Datasheet

DS21352/DS21552
11 of 137
4. PIN DESCRIPTION
Table 4-1 PIN DESCRIPTION SORTED BY PIN NUMBER
PIN SYMBOL TYPE DESCRIPTION
1 RCHBLK O Receive Channel Block
2 JTMS I IEEE 1149.1 Test Mode Select
3 8MCLK O 8.192 MHz Clock
4 JTCLK I IEEE 1149.1 Test Clock Signal
5 JTRST I IEEE 1149.1 Test Reset
6 RCL O Receive Carrier Loss
7 JTDI I IEEE 1149.1 Test Data Input
8 NC – No Connect
9 NC – No Connect
10 JTDO O IEEE 1149.1 Test Data Output
11 BTS I Bus Type Select
12 LIUC I Line Interface Connect
13 8XCLK O Eight Times Clock
14 TEST I Test
15 NC – No Connect
16 RTIP I Receive Analog Tip Input
17 RRING I Receive Analog Ring Input
18 RVDD – Receive Analog Positive Supply
19 RVSS – Receive Analog Signal Ground
20 RVSS – Receive Analog Signal Ground
21 MCLK I Master Clock Input
22 XTALD O Quartz Crystal Driver
23 NC – No Connect
24 RVSS – Receive Analog Signal Ground
25 INT* O Interrupt
26 NC – No Connect
27 NC – No Connect
28 NC – No Connect
29 TTIP O Transmit Analog Tip Output
30 TVSS – Transmit Analog Signal Ground
31 TVDD – Transmit Analog Positive Supply
32 TRING O Transmit Analog Ring Output
33 TCHBLK O Transmit Channel Block
34 TLCLK O Transmit Link Clock
35 TLINK I Transmit Link Data
36 CI I Carry In
37 TSYNC I/O Transmit Sync
38 TPOSI I Transmit Positive Data Input
39 TNEGI I Transmit Negative Data Input
40 TCLKI I Transmit Clock Input
41 TCLKO O Transmit Clock Output
42 TNEGO O Transmit Negative Data Output
43 TPOSO O Transmit Positive Data Output
Table 4-1 PIN DESCRIPTION SORTED BY PIN NUMBER (cont.)
PIN SYMBOL TYPE DESCRIPTION
44 DVDD – Digital Positive Supply
45 DVSS – Digital Signal Ground
46 TCLK I Transmit Clock
47 TSER I Transmit Serial Data
48 TSIG I Transmit Signaling Input
49 TESO O Transmit Elastic Store Output