remain connected to ground, the ESIB function will be disabled. Pins labeled as “N.C.” must be
unconnected.