Datasheet

DS21Q50
12 of 87
Table 2-2. Pin Assignment (by LQFP Pin Number)
NAME
PIN
PARALLEL PORT
ENABLED
SERIAL
PORT
ENABLED
TYPE
FUNCTION
[Serial Port Mode in Brackets]
1 TTIP4 O Transmit Analog Tip Output
2 TVSS4 — Transmit Analog Signal Ground
3 TVDD4 — Transmit Analog Positive Supply
4 TRING4 O Transmit Analog Ring Output
5 TCLK4 I Transmit Clock
6 TSER4 I Transmit Serial Data
7 TSYNC4 I/O Transmit Sync
8 DVSS4 — Digital Signal Ground
9 DVDD4 — Digital Positive Supply
10 OUTB3 O User Selectable Output B
11 OUTA3 O User Selectable Output A
12 SYSCLK3 I Transmit/Receive System Clock
13 RSER3 O Receive Serial Data
14 RSYNC3 I/O Receive Sync
15 RVSS4 — Receive Analog Signal Ground
16 RTIP3 I Receive Analog Tip Input
17 RRING3 I Receive Analog Ring Input
18 RVDD4 — Receive Analog Positive Supply
19 D0/AD0 I/O Data Bus Bit0/Address/Data Bus Bit 0
20 D1/AD1 I/O Data Bus Bit1/ Address/Data Bus Bit 1
21 D2/AD2 I/O Data Bus Bit 2/Address/Data Bus Bit2
22 D3/AD3 I/O Data Bus Bit 3/Address/Data Bus Bit 3
23 D4/AD4 I/O Data Bus Bit4/Address/Data Bus Bit 4
24 D5/AD5 I/O Data Bus Bit 5/Address/Data Bus Bit 5
25 D6/AD6 I/O Data Bus Bit 6/Address/Data Bus Bit 6
26 TTIP3 O Transmit Analog Tip Output
27 TVSS3 — Transmit Analog Signal Ground
28 TVDD3 — Transmit Analog Positive Supply
29 TRING3 O Transmit Analog Ring Output
30 TCLK3 I Transmit Clock
31 TSER3 I Transmit Serial Data
32 TSYNC3 I/O Transmit Sync
33 DVSS3 — Digital Signal Ground
34 DVDD3 — Digital Positive Supply
35 OUTB2 O User Selectable Output B
36 OUTA2 O User Selectable Output A
37 SYSCLK2 I Transmit/Receive System Clock
38 RSER2 O Receive Serial Data
39 RSYNC2 I/O Receive Sync
40 RVSS3 — Receive Analog Signal Ground
41 RTIP2 I Receive Analog Tip Input
42 RRING2 I Receive Analog Ring Input
43 RVDD3 — Receive Analog Positive Supply
44 D7/AD7 SDO I/O Data Bus Bit 7/Address/Data Bus Bit 7